From akrherz at iastate.edu Thu Apr 1 11:02:00 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 1 Apr 2010 11:02:00 -0500 Subject: IEM Daily Bulletin Message-ID: <201004011602.o31G20uu031549@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 01 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-03-31 | Title : Finally, warm weather | Date : 31 Mar 05:07 AM | Votes : Good: 22 Bad: 7 +---------------------------------------------- Thanks to a blustery southerly wind, temperatures finally warmed well into the 70s and even around 80 in some locations in Iowa yesterday. This was the warmest weather we have experienced since last October. Today looks to be even warmer with more locations closer to 80! This weather is nearly perfect to help dry out a very wet landscape and prepare the soil for crop planting. The warm weather looks to stick around with no immediate return of winter in sight! > NWS Watch/Warning Summary for 31 Mar 2010 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 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 No Warnings Issued -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri Apr 2 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 2 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004021601.o32G14G2001310@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 02 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-01 | Title : No fool for March | Date : 01 Apr 05:06 AM | Votes : Good: 32 Bad: 6 +---------------------------------------------- March sure went out like a lamb with very warm temperatures in the 70s. The featured chart displays the daily high and low temperature percentiles for March from the Ames Airport. In general you can see how the low temperatures were warmer than average for most of the month. April will start off with a very warm day in the 80s for many before a cold front brings rain on Friday. > NWS Watch/Warning Summary for 01 Apr 2010 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 | 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 SVR+TOR Warnings Issued: 5 Verified: 2 [40.0 %] Reduction of Size Versus County Based [59.5 %] Average Perimeter Ratio [27.6 %] Percentage of Warned Area Verified (15km) [15.4 %] Average Storm Based Warning Size [2515 sq km] Probability of Detection(higher is better)[0.71] False Alarm Ratio (lower is better) [0.60] Critical Success Index (higher is better) [0.34] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat Apr 3 11:01:06 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 3 Apr 2010 11:01:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201004031601.o33G16kl026357@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 03 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-02 | Title : A very warm fool's day | Date : 02 Apr 05:08 AM | Votes : Good: 35 Bad: 7 +---------------------------------------------- Temperatures soared on Thursday well into the 80s and fell just a few degrees short of records for the date. On a statewide basis, yesterday was warmer than nearly every day during July of 2009! The featured analysis displays the number of days during 2009 that were warmer than 1 April 2010. It is amazing to consider that for some locations, there were only a handful of days during all of 2009 warmer than yesterday! A cold front will sweep the state clean of the really warm air today, but temperatures this weekend will be spring like in the 60s. > NWS Watch/Warning Summary for 02 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 41 6 | 2 1 5 0 1 | 3 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: 41 Verified: 28 [68.3 %] Reduction of Size Versus County Based [54.7 %] Average Perimeter Ratio [36.8 %] Percentage of Warned Area Verified (15km) [22.3 %] Average Storm Based Warning Size [3732 sq km] Probability of Detection(higher is better)[0.86] False Alarm Ratio (lower is better) [0.32] Critical Success Index (higher is better) [0.62] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Apr 4 11:01:06 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 4 Apr 2010 11:01:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201004041601.o34G16k6024842@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 04 April 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 03 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 18 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: 18 Verified: 10 [55.6 %] Reduction of Size Versus County Based [43.3 %] Average Perimeter Ratio [49.0 %] Percentage of Warned Area Verified (15km) [16.2 %] Average Storm Based Warning Size [3355 sq km] Probability of Detection(higher is better)[0.85] False Alarm Ratio (lower is better) [0.44] Critical Success Index (higher is better) [0.50] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Apr 5 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 5 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004051601.o35G14Uo006581@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 05 April 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 04 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 15 0 | 0 0 0 0 0 | 1 Svr Tstorm 47 2 | 0 10 1 0 0 | 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 SVR+TOR Warnings Issued: 57 Verified: 19 [33.3 %] Reduction of Size Versus County Based [65.2 %] Average Perimeter Ratio [32.9 %] Percentage of Warned Area Verified (15km) [22.5 %] Average Storm Based Warning Size [1523 sq km] Probability of Detection(higher is better)[0.85] False Alarm Ratio (lower is better) [0.67] Critical Success Index (higher is better) [0.31] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Apr 6 11:01:09 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 6 Apr 2010 11:01:09 -0500 Subject: IEM Daily Bulletin Message-ID: <201004061601.o36G19WE011482@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 06 April 2010 > News +---------------------------------------------- | Title : March ASOS data uploaded | Date : 06 Apr 06:29 AM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/request/asos/1min.phtml +---------------------------------------------- The one minute interval Iowa ASOS data for March 2010 has been uploaded to the IEM. Data for Moline, Sioux Falls, and Omaha is included as well. If you have other ASOS sites you wished I processed into this archive, please let me know. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-05 | Title : Dew Points and Severe Weather | Date : 05 Apr 05:09 AM | Votes : Good: 18 Bad: 12 +---------------------------------------------- The featured chart presents a quick analysis of near storm environment for the archive of NWS issued Tornado and Severe Thunderstorm warnings back to 1986 by month. The box and whisker plots help to visualize the range of values common during the issuance of the warning. In general, dew points are a bit higher for tornado warnings, which is expected as higher dew points indicate more energetic environments and perhaps higher relative humidities (lower cloud heights). For April, once the dew points reach the 50s severe weather appears to be more possible. Some severe weather occurred on Sunday over far southeast Iowa, where surface moisture was available (dew points much higher than the rest of the state). Higher dew points are expected to make their way north today with a warm front and our chances of severe weather will as well. > NWS Watch/Warning Summary for 05 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 13 0 | 0 0 0 0 0 | 3 Svr Tstorm 150 17 | 0 10 13 3 0 | 4 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: 154 Verified: 77 [50.0 %] Reduction of Size Versus County Based [67.2 %] Average Perimeter Ratio [34.1 %] Percentage of Warned Area Verified (15km) [31.1 %] Average Storm Based Warning Size [1185 sq km] Probability of Detection(higher is better)[0.79] False Alarm Ratio (lower is better) [0.50] Critical Success Index (higher is better) [0.44] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed Apr 7 11:01:07 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 7 Apr 2010 11:01:07 -0500 Subject: IEM Daily Bulletin Message-ID: <201004071601.o37G17Kj018920@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 07 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-06 | Title : Moisture surges with front | Date : 06 Apr 05:06 AM | Votes : Good: 23 Bad: 14 +---------------------------------------------- Very moist air has surged into southern Iowa this morning thanks to a staled out warm front that lifted into the state late last night. The featured time trace from the Bedford schoolnet shows the rapid increase in dew point yesterday afternoon and evening. The moisture and boundary sets the stage for more severe weather today before cooler air arrives tonight and tomorrow. > NWS Watch/Warning Summary for 06 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 6 4 | 0 2 2 0 0 | 1 Svr Tstorm 115 23 | 5 11 15 2 0 | 6 Fl Flood 2 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: 114 Verified: 67 [58.8 %] Reduction of Size Versus County Based [60.4 %] Average Perimeter Ratio [38.1 %] Percentage of Warned Area Verified (15km) [24.6 %] Average Storm Based Warning Size [1982 sq km] Probability of Detection(higher is better)[0.88] False Alarm Ratio (lower is better) [0.41] Critical Success Index (higher is better) [0.55] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Apr 8 11:01:07 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 8 Apr 2010 11:01:07 -0500 Subject: IEM Daily Bulletin Message-ID: <201004081601.o38G17e7004788@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 08 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-07 | Title : 34 degrees difference | Date : 07 Apr 05:10 AM | Votes : Good: 41 Bad: 3 +---------------------------------------------- 34 degrees difference was the separation of high temperatures between Iowa Falls (IFA) and Newton (TNU) on Tuesday. The large gradient in temperatures was thanks to a warm front that helped to develop strong thunderstorms Tuesday evening bringing very large hail and damaging winds. After a cool day today, temperatures are expected to warm into the weekend with plenty of sunshine expected. > NWS Watch/Warning Summary for 07 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 2 0 | 0 0 0 0 0 | 1 Svr Tstorm 98 0 | 0 0 0 0 0 | 3 Fl Flood 12 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: 100 Verified: 36 [36.0 %] Reduction of Size Versus County Based [61.7 %] Average Perimeter Ratio [31.5 %] Percentage of Warned Area Verified (15km) [10.4 %] Average Storm Based Warning Size [2174 sq km] Probability of Detection(higher is better)[0.77] False Alarm Ratio (lower is better) [0.64] Critical Success Index (higher is better) [0.33] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri Apr 9 11:01:13 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 9 Apr 2010 11:01:13 -0500 Subject: IEM Daily Bulletin Message-ID: <201004091601.o39G1Dmi028198@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 09 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-08 | Title : Record rainfall and temperatures | Date : 08 Apr 05:12 AM | Votes : Good: 29 Bad: 10 +---------------------------------------------- Roughly a week ago, some places in Iowa were setting records for warmest temperatures and then with the most recent storm, record rainfall. The featured chart looks at the frequency of having a record temperature around the days of having a record daily rainfall based on data for Ames. You can see how record maximum high temperatures frequently occur before a record rainfall as very warm air masses would imply stronger fronts, which should help produce higher rainfall amounts (as what recently happened). Record minimum highs (cold) also appear to be a common after a record rainfall. The climatology for any of the days shown on the chart would be one record. > NWS Watch/Warning Summary for 08 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 20 0 | 0 0 0 0 0 | 4 Svr Tstorm 59 0 | 0 0 0 0 0 | 1 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: 79 Verified: 40 [50.6 %] Reduction of Size Versus County Based [57.2 %] Average Perimeter Ratio [36.9 %] Percentage of Warned Area Verified (15km) [24.5 %] Average Storm Based Warning Size [2246 sq km] Probability of Detection(higher is better)[0.69] False Alarm Ratio (lower is better) [0.49] Critical Success Index (higher is better) [0.41] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat Apr 10 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 10 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004101601.o3AG14sB002384@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 10 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-09 | Title : Warnings by Hour | Date : 09 Apr 07:09 AM | Votes : Good: 31 Bad: 6 +---------------------------------------------- The featured image displays a climatology of NWS issued tornado and severe thunderstorm warnings by month and by hour. In general, these warnings are issued during the spring and summer months in the late afternoon into the evening. The month of June sticks out as the most active month and the winter months the least. > NWS Watch/Warning Summary for 09 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 1 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 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: 0 [0.0 %] Reduction of Size Versus County Based [73.1 %] Average Perimeter Ratio [0.0 %] Percentage of Warned Area Verified (15km) [0.0 %] Average Storm Based Warning Size [528 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] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Apr 11 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 11 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004111601.o3BG14SX026421@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 11 April 2010 > News +---------------------------------------------- | Title : Database server update | Date : 10 Apr 11:17 AM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/ +----------------------------------------------

The IEM relational and spatial database server was just updated to run the follow software releases.

If you find any applications behaving poorly, please let me know. The IEM's PostgreSQL database is around 300 GB in size and runs on a Dell PowerEdge T410 (Dual Quad-core Xeon E5520 2.27 GHz with 8 GB of memory). > Daily Feature No feature posted > NWS Watch/Warning Summary for 10 Apr 2010 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 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 No Warnings Issued -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Apr 12 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 12 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004121601.o3CG14BD022107@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 12 April 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 11 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 10 0 | 0 0 0 0 0 | 0 Fl Flood 2 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: 10 Verified: 4 [40.0 %] Reduction of Size Versus County Based [80.6 %] Average Perimeter Ratio [20.6 %] Percentage of Warned Area Verified (15km) [9.1 %] Average Storm Based Warning Size [2686 sq km] Probability of Detection(higher is better)[0.58] False Alarm Ratio (lower is better) [0.60] Critical Success Index (higher is better) [0.31] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Apr 13 11:02:01 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 13 Apr 2010 11:02:01 -0500 Subject: IEM Daily Bulletin Message-ID: <201004131602.o3DG21vQ026341@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 13 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-12 | Title : Warm 3 weeks | Date : 12 Apr 05:08 AM | Votes : Good: 25 Bad: 8 +---------------------------------------------- The past 21 days have seen the daily high temperature at or above 50 degrees for Ames. For the period, this is the first time it has happened since 1986! Warm weather looks to continue this week with no return to winter in immediate sight. Could we really go from winter to spring to summer without a relapse back into winter? > NWS Watch/Warning Summary for 12 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 1 0 | 0 0 0 0 0 | 0 Svr Tstorm 35 13 | 0 0 7 0 9 | 0 Fl Flood 4 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: 36 Verified: 22 [61.1 %] Reduction of Size Versus County Based [86.2 %] Average Perimeter Ratio [27.8 %] Percentage of Warned Area Verified (15km) [33.6 %] Average Storm Based Warning Size [759 sq km] Probability of Detection(higher is better)[0.87] False Alarm Ratio (lower is better) [0.39] Critical Success Index (higher is better) [0.56] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed Apr 14 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 14 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004141601.o3EG14SR030958@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 14 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-13 | Title : Dissimilar days | Date : 13 Apr 05:09 AM | Votes : Good: 20 Bad: 12 +---------------------------------------------- The featured graph compares the air temperature at the Pella AWOS with Iowa Falls since the first of the month. While these locations are only separated by over 50 miles, the displayed numbers highlight a number of days this month were the high temperatures have been very different. The largest of these differences occurred the previous Tuesday thanks to a strong warm front bisecting the state. A similar situation happened on Monday with roughly the same parts of the state experiencing the warm and cool weather. Everyone is expected to experience the warm weather today with highs near 80! > NWS Watch/Warning Summary for 13 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 3 0 | 0 0 0 0 0 | 0 Svr Tstorm 34 0 | 0 0 0 0 0 | 1 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: 37 Verified: 16 [43.2 %] Reduction of Size Versus County Based [71.4 %] Average Perimeter Ratio [30.5 %] Percentage of Warned Area Verified (15km) [12.3 %] Average Storm Based Warning Size [3238 sq km] Probability of Detection(higher is better)[0.81] False Alarm Ratio (lower is better) [0.57] Critical Success Index (higher is better) [0.39] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Apr 15 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 15 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004151601.o3FG14O6032524@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 15 April 2010 > News +---------------------------------------------- | Title : March AWOS data uploaded | Date : 14 Apr 12:28 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/request/awos/1min.php +---------------------------------------------- The one minute interval Iowa AWOS data for March 2010 has been uploaded to the IEM. This dataset is kindly provided on a monthly basis by the Iowa Department of Transportation.

I added some code that uses these one minute observations to correct previously IEM computed daily values of high and low temperature along with precipitation. Since the AWOS sites do not produce daily summary messages like the ASOS sites do, the IEM attempts to make its best estimate based on the 5-10 minute interval data we get in real-time. In general, these corrections are a mere degree or two and some small adjustments to precipitation totals. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-14 | Title : A bit behind last year and average | Date : 14 Apr 05:09 AM | Votes : Good: 23 Bad: 8 +---------------------------------------------- The featured graph displays an IEM estimate of average statewide precipitation for this year, last, and climatology. This year is shown to be a bit below both climatology and last year. The lack of really big rainfall events so far this year have helped to keep high impact flooding events to a minimum after the big snow melt. A front with precipitation is on the doorstep of the state this morning and bring showers to the state today. > NWS Watch/Warning Summary for 14 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 23 0 | 0 0 0 0 0 | 0 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: 23 Verified: 2 [8.7 %] Reduction of Size Versus County Based [92.5 %] Average Perimeter Ratio [19.3 %] Percentage of Warned Area Verified (15km) [3.8 %] Average Storm Based Warning Size [827 sq km] Probability of Detection(higher is better)[0.75] False Alarm Ratio (lower is better) [0.91] Critical Success Index (higher is better) [0.08] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri Apr 16 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 16 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004161601.o3GG14uA023558@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 16 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-15 | Title : Warm enough to plant corn | Date : 15 Apr 05:10 AM | Votes : Good: 41 Bad: 10 +---------------------------------------------- The featured time series is daily average soil temperature at a four inch depth from the Ames ISUAG site. The warm weather this April has helped push soil temperatures well above the important 50 degree level, which is roughly how warm the soil needs to be for corn seeds to sprout and grow. The danger can be seen by the climatology value, which is only in the mid 40s. A stretch of cold weather would cool off the soil and hurt a corn seed's development. The actual forecast keeps high temperatures in the 60s, so no worries in sight! > NWS Watch/Warning Summary for 15 Apr 2010 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 15 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat Apr 17 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 17 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004171601.o3HG14A0001365@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 17 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-16 | Title : Only a few swings this year | Date : 16 Apr 05:07 AM | Votes : Good: 13 Bad: 13 +---------------------------------------------- The featured chart displays the IEM computed number of temperature swings during the springtime season between 26 and 38 degrees. The algorithm counts the number of times the temperature exceeded 38 degrees and then was cooler than 26 degrees. You might consider these as freeze and thaw cycles. Anyway, for 2010 we have seen very few of these temperature swings (just 5 in fact) while the long term average value is around 17. We have warmed up and have not looked back! > NWS Watch/Warning Summary for 16 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 23 0 | 0 0 0 0 0 | 1 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: 23 Verified: 15 [65.2 %] Reduction of Size Versus County Based [49.9 %] Average Perimeter Ratio [34.7 %] Percentage of Warned Area Verified (15km) [21.8 %] Average Storm Based Warning Size [4298 sq km] Probability of Detection(higher is better)[0.86] False Alarm Ratio (lower is better) [0.35] Critical Success Index (higher is better) [0.59] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Apr 18 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 18 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004181601.o3IG14j5027485@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 18 April 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 17 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 6 0 | 0 0 0 0 0 | 0 Svr Tstorm 11 0 | 0 0 0 0 0 | 0 Fl Flood 22 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: 17 Verified: 4 [23.5 %] Reduction of Size Versus County Based [71.1 %] Average Perimeter Ratio [11.8 %] Percentage of Warned Area Verified (15km) [5.4 %] Average Storm Based Warning Size [2143 sq km] Probability of Detection(higher is better)[0.83] False Alarm Ratio (lower is better) [0.76] Critical Success Index (higher is better) [0.22] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Apr 19 11:01:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 19 Apr 2010 11:01:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004191601.o3JG14Ml028711@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 19 April 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 18 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 1 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: 3 Verified: 0 [0.0 %] Reduction of Size Versus County Based [93.2 %] Average Perimeter Ratio [14.5 %] Percentage of Warned Area Verified (15km) [0.0 %] Average Storm Based Warning Size [656 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] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Apr 20 11:01:05 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 20 Apr 2010 11:01:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201004201601.o3KG15VI003835@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 20 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-19 | Title : Still have to worry about freezes | Date : 19 Apr 05:10 AM | Votes : Good: 38 Bad: 7 +---------------------------------------------- Low temperatures on Sunday dipped below freezing in some locations as indicated by the featured plot of AWOS low temperatures. While climatology has our average low temperature around 40 degrees, the calendar only has us in mid April, which is still a few weeks away from common departure of worrying about freezing temperatures. The forecast for this week looks to continue our warm and dry days with rain holding off until Thursday. > NWS Watch/Warning Summary for 19 Apr 2010 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: 0 [0.0 %] Reduction of Size Versus County Based [95.9 %] Average Perimeter Ratio [8.5 %] Percentage of Warned Area Verified (15km) [0.0 %] Average Storm Based Warning Size [725 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] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed Apr 21 11:00:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 21 Apr 2010 11:00:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004211600.o3LG0490030468@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 21 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-20 | Title : Warm April Nights | Date : 20 Apr 05:07 AM | Votes : Good: 24 Bad: 11 +---------------------------------------------- The featured graph displays the number of days during this and past Aprils that the low temperature was over 10 degrees above average for Ames. This year has seen 8 such days already doubling the long term average of just 4 days. Average lows are in the lower 40s and the forecast has some more 10+ degree warmer than average lows for the end of the week along with some rain. > NWS Watch/Warning Summary for 20 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 5 0 | 0 0 0 0 0 | 0 Svr Tstorm 19 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: 24 Verified: 5 [20.8 %] Reduction of Size Versus County Based [86.2 %] Average Perimeter Ratio [18.6 %] Percentage of Warned Area Verified (15km) [7.6 %] Average Storm Based Warning Size [2014 sq km] Probability of Detection(higher is better)[0.43] False Alarm Ratio (lower is better) [0.79] Critical Success Index (higher is better) [0.16] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Apr 22 11:00:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 22 Apr 2010 11:00:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004221600.o3MG04ax004166@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 22 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-21 | Title : Mostly dry April | Date : 21 Apr 05:07 AM | Votes : Good: 40 Bad: 5 +---------------------------------------------- Outside of a couple of heavy rainfall events affecting parts of northern Iowa, April has been on the dry side of average. The featured chart displays the daily rainfall reports from the Ames Airport sensor. The past two weeks have been mostly dry and allowed spring field work to progress at a rapid pace. A couple more dry days are expected before rain arrives on Thursday night and sticks around into the weekend. > NWS Watch/Warning Summary for 21 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 3 0 | 0 0 0 0 0 | 1 Svr Tstorm 42 0 | 0 0 0 0 0 | 1 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 [86.1 %] Average Perimeter Ratio [15.0 %] Percentage of Warned Area Verified (15km) [15.3 %] Average Storm Based Warning Size [1485 sq km] Probability of Detection(higher is better)[0.79] False Alarm Ratio (lower is better) [0.64] Critical Success Index (higher is better) [0.32] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri Apr 23 11:00:06 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 23 Apr 2010 11:00:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201004231600.o3NG06hS020869@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 23 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-22 | Title : Hourly precip rates | Date : 22 Apr 05:11 AM | Votes : Good: 22 Bad: 11 +---------------------------------------------- The featured graph looks at the frequency of hourly precipitation rates over a quarter of an inch (red bars) and the largest amount of precipitation reported during an hour (blue bars) from the Des Moines Airport since 1973. The lowest and less frequent rates occur during the 1 PM hour with maximums in the late afternoon and very early morning around sunrise. The heavy rainfall events tend to occur in the late afternoon forced by peak solar heating and early morning forced by low level jet activity. The middle of the day tends to be a lull in the forcing activity. For Iowa, peak rainfall rates usually do not exceed around 2 inches per hour. > NWS Watch/Warning Summary for 22 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 50 0 | 0 0 0 0 0 | 5 Svr Tstorm 107 0 | 0 0 0 0 0 | 0 Fl Flood 4 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: 156 Verified: 57 [36.5 %] Reduction of Size Versus County Based [73.4 %] Average Perimeter Ratio [24.1 %] Percentage of Warned Area Verified (15km) [17.1 %] Average Storm Based Warning Size [1658 sq km] Probability of Detection(higher is better)[0.85] False Alarm Ratio (lower is better) [0.63] Critical Success Index (higher is better) [0.34] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat Apr 24 11:00:07 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 24 Apr 2010 11:00:07 -0500 Subject: IEM Daily Bulletin Message-ID: <201004241600.o3OG075L002358@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 24 April 2010 > News +---------------------------------------------- | Title : 19 million hits | Date : 24 Apr 08:03 AM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/usage/ +---------------------------------------------- The IEM webfarm did 19 million web hits on Friday. This sets another milestone for traffic. 

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+

According to network flow reports, this traffic totaled 478 gigabytes. Most of the hits are against the various radar data services the IEM has. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-23 | Title : Severe weather returns | Date : 23 Apr 05:11 AM | Votes : Good: 31 Bad: 8 +---------------------------------------------- After a rather quite start to the severe weather season, a large storm system to our west will cross the plains today and this weekend bringing wide spread severe weather. The featured composite image is the Storm Prediction Center forecast for Friday and Saturday. Iowa is under a slight risk for both days with expansive moderate risk shown over the southern plains. > NWS Watch/Warning Summary for 23 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 29 0 | 0 0 0 1 0 | 9 Svr Tstorm 128 3 | 0 0 1 14 0 | 1 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: 146 Verified: 53 [36.3 %] Reduction of Size Versus County Based [69.4 %] Average Perimeter Ratio [27.0 %] Percentage of Warned Area Verified (15km) [12.8 %] Average Storm Based Warning Size [1896 sq km] Probability of Detection(higher is better)[0.83] False Alarm Ratio (lower is better) [0.64] Critical Success Index (higher is better) [0.34] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Apr 25 11:00:14 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 25 Apr 2010 11:00:14 -0500 Subject: IEM Daily Bulletin Message-ID: <201004251600.o3PG0ESF005368@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 25 April 2010 > News +---------------------------------------------- | Title : 22 million hits | Date : 25 Apr 07:53 AM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/usage/ +----------------------------------------------

It only took another day for the IEM webfarm to do another personal best! On Saturday, the web farm did 22 million hits. Previous milestones are: 

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+

These hits amounted to 814 GB of internet traffic. > Daily Feature No feature posted > NWS Watch/Warning Summary for 24 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 120 0 | 0 0 0 0 0 | 13 Svr Tstorm 273 7 | 0 0 3 4 9 | 0 Fl Flood 30 1 | 0 0 0 0 3 | 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: 389 Verified: 130 [33.4 %] Reduction of Size Versus County Based [61.6 %] Average Perimeter Ratio [36.9 %] Percentage of Warned Area Verified (15km) [16.8 %] Average Storm Based Warning Size [1904 sq km] Probability of Detection(higher is better)[0.78] False Alarm Ratio (lower is better) [0.67] Critical Success Index (higher is better) [0.31] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Apr 26 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 26 Apr 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201004261600.o3QG08gj010655@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 26 April 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 25 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 19 0 | 0 0 0 0 0 | 3 Svr Tstorm 86 0 | 0 0 0 0 0 | 3 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: 103 Verified: 47 [45.6 %] Reduction of Size Versus County Based [71.2 %] Average Perimeter Ratio [28.4 %] Percentage of Warned Area Verified (15km) [23.3 %] Average Storm Based Warning Size [1272 sq km] Probability of Detection(higher is better)[0.89] False Alarm Ratio (lower is better) [0.54] Critical Success Index (higher is better) [0.43] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Apr 27 11:00:05 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 27 Apr 2010 11:00:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201004271600.o3RG05Yp006270@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 27 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-26 | Title : Wet weekend for most | Date : 26 Apr 05:07 AM | Votes : Good: 40 Bad: 10 +---------------------------------------------- A large storm system that brought severe weather to the southern plains also brought heavy rainfall to Iowa. The featured precipitation estimates for the past 3 days show some locations pushing 5+ inch totals. Some more rainfall is expected today, but the heaviest totals shouldn't fall in the same location. Another large storm system is expected by the end of the week. > NWS Watch/Warning Summary for 26 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 7 0 | 0 0 0 0 0 | 0 Svr Tstorm 23 0 | 0 0 0 0 0 | 0 Fl Flood 2 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: 30 Verified: 12 [40.0 %] Reduction of Size Versus County Based [60.7 %] Average Perimeter Ratio [18.1 %] Percentage of Warned Area Verified (15km) [12.9 %] Average Storm Based Warning Size [1930 sq km] Probability of Detection(higher is better)[0.70] False Alarm Ratio (lower is better) [0.60] Critical Success Index (higher is better) [0.34] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed Apr 28 11:00:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 28 Apr 2010 11:00:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201004281600.o3SG04gU003780@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 28 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-27 | Title : Only slim chances of freezing temps | Date : 27 Apr 05:07 AM | Votes : Good: 35 Bad: 9 +---------------------------------------------- As we close out the final few days of April, our chances of having sub freezing temperatures continue to approach zero. We are still a week or two away from being completely clear as shown by the featured chart. It displays the frequency of having a sub freezing or sub 29 degree temperature. The forecast for the next week keeps us well above freezing after a chilly night tonight. > NWS Watch/Warning Summary for 27 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 12 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: 12 Verified: 7 [58.3 %] Reduction of Size Versus County Based [71.7 %] Average Perimeter Ratio [42.6 %] Percentage of Warned Area Verified (15km) [17.6 %] Average Storm Based Warning Size [1682 sq km] Probability of Detection(higher is better)[0.44] False Alarm Ratio (lower is better) [0.42] Critical Success Index (higher is better) [0.33] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Apr 29 11:00:03 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 29 Apr 2010 11:00:03 -0500 Subject: IEM Daily Bulletin Message-ID: <201004291600.o3TG033P025436@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 29 April 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-28 | Title : Before and after the final freeze | Date : 28 Apr 05:10 AM | Votes : Good: 24 Bad: 12 +---------------------------------------------- Temperatures in some locations this morning in eastern Iowa are hovering around freezing, but the rest of the state looks to miss out thanks to a slight southerly breeze and higher dew points. The featured chart presents a composite of air temperature and dewpoint for the 96 hours around the final sub 32F temperature measured at the Des Moines Airport. The plot perhaps indicates the importance of having low dew points for the period up until the cold temperature. The dry air helps the atmosphere to cool off efficiently, allowing temperatures to drop in the early morning hours (-6 to 0 hour). The moisture increase thereafter is probably showing the effect of having a high pressure system pass to the east and southerly flow returning. > NWS Watch/Warning Summary for 28 Apr 2010 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 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: 5 Verified: 2 [40.0 %] Reduction of Size Versus County Based [69.9 %] Average Perimeter Ratio [46.2 %] Percentage of Warned Area Verified (15km) [9.8 %] Average Storm Based Warning Size [1684 sq km] Probability of Detection(higher is better)[0.50] False Alarm Ratio (lower is better) [0.60] Critical Success Index (higher is better) [0.29] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri Apr 30 11:00:05 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 30 Apr 2010 11:00:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201004301600.o3UG05hR026512@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 30 April 2010 > News +---------------------------------------------- | Title : ASOS download improvements | Date : 29 Apr 12:56 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/request/download.phtml +----------------------------------------------

The IEM application that allows you to download our archive of ASOS/AWOS observations has been improved slightly. The changes include:

  • You can now request multi-years worth of data
  • The interface allows selection of dates prior to 1970 as the IEM has some data prior to then.
  • Added the option to download sky coverage and amount data.
  • Added the option to download the raw METAR observation.
  • Removed the useless option of specifying 20 minute observations as that does not really apply. Your download gets whatever archive the IEM has.
  • Removed the "space delimited" option as it never actually worked and is a bad idea to begin with!

We keep back-filling our archive as data sources are found, so if you attempt to download some data and get nothing, please let me know. I'm also reprocessing some data to get the sky coverage values archived along with the raw METARs. Previously, this data was not saved. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-29 | Title : A bit blowy outside | Date : 29 Apr 05:08 AM | Votes : Good: 33 Bad: 4 +---------------------------------------------- The featured analysis displays observed peak wind gusts so far this Thursday morning. A strong storm system to our west is gathering this morning and will be slowly working its way east today and tomorrow. Wind speeds in the lower part of the atmosphere are very strong and will mix down to the surface increasing the values shown on the plot today. The storm system is expected to also bring severe weather to Iowa late this evening and on Friday. > NWS Watch/Warning Summary for 29 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 13 2 | 0 0 0 8 0 | 1 Svr Tstorm 79 16 | 2 0 14 20 0 | 2 Fl Flood 2 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: 86 Verified: 34 [39.5 %] Reduction of Size Versus County Based [65.7 %] Average Perimeter Ratio [41.6 %] Percentage of Warned Area Verified (15km) [19.3 %] Average Storm Based Warning Size [1397 sq km] Probability of Detection(higher is better)[0.73] False Alarm Ratio (lower is better) [0.60] Critical Success Index (higher is better) [0.34] -------------- next part -------------- An HTML attachment was scrubbed... URL: