From akrherz at iastate.edu Sat May 1 11:00:09 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 1 May 2010 11:00:09 -0500 Subject: IEM Daily Bulletin Message-ID: <201005011600.o41G09uq025621@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 01 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-04-30 | Title : Tornado threat to end April | Date : 30 Apr 08:06 AM | Votes : Good: 21 Bad: 10 +---------------------------------------------- The first four months of the year have been very quiet for tornado activity in Iowa. The Storm Prediction Center has a slight risk of severe weather out for Friday with considerable tornado probabilities forecasted for this afternoon as shown by the featured map. Storms should get going early this afternoon and then race eastward at over 50 miles per hour. All of this nasty weather will sweep east and leave us with a very nice weekend to start off May! > NWS Watch/Warning Summary for 30 Apr 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 71 0 | 0 0 0 0 0 | 6 Svr Tstorm 144 6 | 5 10 8 0 0 | 2 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: 199 Verified: 64 [32.2 %] Reduction of Size Versus County Based [66.2 %] Average Perimeter Ratio [33.9 %] Percentage of Warned Area Verified (15km) [13.2 %] Average Storm Based Warning Size [1881 sq km] Probability of Detection(higher is better)[0.81] False Alarm Ratio (lower is better) [0.68] Critical Success Index (higher is better) [0.30] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun May 2 11:00:13 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 2 May 2010 11:00:13 -0500 Subject: IEM Daily Bulletin Message-ID: <201005021600.o42G0Di3000587@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 02 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 01 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 93 0 | 0 0 0 0 0 | 11 Svr Tstorm 165 0 | 0 0 0 0 0 | 1 Fl Flood 42 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: 255 Verified: 45 [17.6 %] Reduction of Size Versus County Based [69.9 %] Average Perimeter Ratio [25.1 %] Percentage of Warned Area Verified (15km) [7.3 %] Average Storm Based Warning Size [1701 sq km] Probability of Detection(higher is better)[0.82] False Alarm Ratio (lower is better) [0.82] Critical Success Index (higher is better) [0.17] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon May 3 11:00:07 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 3 May 2010 11:00:07 -0500 Subject: IEM Daily Bulletin Message-ID: <201005031600.o43G073j026410@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 03 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 02 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 44 0 | 0 0 0 0 0 | 3 Svr Tstorm 96 2 | 0 0 2 0 0 | 3 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: 138 Verified: 26 [18.8 %] Reduction of Size Versus County Based [65.1 %] Average Perimeter Ratio [31.3 %] Percentage of Warned Area Verified (15km) [8.6 %] Average Storm Based Warning Size [1475 sq km] Probability of Detection(higher is better)[0.63] False Alarm Ratio (lower is better) [0.81] Critical Success Index (higher is better) [0.17] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue May 4 11:00:06 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 4 May 2010 11:00:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201005041600.o44G068N016335@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 04 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-03 | Title : Freeze free April for some | Date : 03 May 06:00 AM | Votes : Good: 27 Bad: 11 +---------------------------------------------- The featured map displays the lowest temperature reported by the ASOS/AWOS sensors for the month of April as computed by the IEM. Des Moines failed to report a freezing temperature for the month, which is the first time that has happened since 1941 (also previously happened in 1925). The warm weather has allowed farmers to get a very good jump on the spring planting season. > NWS Watch/Warning Summary for 03 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 7 0 | 0 0 0 0 0 | 1 Svr Tstorm 38 0 | 0 0 0 0 0 | 1 Fl Flood 17 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 [64.7 %] Average Perimeter Ratio [36.5 %] Percentage of Warned Area Verified (15km) [18.5 %] Average Storm Based Warning Size [1545 sq km] Probability of Detection(higher is better)[0.56] False Alarm Ratio (lower is better) [0.64] Critical Success Index (higher is better) [0.28] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed May 5 11:00:06 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 5 May 2010 11:00:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201005051600.o45G06lE010001@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 05 May 2010 > News +---------------------------------------------- | Title : April AWOS data uploaded | Date : 05 May 08:40 AM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/request/awos/1min.php +----------------------------------------------

The one minute interval Iowa AWOS data for April has been uploaded to the IEM data coffers. This data is kindly provided to us each month by the Iowa Department of Transportation. +---------------------------------------------- | Title : April ASOS data uploaded | Date : 04 May 02:37 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/request/asos/1min.phtml +----------------------------------------------

The one minute interval Iowa ASOS data for April 2010 has been uploaded to the IEM. Data for Moline, Sioux Falls, and Omaha is included as well. There are over 60 million observations in this archive dating back to the year 2000. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-04 | Title : Little storm, big gusts | Date : 04 May 06:07 AM | Votes : Good: 27 Bad: 4 +---------------------------------------------- A rather weak area of showers was able to produce strong winds Monday afternoon. The featured time series from Atlantic shows only weak NEXRAD returns producing wind gusts over 50 mph. The storms were able to push faster winds aloft to the surface via the rain and virga falling. This event was not isolated and occurred over a good portion of southwestern Iowa. > NWS Watch/Warning Summary for 04 May 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 29 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: 36 Verified: 27 [75.0 %] Reduction of Size Versus County Based [64.8 %] Average Perimeter Ratio [37.4 %] Percentage of Warned Area Verified (15km) [31.5 %] Average Storm Based Warning Size [2413 sq km] Probability of Detection(higher is better)[0.64] False Alarm Ratio (lower is better) [0.25] Critical Success Index (higher is better) [0.53] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu May 6 11:00:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 6 May 2010 11:00:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201005061600.o46G04Jn009151@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 06 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-05 | Title : Cold weather to worry about | Date : 05 May 05:08 AM | Votes : Good: 19 Bad: 3 +---------------------------------------------- The featured map is NWS forecasted low temperatures Sunday morning. As it stands now, temperatures are expected to be just above freezing with no widespread frost. The calendar will be in the second week of May, which is about the time we stop worrying about frosty weather. After high temperatures in the 80s on Tuesday, we will be back in 60s for highs today and even colder than that on Friday and Saturday. > NWS Watch/Warning Summary for 05 May 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 17 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: 17 Verified: 9 [52.9 %] Reduction of Size Versus County Based [61.8 %] Average Perimeter Ratio [37.9 %] Percentage of Warned Area Verified (15km) [23.8 %] Average Storm Based Warning Size [1378 sq km] Probability of Detection(higher is better)[0.95] False Alarm Ratio (lower is better) [0.47] Critical Success Index (higher is better) [0.52] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri May 7 11:00:05 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 7 May 2010 11:00:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201005071600.o47G05S6021979@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 07 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-06 | Title : Windy May | Date : 06 May 06:09 AM | Votes : Good: 37 Bad: 9 +---------------------------------------------- The month of May has started off on the windy side as shown by the featured graph of hourly winds reported by the Ames Airport. The GFS model forecast for the next two days is also shown and after a bit of a relax in the winds today, Friday will again be blustery as well. The plot also shows the wind direction (dots) on Friday will be out of the northwest helping to bring in much cooler air for the weekend. > NWS Watch/Warning Summary for 06 May 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 67 0 | 0 0 0 1 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: 61 Verified: 35 [57.4 %] Reduction of Size Versus County Based [71.6 %] Average Perimeter Ratio [26.0 %] Percentage of Warned Area Verified (15km) [24.0 %] Average Storm Based Warning Size [1772 sq km] Probability of Detection(higher is better)[0.74] False Alarm Ratio (lower is better) [0.43] Critical Success Index (higher is better) [0.48] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat May 8 11:00:05 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 8 May 2010 11:00:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201005081600.o48G05N8010031@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 08 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-07 | Title : The week after a high of 80 | Date : 07 May 05:34 AM | Votes : Good: 37 Bad: 5 +---------------------------------------------- It was just on Tuesday that high temperatures soared into the 80s here in Ames. The featured chart looks at the observed frequencies of high temperatures above 80 and below 60 after a day with a high above 80. The climatological occurrence of having a sub 60 and above 80 day in May is shown as well (flat lines). With forecasted highs on Friday and Saturday in the 50s (day 3 and day 4), the chart would indicate this is rather rare. Our average highs are in the upper 60s, so we will be well below normal with some locations struggling to even reach 50 on Saturday. > NWS Watch/Warning Summary for 07 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 7 0 | 0 0 0 0 0 | 1 Svr Tstorm 66 0 | 0 1 0 0 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: 72 Verified: 39 [54.2 %] Reduction of Size Versus County Based [49.4 %] Average Perimeter Ratio [40.2 %] Percentage of Warned Area Verified (15km) [24.2 %] Average Storm Based Warning Size [2086 sq km] Probability of Detection(higher is better)[0.77] False Alarm Ratio (lower is better) [0.46] Critical Success Index (higher is better) [0.47] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun May 9 11:00:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 9 May 2010 11:00:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201005091600.o49G04kd017728@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 09 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 08 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 2 0 | 0 0 0 0 0 | 0 Svr Tstorm 28 0 | 0 0 0 0 0 | 0 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: 30 Verified: 14 [46.7 %] Reduction of Size Versus County Based [66.7 %] Average Perimeter Ratio [37.3 %] Percentage of Warned Area Verified (15km) [20.6 %] Average Storm Based Warning Size [1579 sq km] Probability of Detection(higher is better)[0.78] False Alarm Ratio (lower is better) [0.53] Critical Success Index (higher is better) [0.41] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon May 10 11:00:04 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 10 May 2010 11:00:04 -0500 Subject: IEM Daily Bulletin Message-ID: <201005101600.o4AG04t0024040@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 10 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 09 May 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 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: 4 Verified: 2 [50.0 %] Reduction of Size Versus County Based [54.6 %] Average Perimeter Ratio [59.6 %] Percentage of Warned Area Verified (15km) [20.6 %] Average Storm Based Warning Size [1368 sq km] Probability of Detection(higher is better)[0.50] False Alarm Ratio (lower is better) [0.50] Critical Success Index (higher is better) [0.33] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue May 11 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 11 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005111600.o4BG08QN020852@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 11 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-10 | Title : A bit frosty for May | Date : 10 May 05:10 AM | Votes : Good: 29 Bad: 2 +---------------------------------------------- Clear skies and calm winds helped temperatures to drop to frosty levels Sunday morning as shown by the featured IEM analysis of low temperatures. The full impacts of this cold event will take a bit to be determined, but the corn crop was probably not far enough developed to be significantly impacted. Trees and flowers took the brunt of this cold weather with more cool weather expected this week. The big story will be the heavy rainfall along with highs only in the 50s for the next few days. > NWS Watch/Warning Summary for 10 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 70 0 | 0 0 0 0 0 | 4 Svr Tstorm 85 0 | 0 0 0 0 0 | 1 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: 154 Verified: 64 [41.6 %] Reduction of Size Versus County Based [62.2 %] Average Perimeter Ratio [40.6 %] Percentage of Warned Area Verified (15km) [20.8 %] Average Storm Based Warning Size [2178 sq km] Probability of Detection(higher is better)[0.86] False Alarm Ratio (lower is better) [0.58] Critical Success Index (higher is better) [0.39] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed May 12 11:00:03 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 12 May 2010 11:00:03 -0500 Subject: IEM Daily Bulletin Message-ID: <201005121600.o4CG03Z5002590@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 12 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-11 | Title : Day 5 of 6 below 60 degrees? | Date : 11 May 05:13 AM | Votes : Good: 19 Bad: 4 +---------------------------------------------- The featured graph of daily high and low temperatures for Ames shows a period of six days with the high temperature below 60 degrees. A model's forecast for today and tomorrow have yet to verify, but if it does, this period would tie a record for consecutive days below 60 in May. The last time this has happened in Ames was all the way back in 1931. Wet conditions will also persist with even heavier rain expected by the end of the week. > NWS Watch/Warning Summary for 11 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 7 0 | 0 0 0 0 0 | 2 Svr Tstorm 6 0 | 0 0 0 0 0 | 1 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: 12 Verified: 3 [25.0 %] Reduction of Size Versus County Based [71.5 %] Average Perimeter Ratio [27.1 %] Percentage of Warned Area Verified (15km) [19.4 %] Average Storm Based Warning Size [1127 sq km] Probability of Detection(higher is better)[0.69] False Alarm Ratio (lower is better) [0.75] Critical Success Index (higher is better) [0.23] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu May 13 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 13 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005131600.o4DG08vP025438@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 13 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-12 | Title : Soil temps below average | Date : 12 May 05:10 AM | Votes : Good: 25 Bad: 4 +---------------------------------------------- Our recent stretch of cool weather has cooled off soils back below climatological average for the first time in the past few months. The featured graph from the Ames ISUAG site show daily average four inch depth soil temperatures around 50 degrees, which is an important numbers some crops care about for growth. Any planted soybean fields are definitely not enjoying this weather. To warm things back up, we need clear skies and warmer air temperatures. Both of which appear to be returning next week. > NWS Watch/Warning Summary for 12 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 23 0 | 0 0 0 0 0 | 2 Svr Tstorm 144 9 | 0 7 7 5 0 | 5 Fl Flood 36 1 | 0 1 2 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: 155 Verified: 74 [47.7 %] Reduction of Size Versus County Based [61.8 %] Average Perimeter Ratio [38.0 %] Percentage of Warned Area Verified (15km) [21.5 %] Average Storm Based Warning Size [1952 sq km] Probability of Detection(higher is better)[0.73] False Alarm Ratio (lower is better) [0.52] Critical Success Index (higher is better) [0.40] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri May 14 11:00:06 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 14 May 2010 11:00:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201005141600.o4EG06GO014629@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 14 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-13 | Title : Wednesday rainout | Date : 13 May 05:57 AM | Votes : Good: 21 Bad: 1 +---------------------------------------------- The featured map displays estimated rainfall for Wednesday showing some spots in the state picking up over 2 inches. Hail up to quarter size was also reported with the stronger storms. Thankfully, our stretch of cool and wet weather is going to change with the sun returning and highs back near 70. > NWS Watch/Warning Summary for 13 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 11 0 | 0 0 0 0 0 | 1 Svr Tstorm 85 0 | 0 0 1 0 0 | 7 Fl Flood 12 0 | 1 1 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: 38 [40.4 %] Reduction of Size Versus County Based [56.8 %] Average Perimeter Ratio [43.9 %] Percentage of Warned Area Verified (15km) [18.8 %] Average Storm Based Warning Size [2712 sq km] Probability of Detection(higher is better)[0.84] False Alarm Ratio (lower is better) [0.60] Critical Success Index (higher is better) [0.38] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat May 15 11:00:15 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 15 May 2010 11:00:15 -0500 Subject: IEM Daily Bulletin Message-ID: <201005151600.o4FG0FIK003796@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 15 May 2010 > News +---------------------------------------------- | Title : 23 million hits | Date : 15 May 06:15 AM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/usage/ +---------------------------------------------- The IEM web farm did 23 million hits on Friday, which is a new traffic milestone for the website. Previous milestones include: 

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+
> Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-14 | Title : 7 days below 60! | Date : 14 May 06:07 AM | Votes : Good: 33 Bad: 4 +---------------------------------------------- The abnormally cool stretch of weather ended up lasting a full week for Ames with high temperatures not reaching 60 degrees. According to IEM data, this sets a record for consecutive days below 60 in May. The featured chart displays the monthly records for Ames and the most recent year the record was set or tied. During the winter months, a large number of years had the entire month below 60. It is interesting to see that July never has had a high temperature below 60 for Ames since 1893. Temperatures will approach 70 today! > NWS Watch/Warning Summary for 14 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 36 0 | 0 0 0 0 0 | 1 Svr Tstorm 318 0 | 0 0 0 0 0 | 6 Fl Flood 61 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: 351 Verified: 141 [40.2 %] Reduction of Size Versus County Based [73.2 %] Average Perimeter Ratio [29.4 %] Percentage of Warned Area Verified (15km) [17.1 %] Average Storm Based Warning Size [1438 sq km] Probability of Detection(higher is better)[0.85] False Alarm Ratio (lower is better) [0.60] Critical Success Index (higher is better) [0.38] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun May 16 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 16 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005161600.o4GG08Lc009048@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 16 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 15 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 18 0 | 0 0 0 0 0 | 0 Svr Tstorm 118 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: 136 Verified: 57 [41.9 %] Reduction of Size Versus County Based [77.2 %] Average Perimeter Ratio [25.5 %] Percentage of Warned Area Verified (15km) [20.8 %] Average Storm Based Warning Size [1041 sq km] Probability of Detection(higher is better)[0.78] False Alarm Ratio (lower is better) [0.58] Critical Success Index (higher is better) [0.38] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon May 17 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 17 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005171600.o4HG08rH001837@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 17 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 16 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 17 0 | 0 0 0 0 0 | 0 Svr Tstorm 145 0 | 0 0 0 0 0 | 2 Fl Flood 44 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: 160 Verified: 65 [40.6 %] Reduction of Size Versus County Based [71.3 %] Average Perimeter Ratio [33.4 %] Percentage of Warned Area Verified (15km) [18.8 %] Average Storm Based Warning Size [1501 sq km] Probability of Detection(higher is better)[0.84] False Alarm Ratio (lower is better) [0.59] Critical Success Index (higher is better) [0.38] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue May 18 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 18 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005181600.o4IG08mO001566@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 18 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-17 | Title : Need a break from last week | Date : 17 May 05:23 AM | Votes : Good: 22 Bad: 3 +---------------------------------------------- The featured calendar displays daily rainfall reports from the Ames Airport sensor. Besides being very cool for May, last week was also quite wet halting spring planting progress. A few stray showers are visiting this state this morning and so will be leaving us for a wonderful week in store. Sunshine and warmer temperature are just what Iowa farmers need to get back on schedule. Temperatures are expected to approach 80 by next weekend. > NWS Watch/Warning Summary for 17 May 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 182 0 | 0 0 0 0 0 | 6 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: 184 Verified: 62 [33.7 %] Reduction of Size Versus County Based [79.9 %] Average Perimeter Ratio [28.4 %] Percentage of Warned Area Verified (15km) [13.0 %] Average Storm Based Warning Size [1646 sq km] Probability of Detection(higher is better)[0.80] False Alarm Ratio (lower is better) [0.66] Critical Success Index (higher is better) [0.31] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed May 19 11:00:07 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 19 May 2010 11:00:07 -0500 Subject: IEM Daily Bulletin Message-ID: <201005191600.o4JG07WB027519@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 19 May 2010 > News +---------------------------------------------- | Title : Brief Server Outage | Date : 18 May 12:55 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/ +---------------------------------------------- The IEM suffered a brief server outage around 12:15 PM on Tuesday as one of the important machines in the server cluster had a kernel panic and failed. Unfortunately, not everything the IEM has going is redundant and this particular machine runs memcached, which when fails, makes lots of IEM services very grouchy.

I'll see about preventing this cascade failure from happening in the future. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-18 | Title : To have 7 straight days | Date : 18 May 06:15 AM | Votes : Good: 18 Bad: 3 +---------------------------------------------- The featured chart looks at the daily probability that the day is included in at least a 7 consecutive day dry period based on data for Ames. The lowest values on the chart are found during the end of May and early June. Our actual weather will attempt such a streak, but slight chances of showers on Thursday may ruin it. > NWS Watch/Warning Summary for 18 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 41 0 | 0 0 0 0 0 | 3 Svr Tstorm 81 0 | 0 0 0 0 0 | 2 Fl Flood 18 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: 118 Verified: 37 [31.4 %] Reduction of Size Versus County Based [81.5 %] Average Perimeter Ratio [21.3 %] Percentage of Warned Area Verified (15km) [17.1 %] Average Storm Based Warning Size [1458 sq km] Probability of Detection(higher is better)[0.78] False Alarm Ratio (lower is better) [0.69] Critical Success Index (higher is better) [0.29] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu May 20 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 20 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005201600.o4KG08g4008596@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 20 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-19 | Title : Only one really warm day | Date : 19 May 05:23 AM | Votes : Good: 14 Bad: 4 +---------------------------------------------- The featured chart displays the daily high and low temperature percentile from Ames for May. only one day this month has seen a very warm high temperature with the rest near 50 or below and sometimes well below! There is still hope that 80s will arrive this weekend, which would be a bit above average > NWS Watch/Warning Summary for 19 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 44 0 | 0 0 0 0 0 | 3 Svr Tstorm 76 0 | 0 0 0 0 0 | 1 Fl Flood 8 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: 30 [26.3 %] Reduction of Size Versus County Based [69.9 %] Average Perimeter Ratio [29.8 %] Percentage of Warned Area Verified (15km) [11.8 %] Average Storm Based Warning Size [2017 sq km] Probability of Detection(higher is better)[0.84] False Alarm Ratio (lower is better) [0.74] Critical Success Index (higher is better) [0.25] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri May 21 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 21 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005211600.o4LG088j014286@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 21 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-20 | Title : Explains our May | Date : 20 May 05:11 AM | Votes : Good: 31 Bad: 1 +---------------------------------------------- This featured wind rose is for Ames so far this May and provides insight into why we have been on the cool side of normal for temperatures. The shaded area highlights the lack of south and southwesterly winds. These winds are typically warm whereas easterly and northwesterly are cool. A return of these warm winds are expected this weekend with highs climbing well into the 80s! > NWS Watch/Warning Summary for 20 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 16 0 | 0 0 0 0 0 | 1 Svr Tstorm 120 0 | 0 0 0 0 0 | 4 Fl Flood 21 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: 136 Verified: 35 [25.7 %] Reduction of Size Versus County Based [64.5 %] Average Perimeter Ratio [35.6 %] Percentage of Warned Area Verified (15km) [12.8 %] Average Storm Based Warning Size [1925 sq km] Probability of Detection(higher is better)[0.82] False Alarm Ratio (lower is better) [0.74] Critical Success Index (higher is better) [0.24] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat May 22 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 22 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005221600.o4MG08CY032700@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 22 May 2010 > News +---------------------------------------------- | Title : New SchoolNet: Pocahontas | Date : 21 May 04:31 PM | Author: Daryl Herzmann | URL : http://www.schoolnet8.com/site.phtml?station=SPCI4 +---------------------------------------------- A new KCCI-TV SchoolNet8 site has come online. This site is located in Pocahontas, which is a bit northwest of Fort Dodge. The site has a NWS Location Identifier of SPCI4 and is located at 42.7343N , 94.6728W at an elevation of 372 meters. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-21 | Title : Severe totals | Date : 21 May 05:09 AM | Votes : Good: 25 Bad: 6 +---------------------------------------------- The featured chart displays the total number of tornado and severe thunderstorm warnings issued in Iowa up until 21 May since 1986 as computed by the IEM. While 2010 has seemed quiet, our pace is ahead of the past two years. There has certainly been a lack of tornadoes with the red bar showing one of the lowest totals in the past 10 years. The Storm Prediction Center has Iowa in a slight risk for severe weather on Sunday. > NWS Watch/Warning Summary for 21 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 30 0 | 0 0 0 0 0 | 1 Svr Tstorm 126 0 | 0 0 0 0 0 | 3 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: 156 Verified: 52 [33.3 %] Reduction of Size Versus County Based [76.5 %] Average Perimeter Ratio [31.6 %] Percentage of Warned Area Verified (15km) [18.1 %] Average Storm Based Warning Size [1133 sq km] Probability of Detection(higher is better)[0.79] 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 Sun May 23 11:00:05 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 23 May 2010 11:00:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201005231600.o4NG059i004363@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 23 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 22 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 17 0 | 0 0 0 0 0 | 2 Svr Tstorm 50 0 | 0 0 0 0 2 | 2 Fl Flood 6 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: 64 Verified: 29 [45.3 %] Reduction of Size Versus County Based [74.5 %] Average Perimeter Ratio [23.1 %] Percentage of Warned Area Verified (15km) [15.0 %] Average Storm Based Warning Size [2432 sq km] Probability of Detection(higher is better)[0.92] False Alarm Ratio (lower is better) [0.55] Critical Success Index (higher is better) [0.44] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon May 24 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 24 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005241600.o4OG08fG011491@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 24 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 23 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 40 0 | 0 0 0 0 0 | 1 Svr Tstorm 135 0 | 0 0 0 0 0 | 4 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: 167 Verified: 70 [41.9 %] Reduction of Size Versus County Based [77.4 %] Average Perimeter Ratio [27.3 %] Percentage of Warned Area Verified (15km) [18.0 %] Average Storm Based Warning Size [1932 sq km] Probability of Detection(higher is better)[0.80] False Alarm Ratio (lower is better) [0.58] Critical Success Index (higher is better) [0.38] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue May 25 11:00:15 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 25 May 2010 11:00:15 -0500 Subject: IEM Daily Bulletin Message-ID: <201005251600.o4PG0FhC000766@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 25 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-24 | Title : Dew points ramping up | Date : 24 May 05:08 AM | Votes : Good: 19 Bad: 3 +---------------------------------------------- The featured chart shows an hourly temperature and dew point time series for Ames this May. The past four days have seen a remarkable increase in dew point with values over 70 on Sunday. The chart shows how the first three weeks of May barely saw a dew point reading above 50, oh how the weather has shifted gears from spring to summer like! > NWS Watch/Warning Summary for 24 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 75 0 | 0 0 0 0 1 | 4 Svr Tstorm 369 0 | 0 0 0 5 15 | 6 Fl Flood 44 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: 433 Verified: 182 [42.0 %] Reduction of Size Versus County Based [72.0 %] Average Perimeter Ratio [27.2 %] Percentage of Warned Area Verified (15km) [13.8 %] Average Storm Based Warning Size [2575 sq km] Probability of Detection(higher is better)[0.81] False Alarm Ratio (lower is better) [0.58] Critical Success Index (higher is better) [0.38] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed May 26 11:00:11 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 26 May 2010 11:00:11 -0500 Subject: IEM Daily Bulletin Message-ID: <201005261600.o4QG0BIe029399@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 26 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-25 | Title : Yesterday was hot | Date : 25 May 05:10 AM | Votes : Good: 22 Bad: 6 +---------------------------------------------- Temperatures soared into the lower 90s on Monday and are expected to approach 90 again today. The featured map provides an analysis of the percentile value for the warmest temperature so far this year versus historical data prior to 25 May. Values of 100 imply that the warmest temperature this year is warmer than any temperature in previous years prior to 25 May. Thunderstorms are expected to today with slightly cooler weather tomorrow. > NWS Watch/Warning Summary for 25 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 38 0 | 0 0 0 0 0 | 0 Svr Tstorm 137 7 | 2 3 6 1 1 | 2 Fl Flood 39 3 | 1 2 2 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: 171 Verified: 71 [41.5 %] Reduction of Size Versus County Based [79.7 %] Average Perimeter Ratio [25.5 %] Percentage of Warned Area Verified (15km) [23.1 %] Average Storm Based Warning Size [1527 sq km] Probability of Detection(higher is better)[0.72] False Alarm Ratio (lower is better) [0.58] Critical Success Index (higher is better) [0.36] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu May 27 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 27 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005271600.o4RG088U021090@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 27 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-26 | Title : Quite hot for May | Date : 26 May 05:09 AM | Votes : Good: 19 Bad: 6 +---------------------------------------------- This past Sunday and Monday saw high temperatures over 90 for most of the state and lows around 70. For May, these two days were some of the warmest on record and the warmest for days prior to 25 May as shown by the featured illustration. The two days were also exceptional for having low temperatures above 70, which was only the sixth time that has happened in May dating back to 1893. All of these values are statewide areal averages computed by the IEM. > NWS Watch/Warning Summary for 26 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 12 0 | 0 0 0 0 0 | 2 Svr Tstorm 144 0 | 0 0 0 0 0 | 2 Fl Flood 16 0 | 0 2 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: 151 Verified: 75 [49.7 %] Reduction of Size Versus County Based [83.4 %] Average Perimeter Ratio [28.0 %] Percentage of Warned Area Verified (15km) [30.9 %] Average Storm Based Warning Size [1251 sq km] Probability of Detection(higher is better)[0.75] False Alarm Ratio (lower is better) [0.50] Critical Success Index (higher is better) [0.43] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri May 28 11:00:08 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 28 May 2010 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201005281600.o4SG08og021688@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 28 May 2010 > News +---------------------------------------------- | Title : Dec COOP data uploaded | Date : 28 May 09:29 AM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/climodat/ +---------------------------------------------- The quality controlled Iowa COOP data for December 2009 has been uploaded to the IEM. Harry Hillaker, our state climatologist, passes along these notes about the month.

The month averaged 19.7 degrees or 2.9 degrees below normal to rank as the 30th coolest December among 137 years of records. Precipitation averaged 2.73 inches or 1.50 inches greater than normal to rank as the second wettest December of record (behind only 1982???s 3.45 inches). The statewide average snowfall was 24.1 inches, 16.8 inches above normal and the second highest total among any calendar month (only Dec. 2000 had more snow at 25.5 inches). The hefty snowfall total was helped immensely by two huge storms. The first blizzard of December 7-9 brought a statewide average of 10.5 inches of snow. This tied with the blizzard of January 2-4, 1971 as Iowa???s largest snow event since March 10-14, 1951 (a whopper at 14.3 inches). Knoxville reported the most snow with this storm with 17.0 inches. The second event of December 23-27 brought a statewide average of 8.6 inches of snow. This ranks as the fifth greatest storm total since 1950. Spencer reported the most snow from storm #2 with 24.0 inches.
Annual 2009 statistics show a statewide average temperature of 46.6 degrees or 1.2 degrees below normal while precipitation totaled 40.05 inches or 5.97 inches above normal. This ranks as the 25th coolest and 11th wettest year among 137 years of records. Snowfall averaged 42.3 inches or 9.9 inches above normal to rank as the 14th snowiest calendar year among 122 years of records. Finally, the exceptionally cool summer of 2009 resulted in the third smallest cooling degree day total of record (503); behind only 1992 (488) and 1915 (493).

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

                 __________2009_____________________________
                 DEC  NOV  OCT  SEP  AUG  JUL  JUN  MAY  APR
Maximum High:      0    2    0    0    0    0   25   15   46
Minimum High:     24    0  396    1  150  235   67   18   24
Maximum Low:       3   74    2    0   12    0   35    1    1
Minimum Low:      41    0   35   21  103  144    4   43    1
Maximum Precip:  193   45  161   25   65   58   41   51   76

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. 

                 _________________2009___________
                 DEC   NOV   OCT   SEP   AUG  JUL   JUN
High Temp Bias   0.8   0.9   0.8   0.9   0.3   0.7   0.5
High Temp RMSE   1.1   1.2   1.1   1.3   1.0   1.2   1.0
Low  Temp Bias   1.3   1.1   1.2   0.8   1.0   0.7   1.2
Low  Temp RMSE   1.7   1.6   1.6   1.7   1.6   1.3   1.6
Precip    Bias  -1.41 -0.22 -1.10 -0.15 -0.71 -0.47 -0.36
Precip    RMSE   1.44  0.33  1.14  0.41  1.04  0.72  0.86
> Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-27 | Title : Catching up on GDDs | Date : 27 May 05:09 AM | Votes : Good: 14 Bad: 6 +---------------------------------------------- The featured graph displays the accumulated growing degree days for May here in Ames. The cold weather during the middle of May allowed deficits to accumulate, but our recent stretch of warm weather has nearly caught us back to climatology. The warm weather looks to continue into the weekend with highs back in the 70s for next week. > NWS Watch/Warning Summary for 27 May 2010 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 4 0 | 0 0 0 0 0 | 1 Svr Tstorm 126 0 | 0 0 0 0 0 | 1 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: 125 Verified: 50 [40.0 %] Reduction of Size Versus County Based [82.1 %] Average Perimeter Ratio [23.8 %] Percentage of Warned Area Verified (15km) [23.5 %] Average Storm Based Warning Size [864 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 Sat May 29 11:00:25 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 29 May 2010 11:00:25 -0500 Subject: IEM Daily Bulletin Message-ID: <201005291600.o4TG0PUg032673@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 29 May 2010 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2010-05-28 | Title : Lack of tornados | Date : 28 May 05:28 AM | Votes : Good: 26 Bad: 7 +---------------------------------------------- The featured map displays a summary of preliminary tornado reports so far for this year. A close inspection shows no dots in Iowa, which is the first time since 1980 that Iowa has yet to see a tornado this far into the year. The forecast does not indicate significant tornado chances for the state for the next week. > NWS Watch/Warning Summary for 28 May 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 209 0 | 0 0 0 0 0 | 3 Fl Flood 41 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: 209 Verified: 91 [43.5 %] Reduction of Size Versus County Based [72.8 %] Average Perimeter Ratio [32.9 %] Percentage of Warned Area Verified (15km) [19.7 %] Average Storm Based Warning Size [1220 sq km] Probability of Detection(higher is better)[0.76] False Alarm Ratio (lower is better) [0.56] Critical Success Index (higher is better) [0.38] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun May 30 11:00:06 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 30 May 2010 11:00:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201005301600.o4UG06d8019154@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 30 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 29 May 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 91 0 | 0 0 0 0 4 | 4 Fl Flood 26 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: 92 Verified: 28 [30.4 %] Reduction of Size Versus County Based [77.5 %] Average Perimeter Ratio [30.2 %] Percentage of Warned Area Verified (15km) [13.6 %] Average Storm Based Warning Size [1266 sq km] Probability of Detection(higher is better)[0.65] False Alarm Ratio (lower is better) [0.70] Critical Success Index (higher is better) [0.26] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon May 31 11:00:05 2010 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 31 May 2010 11:00:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201005311600.o4VG05D3032072@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 31 May 2010 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 30 May 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 49 0 | 0 0 0 1 0 | 2 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: 47 Verified: 24 [51.1 %] Reduction of Size Versus County Based [67.4 %] Average Perimeter Ratio [31.3 %] Percentage of Warned Area Verified (15km) [20.7 %] Average Storm Based Warning Size [1409 sq km] Probability of Detection(higher is better)[0.76] False Alarm Ratio (lower is better) [0.49] Critical Success Index (higher is better) [0.44] -------------- next part -------------- An HTML attachment was scrubbed... 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