From akrherz at iastate.edu  Fri Apr  1 11:00:34 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Fri, 1 Apr 2011 11:00:34 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104011600.p31G0YZW006285@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 01 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-31
 | Title : A calm day for late March
 | Date  : 31 Mar 05:51 AM
 | Votes : Good: 14   Bad: 3
 +----------------------------------------------

Yesterday was a remarkably calm day for late March with the peak wind 
speed reported at the Des Moines Airport (based on the hourly obs) of a 
mere 8 mph.  The featured chart presents the maximum reported wind 
speed for each March 30th going back to the late 1940s.  This year's 
value is the lowest to be found on the chart.  March will end with 
another mostly calm day with a chance of rain.  Blustery weather 
arrives on Saturday!

> NWS Watch/Warning Summary for 31 Mar 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      16    0 |   0     0     0     0     0 |   2
Svr Tstorm   29    0 |   0     0     0     0     0 |   0
Fl Flood      1    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 45 Verified: 16  [35.6 %]
Reduction of Size Versus County Based     [68.0 %]
Average Perimeter Ratio                   [1.6 %]
Percentage of Warned Area Verified (15km) [12.5 %]
Average Storm Based Warning Size          [1801 sq km]
Probability of Detection(higher is better)[0.86]
False Alarm Ratio (lower is better)       [0.64]
Critical Success Index (higher is better) [0.34]

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From akrherz at iastate.edu  Sat Apr  2 11:00:27 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sat, 2 Apr 2011 11:00:27 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104021600.p32G0Rpd006184@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 02 April 2011

> News

 +----------------------------------------------
 | Title : Storm Based Warning Talk
 | Date  : 02 Apr 08:15 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/present/110401_nwa/
 +----------------------------------------------

<p>At the referenced URL, you will find the powerpoint I presented to 
the Central Iowa National Weather Association severe storms conference. 
The topic was looking into the National Weather Service's use of Storm 
Based Warnings.

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-01
 | Title : three months down, nine to go
 | Date  : 01 Apr 05:54 AM
 | Votes : Good: 8   Bad: 3
 +----------------------------------------------

The featured chart presents the yearly number of SPC issued watches 
before and after 1 April.  This year has seen about twice as many 
watches to this date than last year, but only half the total of 2008 
and one of the smaller totals since 1997.  The largest total of watches 
on this chart (2003) started off with a near average total prior to 1 
April.  Chances of severe weather arrive in Iowa on Sunday and 
hopefully some warmer weather as well.

> NWS Watch/Warning Summary for 01 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    2    0 |   0     0     0     0     0 |   0
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 2 Verified: 2  [100.0 %]
Reduction of Size Versus County Based     [58.0 %]
Average Perimeter Ratio                   [35.0 %]
Percentage of Warned Area Verified (15km) [52.6 %]
Average Storm Based Warning Size          [914 sq km]
Probability of Detection(higher is better)[0.67]
False Alarm Ratio (lower is better)       [0.00]
Critical Success Index (higher is better) [0.67]

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From akrherz at iastate.edu  Sun Apr  3 11:00:12 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sun, 3 Apr 2011 11:00:12 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104031600.p33G0C97005742@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 03 April 2011

> News

    No news is good news

> Daily Feature

    No feature posted

> NWS Watch/Warning Summary for 02 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    1    0 |   0     0     0     0     0 |   0
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 1 Verified: 1  [100.0 %]
Reduction of Size Versus County Based     [79.8 %]
Average Perimeter Ratio                   [25.1 %]
Percentage of Warned Area Verified (15km) [52.0 %]
Average Storm Based Warning Size          [903 sq km]
Probability of Detection(higher is better)[0.50]
False Alarm Ratio (lower is better)       [0.00]
Critical Success Index (higher is better) [0.50]

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From akrherz at iastate.edu  Mon Apr  4 11:02:13 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Mon, 4 Apr 2011 11:02:13 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104041602.p34G2DDM022290@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 04 April 2011

> News

 +----------------------------------------------
 | Title : New Webcam: Anamosa RWIS
 | Date  : 04 Apr 09:11 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/RWIS/?camid=IDOT-052
 +----------------------------------------------

<p>Another Iowa DOT RWIS site has been outfitted with a web camera 
providing eight directional shots every 10 minutes or so.  This is at 
the RWIS site near Anamosa along US Highway 151.


 +----------------------------------------------
 | Title : 3 April Record Highs
 | Date  : 04 Apr 07:57 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/
 +----------------------------------------------

<p>Temperatures rocketed into the 80s on Sunday setting record high 
temperatures over parts of the Midwest.  Here is a summary of new 
records as relayed by the National Weather Service for sites in and 
near Iowa.

<p>
<table cellspacing="0" cellpadding="2" border="1">
<tr><th>Location</th><th>3 Apr 2011 High</th><th>Previous Record</th>
<th>Year</th></tr>

<tr><td>Burlington</td><td>85</td><td>83</td><td>1978</td></tr>
<tr><td>Cedar Rapids</td><td>80</td><td>80</td><td>1929</td></tr>
<tr><td>Des Moines</td><td>87</td><td>82</td><td>1978, 1889</td></tr>
<tr><td>Lamoni</td><td>87</td><td>81</td><td>2003</td></tr>
<tr><td>Lincoln, IL</td><td>83</td><td>81</td><td>1956</td></tr>
<tr><td>Moline, IL</td><td>83</td><td>80</td><td>1996</td></tr>
<tr><td>Ottumwa</td><td>86</td><td>82</td><td>1978</td></tr>
<tr><td>Peoria, IL</td><td>84</td><td>82</td><td>1978</td></tr>
<tr><td>Springfield, IL</td><td>86</td><td>83</td><td>1981</td></tr>
<tr><td>Topeka, KS</td><td>92</td><td>85</td><td>1893</td></tr>

</table>

> Daily Feature

    No feature posted

> NWS Watch/Warning Summary for 03 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       1    0 |   0     0     0     0     0 |   1
Svr Tstorm  109   11 |   4    13     5     1     0 |   4
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 111 Verified: 74  [66.7 %]
Reduction of Size Versus County Based     [59.0 %]
Average Perimeter Ratio                   [20.5 %]
Percentage of Warned Area Verified (15km) [27.5 %]
Average Storm Based Warning Size          [2203 sq km]
Probability of Detection(higher is better)[0.92]
False Alarm Ratio (lower is better)       [0.33]
Critical Success Index (higher is better) [0.63]

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From akrherz at iastate.edu  Tue Apr  5 11:02:50 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Tue, 5 Apr 2011 11:02:50 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104051602.p35G2oeZ008045@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 05 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-04
 | Title : Temps cut in half
 | Date  : 04 Apr 06:06 AM
 | Votes : Good: 11   Bad: 3
 +----------------------------------------------

Temperatures have been cut in half from highs on Sunday in the 80s for 
many in Iowa to current temperatures in the lower 40s this Monday 
morning. This strong temperature gradient is helping to drive a strong 
line of thunderstorms south today with more severe weather expected 
over the deep south.  Our temperatures are expected to recover tomorrow 
with highs back in ths 60s.

> NWS Watch/Warning Summary for 04 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      84    0 |   0     0     0     0     0 |   8
Svr Tstorm  383    0 |   0     0     0     0     0 |   6
Fl Flood     16    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 471 Verified: 253  [53.7 %]
Reduction of Size Versus County Based     [51.9 %]
Average Perimeter Ratio                   [14.1 %]
Percentage of Warned Area Verified (15km) [20.0 %]
Average Storm Based Warning Size          [2811 sq km]
Probability of Detection(higher is better)[0.84]
False Alarm Ratio (lower is better)       [0.46]
Critical Success Index (higher is better) [0.49]

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From akrherz at iastate.edu  Wed Apr  6 11:01:17 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Wed, 6 Apr 2011 11:01:17 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104061601.p36G1Hhr018762@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 06 April 2011

> News

 +----------------------------------------------
 | Title : July COOP data uploaded
 | Date  : 06 Apr 08:59 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/climodat/
 +----------------------------------------------

<p>The quality controlled Iowa COOP data for July 2010 has been 
uploaded to the IEM. These observations are kindly provided by Harry 
Hillaker, our state climatologist, who passes along these notes on the 
month:

<p><blockquote>
Temperatures averaged 74.7 degrees or 0.9 degrees above normal while 
precipitation averaged 8.11 inches or 3.8 inches more than normal.   
This ranks as the 55th warmest and 5th wettest July among 138 years of 
records.   The last warmer July was in 2006 and the last wetter July 
in 1993.   Monthly precipitation totals varied from 3.86 inches at 
Bedford to 20.33 inches at Oelwein.   Only 6 of 134 locations recorded 
less than normal precipitation, most of which were in southwestern 
Iowa.
</blockquote>

<p>The following is the number of new daily records set at COOP sites 
based on data back to 1951.

<p><pre>
                 ________2010 _________________2009_________
                 JUL  JUN  MAY  APR  MAR  FEB  JAN  DEC  NOV
Maximum High:      0    0   61   69    3    0    0    0    2
Minimum High:      0    5   45    6    0    6   97   24    0
Maximum Low:      19    2  112   42    7    0   18    3   74
Minimum Low:       0    0   13    1    0   38  131   41    0
Maximum Precip:  160  126   52   38   30   25  151  193   45
</pre>

<p>The following is some bulk statistics on how well IEM's daily COOP 
data estimator is performing on a monthly basis versus this QC'd 
dataset. No code changes were made.

<p><pre>
                 _____2010_________________________2009______
                 JUL   JUN   MAY   APR   MAR   FEB   JAN   DEC 
High Temp Bias   0.9   0.6   1.1   0.5   1.9   1.4   1.3   0.8 
High Temp RMSE   1.4   1.1   1.4   1.1   2.2   1.7   1.6   1.1 
Low  Temp Bias   1.2   0.8   1.2   1.6   2.5   2.0   1.9   1.3 
Low  Temp RMSE   1.5   1.3   1.6   2.0   2.7   2.4   2.1   1.7 
Precip    Bias  -1.28 -0.05 -0.64 -0.18 -0.37 -0.61 -0.47 -1.41 
Precip    RMSE   1.60  1.63  0.81  0.56  0.44  0.61  0.50  1.44 
</pre>

<p>The Climodat reports referenced from this news item are summaries 
of this daily data.

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-05
 | Title : Day to Day Changes
 | Date  : 05 Apr 06:22 AM
 | Votes : Good: 8   Bad: 4
 +----------------------------------------------

The high temperature on Monday was 30 degrees colder than the high on 
Sunday of 82.  The featured image presents the extreme day to day high 
temperature changes based on data for Ames.  A 30 degree negative 
change is near the maximum experienced for early April.  The chart 
nicely shows the annual cycle with a minimum in temperature swings 
during the summer.

> NWS Watch/Warning Summary for 05 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      22    0 |   0     0     0     0     0 |   3
Svr Tstorm  149    0 |   0     0     0     0     0 |   2
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 142 Verified: 102  [71.8 %]
Reduction of Size Versus County Based     [45.6 %]
Average Perimeter Ratio                   [4.5 %]
Percentage of Warned Area Verified (15km) [25.5 %]
Average Storm Based Warning Size          [4165 sq km]
Probability of Detection(higher is better)[0.79]
False Alarm Ratio (lower is better)       [0.28]
Critical Success Index (higher is better) [0.61]

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From akrherz at iastate.edu  Thu Apr  7 11:00:13 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Thu, 7 Apr 2011 11:00:13 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104071600.p37G0Dgk014737@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 07 April 2011

> News

 +----------------------------------------------
 | Title : March AWOS Data Uploaded
 | Date  : 06 Apr 01:08 PM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/request/awos/1min.php
 +----------------------------------------------

<p>The one minute interval Iowa AWOS data for March 2011 has been 
uploaded to the IEM.  This information is kindly provided by the Iowa 
Department of Transportation, Aviation Division.

<p><strong>Important Note:</strong> The DOT is changing the way AWOS 
data is relayed and one minute interval data will no longer be archived 
for sites in Iowa.  The good news is that real-time data at five minute 
intervals will be available.  

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-06
 | Title : 40 degree warm ups are nice
 | Date  : 06 Apr 05:52 AM
 | Votes : Good: 11   Bad: 6
 +----------------------------------------------

The featured chart presents the difference between the afternoon high 
temperature and the morning low temperature for Ames since the first of 
the year.  On Tuesday, temperatures warmed 40 degrees and made for the 
second time this year for such a strong warm up.  Low temperatures this 
morning are starting off much warmer than yesterday, so temperatures 
will not have to warm as much to get us back into the 60s today.

> NWS Watch/Warning Summary for 06 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    0    0 |   0     0     0     0     0 |   0
Fl Flood      1    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
No Warnings Issued

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From akrherz at iastate.edu  Fri Apr  8 11:00:19 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Fri, 8 Apr 2011 11:00:19 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104081600.p38G0JJC016897@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 08 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-07
 | Title : 4-5 Apr Severe Outbreak
 | Date  : 07 Apr 05:53 AM
 | Votes : Good: 23   Bad: 4
 +----------------------------------------------

The most recent outbreak of severe weather over the eastern US was one 
of the larger ones on record.  The featured map presents the time 
composite maximum base reflectivity of NEXRAD along with the tornado 
and severe thunderstorm warnings issued.  The deep south is nearly 
completely covered with both.  The main severe weather mode was 
damaging winds and a number of tornadoes were reported as well.  There 
are 733 warnings shown on this map!

> NWS Watch/Warning Summary for 07 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    5    0 |   0     0     0     0     0 |   0
Fl Flood      1    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 5 Verified: 2  [40.0 %]
Reduction of Size Versus County Based     [69.4 %]
Average Perimeter Ratio                   [12.3 %]
Percentage of Warned Area Verified (15km) [12.3 %]
Average Storm Based Warning Size          [1467 sq km]
Probability of Detection(higher is better)[0.67]
False Alarm Ratio (lower is better)       [0.60]
Critical Success Index (higher is better) [0.33]

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From akrherz at iastate.edu  Sat Apr  9 11:00:56 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sat, 9 Apr 2011 11:00:56 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104091600.p39G0uDO007125@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 09 April 2011

> News

 +----------------------------------------------
 | Title : March ASOS Data Uploaded
 | Date  : 09 Apr 06:07 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/request/asos/1min.phtml
 +----------------------------------------------

<p>The one minute Iowa ASOS data for March has been uploaded to the 
IEM.  This archive also includes data for Moline, Omaha, and Sioux 
Falls.

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-08
 | Title : Weather won't shutdown
 | Date  : 08 Apr 05:53 AM
 | Votes : Good: 21   Bad: 3
 +----------------------------------------------

While the federal government is expected to shutdown today, our active 
weather is just getting started.  The Storm Prediction Center has a 
somewhat rare moderate risk of severe weather already forecasted three 
days out for Sunday.  The featured image shows a model's forecast of 
dew point for Sunday afternoon.  The strong gradient of dew point is 
indicative of a dry line feature that is expected to make it into the 
state.  These boundaries can help focus severe storm development and 
give them low level wind sheer to become more severe. The other thing 
to note in the plot is the summer like dew points in the warm sector of 
the storm well into the upper 60s.  Severe weather is possible in our 
area for the next three days.

> NWS Watch/Warning Summary for 08 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      10    0 |   0     0     0     0     0 |   1
Svr Tstorm  123    0 |   0     0     0     0     0 |   4
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 135 Verified: 66  [48.9 %]
Reduction of Size Versus County Based     [69.7 %]
Average Perimeter Ratio                   [20.5 %]
Percentage of Warned Area Verified (15km) [27.3 %]
Average Storm Based Warning Size          [1319 sq km]
Probability of Detection(higher is better)[0.88]
False Alarm Ratio (lower is better)       [0.51]
Critical Success Index (higher is better) [0.46]

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From akrherz at iastate.edu  Sun Apr 10 11:01:46 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sun, 10 Apr 2011 11:01:46 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104101601.p3AG1kLp006789@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 10 April 2011

> News

    No news is good news

> Daily Feature

    No feature posted

> NWS Watch/Warning Summary for 09 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      59   28 |   1     0    15     2    13 |   4
Svr Tstorm  261   22 |   2     0     7    14    39 |   5
Fl Flood      9    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 315 Verified: 149  [47.3 %]
Reduction of Size Versus County Based     [63.5 %]
Average Perimeter Ratio                   [23.8 %]
Percentage of Warned Area Verified (15km) [24.5 %]
Average Storm Based Warning Size          [1401 sq km]
Probability of Detection(higher is better)[0.85]
False Alarm Ratio (lower is better)       [0.53]
Critical Success Index (higher is better) [0.44]

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From akrherz at iastate.edu  Mon Apr 11 11:01:17 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Mon, 11 Apr 2011 11:01:17 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104111601.p3BG1HVs016545@despam-10.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 11 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-10
 | Title : Tornadoes, after dark
 | Date  : 10 Apr 06:48 AM
 | Votes : Good: 15   Bad: 3
 +----------------------------------------------

A handful of powerful supercell storms lifted northeast along the warm 
front Saturday evening putting down a number of tornadoes.  The 
featured map is a summary of the local storm reports with most of those 
tornado reports coming from one supercell that developed north of Omaha 
and survived all the way to northcentral Iowa.  This situation was 
particularly dangerous as many of the tornadoes occured after sunset.  
The town of Mapleton was particularly hard hit with reports this 
morning of over half of the town heavily damaged.

> NWS Watch/Warning Summary for 10 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      33    0 |   6     0     0     0     0 |   6
Svr Tstorm  127    4 |   9     3     4     1     2 |   1
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
PHP Notice:  Undefined index: SGF-2011-04-11 04:37:00+00-D-0-2 E Vichy in /mesonet/www/apps/iemwebsite/include/cow.php on line 464
PHP Notice:  Undefined index: ts in /mesonet/www/apps/iemwebsite/include/cow.php on line 467
PHP Notice:  Undefined index: buffered in /mesonet/www/apps/iemwebsite/include/cow.php on line 401
SVR+TOR Warnings Issued: 162 Verified: 56  [34.6 %]
Reduction of Size Versus County Based     [63.3 %]
Average Perimeter Ratio                   [18.5 %]
Percentage of Warned Area Verified (15km) [14.8 %]
Average Storm Based Warning Size          [2011 sq km]
Probability of Detection(higher is better)[0.81]
False Alarm Ratio (lower is better)       [0.65]
Critical Success Index (higher is better) [0.32]

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From akrherz at iastate.edu  Tue Apr 12 11:00:39 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Tue, 12 Apr 2011 11:00:39 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104121600.p3CG0dDd017115@despam-10.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 12 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-11
 | Title : Early for 90
 | Date  : 11 Apr 05:51 AM
 | Votes : Good: 16   Bad: 4
 +----------------------------------------------

Thanks for a strong low pressure center to our north pulling warm and 
humid air into the state on Sunday, temperatures climbed well into the 
80s and even topped out at 90 in Des Moines.  The featured chart 
presents the first day of each year that the temperature hit 90 or 
above.  This year tied for second earliest behind 1986.  The average 
first day is not until the first week of June!  The bar colors 
represent if the year was earlier (red) or later (blue) than average.  
Temperatures today will struggle to reach 60 with cooler weather 
expected for the rest of the week.

> NWS Watch/Warning Summary for 11 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      19    0 |   0     0     0     0     0 |   6
Svr Tstorm   97    0 |   0     0     0     0     0 |   1
Fl Flood      5    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 94 Verified: 55  [58.5 %]
Reduction of Size Versus County Based     [53.3 %]
Average Perimeter Ratio                   [15.9 %]
Percentage of Warned Area Verified (15km) [19.1 %]
Average Storm Based Warning Size          [3187 sq km]
Probability of Detection(higher is better)[0.73]
False Alarm Ratio (lower is better)       [0.41]
Critical Success Index (higher is better) [0.48]

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From akrherz at iastate.edu  Wed Apr 13 11:00:16 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Wed, 13 Apr 2011 11:00:16 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104131600.p3DG0GXu012673@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 13 April 2011

> News

 +----------------------------------------------
 | Title : New York Times Article
 | Date  : 13 Apr 07:37 AM
 | Author: Daryl Herzmann
 | URL   : http://www.nytimes.com/2011/04/13/business/13erosion.html?_r=1
 +----------------------------------------------

<p>There is a story in the New York Times this morning taking about 
soil erosion and features some data from the <a 
href="http://wepp.mesonet.agron.iastate.edu">Iowa Daily Erosion 
Project</a>, which is housed here under the IEM umbrella of projects.  
This project uses IEM data and produces a statewide analysis of soil 
displacement and runoff using the <a 
href="http://www.ars.usda.gov/Research/docs.htm?docid=10621">WEPP</a> 
model.

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-12
 | Title : Dry April for some
 | Date  : 12 Apr 05:53 AM
 | Votes : Good: 14   Bad: 5
 +----------------------------------------------

The featured map presents rainfall estimates for April.  Some portions 
of the state have missed out on the rainfall events this month, while 
most others have not seen extreme totals to this point.  Our next 
chance of rain and even snow arrives later this week with the heaviest 
totals expected over eastern Iowa.

> NWS Watch/Warning Summary for 12 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    8    0 |   0     0     0     0     0 |   0
Fl Flood     16    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 8 Verified: 2  [25.0 %]
Reduction of Size Versus County Based     [68.9 %]
Average Perimeter Ratio                   [7.3 %]
Percentage of Warned Area Verified (15km) [7.7 %]
Average Storm Based Warning Size          [1644 sq km]
Probability of Detection(higher is better)[0.50]
False Alarm Ratio (lower is better)       [0.75]
Critical Success Index (higher is better) [0.20]

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From akrherz at iastate.edu  Thu Apr 14 11:00:07 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Thu, 14 Apr 2011 11:00:07 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104141600.p3EG0786016970@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 14 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-13
 | Title : Warmth, then snow
 | Date  : 13 Apr 05:52 AM
 | Votes : Good: 16   Bad: 6
 +----------------------------------------------

After warming to near 90 degrees this past weekend, chances of snow are 
in the forecast for Friday.  The featured chart presents the maximum 
temperature for the week leading up to the final snowfall of the 
winter/spring season. The size of the dots represent the snowfall 
amount with the largest value of 11 inches on the map and the minimum 
was at least an one inch requirement for the chart. Having warm 
temperatures and then a snowfall is certainly not uncommon, but if it 
were to happen Friday and be the final snowfall of the season, it would 
be the warmest temperature before a final snowfall!

> NWS Watch/Warning Summary for 13 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    3    0 |   0     0     0     0     0 |   0
Fl Flood      1    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 3 Verified: 2  [66.7 %]
Reduction of Size Versus County Based     [81.9 %]
Average Perimeter Ratio                   [1.6 %]
Percentage of Warned Area Verified (15km) [18.1 %]
Average Storm Based Warning Size          [2582 sq km]
Probability of Detection(higher is better)[1.00]
False Alarm Ratio (lower is better)       [0.33]
Critical Success Index (higher is better) [0.67]

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From akrherz at iastate.edu  Fri Apr 15 11:00:53 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Fri, 15 Apr 2011 11:00:53 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104151600.p3FG0rE2007051@despam-10.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 15 April 2011

> News

 +----------------------------------------------
 | Title : Warnings KML Download
 | Date  : 14 Apr 01:51 PM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/request/gis/watchwarn.phtml
 +----------------------------------------------

<p>I've improved the archived NWS Watch/Warning download application to 
include a KML option.  This allows one to import the data into Google 
Earth.  Please let me know if this doesn't work out for you.

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-14
 | Title : A good match
 | Date  : 14 Apr 05:48 AM
 | Votes : Good: 28   Bad: 1
 +----------------------------------------------

A few days ago, the total rainfall for April was featured showing a 
swath over the state that has missed out on the heavier rains (first 
image).  A group here at ISU is working with a satellite called SMOS 
that attempts to sense the moisture in the upper few inches of soil.  
The SMOS soil moisture percentage is presented in the second image.  
The patterns line up very nicely where the areas that have received 
rains have wetter top soils than other areas.  You may think this to be 
obvious, but having two independent datasets agree with each another is 
an encouraging sign and hope that the satellite is providing quality 
information.  This plot has implications for spring farm field work as 
the upper top soil needs to be somewhat dry to support heavy equipment 
transversing it. Look for more SMOS information to appear on the IEM 
soon!

> NWS Watch/Warning Summary for 14 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      77    0 |   0     0     0     0     0 |   3
Svr Tstorm   93    0 |   0     0     0     0     0 |   2
Fl Flood      3    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 172 Verified: 72  [41.9 %]
Reduction of Size Versus County Based     [66.8 %]
Average Perimeter Ratio                   [18.4 %]
Percentage of Warned Area Verified (15km) [18.1 %]
Average Storm Based Warning Size          [1860 sq km]
Probability of Detection(higher is better)[0.92]
False Alarm Ratio (lower is better)       [0.58]
Critical Success Index (higher is better) [0.40]

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From akrherz at iastate.edu  Sat Apr 16 11:03:47 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sat, 16 Apr 2011 11:03:47 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104161603.p3GG3ljt016721@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 16 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-15
 | Title : Warm and Cold April Highs
 | Date  : 15 Apr 05:52 AM
 | Votes : Good: 13   Bad: 10
 +----------------------------------------------

Today has the chance to be the coldest high temperature so far for the 
month of April for Ames.  The featured chart presents the frequency of 
a day in April having the coldest or warmest high temperature for the 
April of each year. So having today have the coldest high for the month 
has happened twice in the past. The chart indicates that the coldest 
high is typically during the first 6 days of the month.  Of course, our 
increasing daily climatology helps guide this chart and you can see the 
most number of warmest highs occurs on the last day of the month.

> NWS Watch/Warning Summary for 15 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado     206    0 |   0     0     0     0     0 |   9
Svr Tstorm  235    0 |   0     1     0     0     0 |   0
Fl Flood     19    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 431 Verified: 138  [32.0 %]
Reduction of Size Versus County Based     [62.7 %]
Average Perimeter Ratio                   [16.0 %]
Percentage of Warned Area Verified (15km) [16.0 %]
Average Storm Based Warning Size          [1814 sq km]
Probability of Detection(higher is better)[0.85]
False Alarm Ratio (lower is better)       [0.68]
Critical Success Index (higher is better) [0.30]

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From akrherz at iastate.edu  Sun Apr 17 11:01:12 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sun, 17 Apr 2011 11:01:12 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104171601.p3HG1CQk004919@despam-10.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 17 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-16
 | Title : Snow on the Eagles
 | Date  : 16 Apr 09:36 AM
 | Votes : Good: 19   Bad: 6
 +----------------------------------------------

Decorah, Iowa now famous "Eagle Cam" shows the result of hopefully our 
last bout with winter, snow!  Light snow fell yesterday over portions 
of northwest Iowa and now today over northeast Iowa.  The snow does not 
have much chance of sticking around this time of year, but the cool 
weather is forecasted to continue through the end of next week.

> NWS Watch/Warning Summary for 16 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado     121    0 |   0     0     0     0     0 |   5
Svr Tstorm  114    0 |   0     0     0     0     0 |   0
Fl Flood     23    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 225 Verified: 96  [42.7 %]
Reduction of Size Versus County Based     [63.3 %]
Average Perimeter Ratio                   [11.9 %]
Percentage of Warned Area Verified (15km) [21.1 %]
Average Storm Based Warning Size          [1691 sq km]
Probability of Detection(higher is better)[0.88]
False Alarm Ratio (lower is better)       [0.57]
Critical Success Index (higher is better) [0.40]

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From akrherz at iastate.edu  Mon Apr 18 11:00:10 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Mon, 18 Apr 2011 11:00:10 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104181600.p3IG0Aha024593@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 18 April 2011

> News

    No news is good news

> Daily Feature

    No feature posted

> NWS Watch/Warning Summary for 17 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    2    0 |   0     0     0     0     0 |   0
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 2 Verified: 0  [0.0 %]
Reduction of Size Versus County Based     [62.2 %]
Average Perimeter Ratio                   [0.0 %]
Percentage of Warned Area Verified (15km) [0.0 %]
Average Storm Based Warning Size          [1578 sq km]
Probability of Detection(higher is better)[0.00]
False Alarm Ratio (lower is better)       [1.00]
Critical Success Index (higher is better) [0.00]

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From akrherz at iastate.edu  Tue Apr 19 11:00:09 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Tue, 19 Apr 2011 11:00:09 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104191600.p3JG096Y010402@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 19 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-18
 | Title : Busier than last year
 | Date  : 18 Apr 05:58 AM
 | Votes : Good: 23   Bad: 4
 +----------------------------------------------

This past weekend saw yet another severe weather outbreak with numerous 
tornadoes reported over the deep south.  The featured map (click for a 
better view) shows the difference in number of severe and tornado 
warnings this year versus last year.  Only counties shown in dark blue 
have seen a decrease.  The deep south certainly stands out with Alabama 
having all counties with higher totals than last year.  The total count 
in this plot is 4,779 warnings for 2010 and 14,517 warnings for 2011.  
The total count for 2011 is the largest on record for the period prior 
to 18 April.

> NWS Watch/Warning Summary for 18 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    1    0 |   0     0     0     0     0 |   0
Fl Flood      0    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 2 Verified: 1  [50.0 %]
Reduction of Size Versus County Based     [75.5 %]
Average Perimeter Ratio                   [11.7 %]
Percentage of Warned Area Verified (15km) [24.3 %]
Average Storm Based Warning Size          [1079 sq km]
Probability of Detection(higher is better)[0.33]
False Alarm Ratio (lower is better)       [0.50]
Critical Success Index (higher is better) [0.25]

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From akrherz at iastate.edu  Wed Apr 20 11:02:37 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Wed, 20 Apr 2011 11:02:37 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104201602.p3KG2brc008350@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 20 April 2011

> News

 +----------------------------------------------
 | Title : Server Outages
 | Date  : 19 Apr 10:55 PM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/
 +----------------------------------------------

<p>The various IEM services were unavailable Tuesday evening from about 
8 PM till a bit after 10 PM due to excessive web load.  I've got some 
applications that aren't very efficient and they seem to bog things 
down.  At a certain point, the server gets too far behind and then 
gives up :(  We'll try to speed some things up.  Sorry about this.

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-19
 | Title : Lately under performing
 | Date  : 19 Apr 05:51 AM
 | Votes : Good: 20   Bad: 6
 +----------------------------------------------

Our recent stretch of weather has seen high temperatures well below 
normal and, as shown by the featured chart, below the 25th percentile.  
The forecast does not hold much hope for breaking out of this any time 
soon with more rain and highs near 50 expected to continue.  This is 
not good news for farmers who wish to start planting corn this time of 
year.

> NWS Watch/Warning Summary for 19 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado     116    0 |   0     0     0     0     0 |   5
Svr Tstorm  304    0 |   0     0     1     1     0 |   5
Fl Flood     20    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 438 Verified: 212  [48.4 %]
Reduction of Size Versus County Based     [59.9 %]
Average Perimeter Ratio                   [20.5 %]
Percentage of Warned Area Verified (15km) [23.0 %]
Average Storm Based Warning Size          [2230 sq km]
Probability of Detection(higher is better)[0.86]
False Alarm Ratio (lower is better)       [0.52]
Critical Success Index (higher is better) [0.45]

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From akrherz at iastate.edu  Thu Apr 21 11:01:47 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Thu, 21 Apr 2011 11:01:47 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104211601.p3LG1lAN001186@despam-10.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 21 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-20
 | Title : Severe April
 | Date  : 20 Apr 12:56 PM
 | Votes : Good: 9   Bad: 2
 +----------------------------------------------

And yet another explosive round of severe weather visited the United 
States last night with numerous reports of large hail, extreme winds, 
and tornadoes.  These reports were south and east of Iowa as we 
suffered through a cold easterly wind and snow over northern Iowa.  The 
featured chart presents the number of county based severe thunderstorm 
and tornado warnings issued by the NWS during April.  This year's total 
is already nearly double of last April and well above the previous 
maximum of 2009.

> NWS Watch/Warning Summary for 20 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      38    0 |   0     0     0     0     0 |   2
Svr Tstorm  287    0 |   0     0     0     0     0 |   9
Fl Flood     32    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 284 Verified: 138  [48.6 %]
Reduction of Size Versus County Based     [62.9 %]
Average Perimeter Ratio                   [16.6 %]
Percentage of Warned Area Verified (15km) [19.1 %]
Average Storm Based Warning Size          [2153 sq km]
Probability of Detection(higher is better)[0.82]
False Alarm Ratio (lower is better)       [0.51]
Critical Success Index (higher is better) [0.44]

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From akrherz at iastate.edu  Fri Apr 22 11:01:04 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Fri, 22 Apr 2011 11:01:04 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104221601.p3MG14X1008172@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 22 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-21
 | Title : This explains a lot
 | Date  : 21 Apr 05:51 AM
 | Votes : Good: 20   Bad: 4
 +----------------------------------------------

The featured chart is a wind rose for observations reported so far this 
month from the Ames Airport.  A wind rose nicely shows the summarized 
combination of wind direction and wind speed.  The longer the bar is, 
the more common the wind has been from that direction.  The chart shows 
the lack of winds from the SSE around to the west.  These winds would 
be bringing warmer air into the state and make things feel more like 
spring.  Our dominant directions have been ENE and NW, which is a cold 
and wet combination.

> NWS Watch/Warning Summary for 21 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      11    0 |   0     0     0     0     0 |   0
Svr Tstorm  109    0 |   0     0     0     0     0 |   3
Fl Flood      9    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 111 Verified: 47  [42.3 %]
Reduction of Size Versus County Based     [76.0 %]
Average Perimeter Ratio                   [17.6 %]
Percentage of Warned Area Verified (15km) [14.4 %]
Average Storm Based Warning Size          [1916 sq km]
Probability of Detection(higher is better)[0.77]
False Alarm Ratio (lower is better)       [0.58]
Critical Success Index (higher is better) [0.38]

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From akrherz at iastate.edu  Sat Apr 23 11:01:01 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sat, 23 Apr 2011 11:01:01 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104231601.p3NG11qk008015@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 23 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-22
 | Title : Not helping the soils much
 | Date  : 22 Apr 05:48 AM
 | Votes : Good: 18   Bad: 6
 +----------------------------------------------

Our recent stretch of cool and cloudy weather has cooled off soil 
temperatures to well below normal values for this time of year as 
illustrated by the featured chart.  Normal temperatures are approaching 
50 degrees, which is warm enough to support corn growth.  With 
temperatures this year well below that value, it will take a few warm 
and sunny days to get the ground warmed up again and also dried out to 
allow equipment to pass over fields.

> NWS Watch/Warning Summary for 22 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      57    0 |   0     0     0     0     0 |   3
Svr Tstorm  154    0 |   0     0     0     1     0 |   5
Fl Flood     20    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 222 Verified: 92  [41.4 %]
Reduction of Size Versus County Based     [67.5 %]
Average Perimeter Ratio                   [23.0 %]
Percentage of Warned Area Verified (15km) [20.2 %]
Average Storm Based Warning Size          [1709 sq km]
Probability of Detection(higher is better)[0.90]
False Alarm Ratio (lower is better)       [0.59]
Critical Success Index (higher is better) [0.40]

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From akrherz at iastate.edu  Sun Apr 24 11:01:02 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sun, 24 Apr 2011 11:01:02 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104241601.p3OG12sd015135@despam-10.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 24 April 2011

> News

 +----------------------------------------------
 | Title : Server Outage
 | Date  : 23 Apr 11:09 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/
 +----------------------------------------------

<p>The most important part of the IEM failed this morning around 6:45 
AM.  I've got some spare things gathered together to keep the IEM sort 
of going and got the website back up around 10 AM.  Augh, lots of old 
IEM infrastructure failing apart :(

> Daily Feature

    No feature posted

> NWS Watch/Warning Summary for 23 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      48    0 |   0     0     0     0     0 |   3
Svr Tstorm  187    0 |   0     0     0     0     0 |   4
Fl Flood     52    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 215 Verified: 67  [31.2 %]
Reduction of Size Versus County Based     [63.7 %]
Average Perimeter Ratio                   [24.4 %]
Percentage of Warned Area Verified (15km) [14.2 %]
Average Storm Based Warning Size          [1611 sq km]
Probability of Detection(higher is better)[0.84]
False Alarm Ratio (lower is better)       [0.69]
Critical Success Index (higher is better) [0.29]

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From akrherz at iastate.edu  Mon Apr 25 11:01:09 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Mon, 25 Apr 2011 11:01:09 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104251601.p3PG199M019534@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 25 April 2011

> News

 +----------------------------------------------
 | Title : More outages
 | Date  : 25 Apr 08:03 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/
 +----------------------------------------------

<p>Unbelievable, two more computers within the IEM cluster have failed 
for different reasons overnight.  I don't know what I am going to do.

> Daily Feature

    No feature posted

> NWS Watch/Warning Summary for 24 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado      53    0 |   0     0     0     0     0 |   3
Svr Tstorm  175    0 |   0     0     0     0     0 |   4
Fl Flood     34    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 226 Verified: 66  [29.2 %]
Reduction of Size Versus County Based     [70.4 %]
Average Perimeter Ratio                   [19.4 %]
Percentage of Warned Area Verified (15km) [13.8 %]
Average Storm Based Warning Size          [1666 sq km]
Probability of Detection(higher is better)[0.83]
False Alarm Ratio (lower is better)       [0.71]
Critical Success Index (higher is better) [0.28]

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From akrherz at iastate.edu  Tue Apr 26 11:11:45 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Tue, 26 Apr 2011 11:11:45 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104261611.p3QGBjg1022165@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 26 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-25
 | Title : 11 days below 60
 | Date  : 25 Apr 05:57 AM
 | Votes : Good: 17   Bad: 5
 +----------------------------------------------

Our streak of cool weather for this time of year continues with Ames 
having recorded 11 straight days below 60 degrees.  Based on IEM 
calculations, the longest such streak this late in the year was 14 days 
ending on 7 May 1917.  The forecast has a chance of tying this record 
before warmer air arrives on Thursday.

> NWS Watch/Warning Summary for 25 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado     125    0 |   0     0     0     0     0 |   6
Svr Tstorm  298    0 |   0     0     0     0     0 |   5
Fl Flood     82    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 421 Verified: 145  [34.4 %]
Reduction of Size Versus County Based     [64.6 %]
Average Perimeter Ratio                   [17.6 %]
Percentage of Warned Area Verified (15km) [12.9 %]
Average Storm Based Warning Size          [2154 sq km]
Probability of Detection(higher is better)[0.87]
False Alarm Ratio (lower is better)       [0.66]
Critical Success Index (higher is better) [0.33]

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From akrherz at iastate.edu  Wed Apr 27 11:13:26 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Wed, 27 Apr 2011 11:13:26 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104271613.p3RGDQGP019401@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 27 April 2011

> News

 +----------------------------------------------
 | Title : 73 million hits
 | Date  : 27 Apr 07:19 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/
 +----------------------------------------------

<p>The IEM web farm set another milestone for hits yesterday exceeding 
73 million.  The total amount of traffic was just short of 1 terabyte.  
Most of this traffic was against the <a 
href="http://mesonet.agron.iastate.edu/ogc/">NEXRAD tilecache</a> 
service. 

<pre>
17 Jun 2001:    1rst hit
25 Jun 2001:      1,000+
19 Sep 2001:     10,000+
19 Mar 2004:    100,000+
25 May 2005:    200,000+
30 May 2006:    500,000+
29 Nov 2006:  1,000,000+
24 Feb 2007:  2,000,000+
17 Oct 2007:  3,000,000+
 5 Feb 2008:  4,000,000+
27 May 2008:  5,000,000+
 5 Jun 2008:  8,000,000+
15 Jul 2009: 10,000,000+
 7 Jan 2010: 15,000,000+
29 Jan 2010: 16,000,000+
 9 Feb 2010: 18,000,000+
23 Apr 2010: 19,000,000+
24 Apr 2010: 22,000,000+
14 May 2010: 23,000,000+
23 Jun 2010: 28,000,000+
23 Jul 2010: 31,000,000+
26 Oct 2010: 34,000,000+
 9 Jan 2011: 39,000,000+
31 Jan 2011: 45,000,000+
 1 Feb 2011: 64,000,000+
26 Apr 2011: 73,000,000+
</pre>

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-26
 | Title : Remarkable April
 | Date  : 26 Apr 07:38 AM
 | Votes : Good: 15   Bad: 9
 +----------------------------------------------

The featured map presents an IEM calculation of the maximum reported 
temperature for a period from 14 to 25 April inclusive.  Most of the 
Upper Midwest is shown in the mid 60s and lower!  This is remarkably 
cool for this time of year and has impacted the onset of spring 
planting season over the corn belt.   We need warmer and sunnier 
weather, but the forecast only have brief periods of either.

> NWS Watch/Warning Summary for 26 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado     218    0 |   0     0     0     0     0 |   9
Svr Tstorm  418    0 |   0     0     0     0     0 |   4
Fl Flood     59    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 623 Verified: 180  [28.9 %]
Reduction of Size Versus County Based     [65.6 %]
Average Perimeter Ratio                   [21.3 %]
Percentage of Warned Area Verified (15km) [12.9 %]
Average Storm Based Warning Size          [1868 sq km]
Probability of Detection(higher is better)[0.86]
False Alarm Ratio (lower is better)       [0.71]
Critical Success Index (higher is better) [0.28]

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From akrherz at iastate.edu  Thu Apr 28 11:03:45 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Thu, 28 Apr 2011 11:03:45 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104281603.p3SG3jNB030598@despam-10.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 28 April 2011

> News

 +----------------------------------------------
 | Title : 78 million hits
 | Date  : 28 Apr 07:26 AM
 | Author: Daryl Herzmann
 | URL   : http://mesonet.agron.iastate.edu/
 +----------------------------------------------

<p>The IEM web farm set another milestone yesterday with 78 million 
hits. This amounted to 1.2 terabytes of outbound traffic, which was 
25% of Iowa State's total outbound network usage yesterday!  
Thankfully, all the IEM systems performed well and Iowa State has very 
large network pipes to the Internet. I'd be very happy not to break 
any more milestones for the next few years...

<p><pre>
17 Jun 2001:    1rst hit
25 Jun 2001:      1,000+
19 Sep 2001:     10,000+
19 Mar 2004:    100,000+
25 May 2005:    200,000+
30 May 2006:    500,000+
29 Nov 2006:  1,000,000+
24 Feb 2007:  2,000,000+
17 Oct 2007:  3,000,000+
 5 Feb 2008:  4,000,000+
27 May 2008:  5,000,000+
 5 Jun 2008:  8,000,000+
15 Jul 2009: 10,000,000+
 7 Jan 2010: 15,000,000+
29 Jan 2010: 16,000,000+
 9 Feb 2010: 18,000,000+
23 Apr 2010: 19,000,000+
24 Apr 2010: 22,000,000+
14 May 2010: 23,000,000+
23 Jun 2010: 28,000,000+
23 Jul 2010: 31,000,000+
26 Oct 2010: 34,000,000+
 9 Jan 2011: 39,000,000+
31 Jan 2011: 45,000,000+
 1 Feb 2011: 64,000,000+
26 Apr 2011: 73,000,000+
27 Apr 2011: 78,000,000+
</pre>

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-27
 | Title : A month faster than last year
 | Date  : 27 Apr 07:39 AM
 | Votes : Good: 8   Bad: 3
 +----------------------------------------------

The nation's recent stretch of severe weather continues with a high 
risk of severe weather issued today over portions of Alabama.  The 
Storm Prediction Center has issued its 228th watch of the year this 
morning.  Last year, it took until the 27th of May for the 228th watch 
of the year to be issued as shown by the featured chart.  Three other 
years since 1997 have seen more watches issued by this date than this 
year.

> NWS Watch/Warning Summary for 27 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado     463    0 |   0     0     0     0     0 |  19
Svr Tstorm  443    0 |   0     0     0     0     0 |   4
Fl Flood     73    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 896 Verified: 276  [30.8 %]
Reduction of Size Versus County Based     [61.6 %]
Average Perimeter Ratio                   [23.6 %]
Percentage of Warned Area Verified (15km) [15.7 %]
Average Storm Based Warning Size          [1905 sq km]
Probability of Detection(higher is better)[0.89]
False Alarm Ratio (lower is better)       [0.69]
Critical Success Index (higher is better) [0.30]

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From akrherz at iastate.edu  Fri Apr 29 11:23:25 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Fri, 29 Apr 2011 11:23:25 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104291623.p3TGNPFI011285@despam-12.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 29 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-28
 | Title : 41.5 Consecutive Hours of Tornado Warnings
 | Date  : 28 Apr 05:58 AM
 | Votes : Good: 23   Bad: 7
 +----------------------------------------------

The tornado outbreak of yesterday may go down in the record books as 
the largest in US history.  The featured chart displays, at five minute 
intervals, the total number of active tornado warnings and areal 
coverage of these warnings expressed in square kilometers.  Since 3 PM 
on Tuesday, there has been at least one active tornado warning making 
for a streak of 39 straight hours (at the time of this writing).  At 
its peak yesterday evening, the areal coverage of would have been large 
enough to cover roughly one third of Iowa.  I'll update this chart once 
the streak ends and post the final duration number.<p><b>Update</b> The streak ended at 8:45 AM CDT

> NWS Watch/Warning Summary for 28 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado     123    0 |   0     0     0     0     0 |   6
Svr Tstorm  190    0 |   0     0     0     0     0 |   3
Fl Flood     30    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 290 Verified: 81  [27.9 %]
Reduction of Size Versus County Based     [60.8 %]
Average Perimeter Ratio                   [15.1 %]
Percentage of Warned Area Verified (15km) [11.6 %]
Average Storm Based Warning Size          [1983 sq km]
Probability of Detection(higher is better)[0.78]
False Alarm Ratio (lower is better)       [0.72]
Critical Success Index (higher is better) [0.26]

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From akrherz at iastate.edu  Sat Apr 30 11:00:08 2011
From: akrherz at iastate.edu (daryl herzmann)
Date: Sat, 30 Apr 2011 11:00:08 -0500
Subject: IEM Daily Bulletin
Message-ID: <201104301600.p3UG08eY025487@despam-11.iastate.edu>


Iowa Environmental Mesonet Daily Bulletin for 30 April 2011

> News

    No news is good news

> Daily Feature

 +----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-04-29
 | Title : Finally above 60
 | Date  : 29 Apr 05:55 AM
 | Votes : Good: 16   Bad: 2
 +----------------------------------------------

For some locations in Iowa, our recent stretch of sub 60 degree weather 
finally came to an end on Thursday.  For Ames, this was the longest 
such stretch this late in the spring season at 14 days.  The featured 
chart shows the longest stretches for Ames and then the coldest low and 
high temperature afterwards until the end of August.  The forecast has 
highs mostly in the 60s for the next seven days.

> NWS Watch/Warning Summary for 29 Apr 2011

             Summary +_________ By WFO ____________+  Watches 
Type         US   IA | ARX   DVN   DMX   OAX   FSD |  US 
Tornado       0    0 |   0     0     0     0     0 |   0
Svr Tstorm    3    0 |   0     0     0     0     0 |   0
Fl Flood      1    0 |   0     0     0     0     0 | N/A

ARX = LaCrosse, WI  DVN = Davenport, IA    DMX = Des Moines, IA 
OAX = Omaha, NE     FSD = Sioux Falls, SD

> IEM Cow Report
SVR+TOR Warnings Issued: 3 Verified: 0  [0.0 %]
Reduction of Size Versus County Based     [87.9 %]
Average Perimeter Ratio                   [1.4 %]
Percentage of Warned Area Verified (15km) [0.0 %]
Average Storm Based Warning Size          [876 sq km]
Probability of Detection(higher is better)[0.00]
False Alarm Ratio (lower is better)       [1.00]
Critical Success Index (higher is better) [0.00]

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