From akrherz at iastate.edu Tue Mar 1 11:00:22 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 1 Mar 2011 11:00:22 -0600 Subject: IEM Daily Bulletin Message-ID: <201103011700.p21H0MKA018459@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 01 March 2011 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 28 Feb 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 66 0 | 0 0 0 0 0 | 6 Svr Tstorm 168 0 | 0 0 0 0 0 | 2 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: 234 Verified: 88 [37.6 %] Reduction of Size Versus County Based [52.1 %] Average Perimeter Ratio [45.7 %] Percentage of Warned Area Verified (15km) [19.1 %] Average Storm Based Warning Size [2315 sq km] Probability of Detection(higher is better)[0.77] False Alarm Ratio (lower is better) [0.62] Critical Success Index (higher is better) [0.34] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed Mar 2 11:00:05 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 2 Mar 2011 11:00:05 -0600 Subject: IEM Daily Bulletin Message-ID: <201103021700.p22H05X6031473@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 02 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-01 | Title : Done with meteorological winter | Date : 01 Mar 05:51 AM | Votes : Good: 18 Bad: 3 +---------------------------------------------- The three months of the year known as meteorological winter are now in the books and preliminary data shows that high and low temperatures were below average for the period. The featured chart presents these averages and the last four winters have been on the cold side. But now we can focus on March and hopes for a warm spring! March will begin like a lamb with highs in the 40s today. > NWS Watch/Warning Summary for 01 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 0 | 0 0 0 0 0 | 0 Fl Flood 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 Thu Mar 3 11:00:07 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 3 Mar 2011 11:00:07 -0600 Subject: IEM Daily Bulletin Message-ID: <201103031700.p23H07tp012242@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 03 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-02 | Title : Almost forgot about winter | Date : 02 Mar 06:00 AM | Votes : Good: 14 Bad: 4 +---------------------------------------------- The first day of March was a very pleasant day with sunshine and temperatures in the upper 40s and 50s. One almost forgot about winter and hoped the end of meteorological winter was the end of the actual winter season as well. But then, a cold front swept the state during the evening and dropped temperatures below freezing and a brisk wind pushed wind chills to values below zero in some locations. The featured chart shows the change for Denison from a high yesterday of 57 to a wind chill of -5 this morning. > NWS Watch/Warning Summary for 02 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 0 | 0 0 0 0 0 | 0 Fl Flood 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 Mar 4 11:00:13 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 4 Mar 2011 11:00:13 -0600 Subject: IEM Daily Bulletin Message-ID: <201103041700.p24H0DG3000627@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 04 March 2011 > News +---------------------------------------------- | Title : Feb ASOS Data Uploaded | Date : 03 Mar 06:57 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/request/asos/1min.phtml +----------------------------------------------

The one minute interval Iowa ASOS data for February 2011 has been uploaded to the IEM. This also includes the neighbouring sites of Sioux Falls, Moline, and Omaha. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-03 | Title : Severe Weather in March | Date : 03 Mar 05:57 AM | Votes : Good: 9 Bad: 29 +---------------------------------------------- The numbers on the featured plot show the yearly average March temperature for Iowa. The location of the number represents the spatial center of mass for all the severe thunderstorm and tornado warnings issued for March during that year. The map is attempting to show the relationship between average temperature in Iowa to the favoured are to where severe weather happens. The warmest temperatures mostly appear to the west and north in this map, which makes some logical sense as warmer weather would promote severe weather further north near Iowa. The coldest temperatures imply that severe weather is pushed to the south away from the state. The limited area of this plot also suggests that most of the severe weather happens in this area during March. > NWS Watch/Warning Summary for 03 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 1 0 | 0 0 0 0 0 | 0 Fl Flood 0 0 | 0 0 0 0 0 | N/A ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD > IEM Cow Report SVR+TOR Warnings Issued: 1 Verified: 0 [0.0 %] Reduction of Size Versus County Based [31.9 %] Average Perimeter Ratio [0.0 %] Percentage of Warned Area Verified (15km) [0.0 %] Average Storm Based Warning Size [1110 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 Sat Mar 5 11:00:08 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 5 Mar 2011 11:00:08 -0600 Subject: IEM Daily Bulletin Message-ID: <201103051700.p25H08SY004977@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 05 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-04 | Title : Warm and cold days this year | Date : 04 Mar 05:53 AM | Votes : Good: 12 Bad: 7 +---------------------------------------------- Temperatures warmed nicely on Thursday pushing 50 degrees for Ames. The featured chart presents the number of days with the high temperature above 50 and the number with the high below freezing since the beginning of the year. This winter has seen its fair share of cold days with this being the fifth straight year with more than average number of cold days. At this date last year, we had yet to see 50 degrees at all, so this year has been an improvement! Colder temperatures are here for this weekend with highs back below freezing. > NWS Watch/Warning Summary for 04 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 4 0 | 0 0 0 0 0 | 1 Svr Tstorm 19 0 | 0 0 0 0 0 | 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: 22 Verified: 8 [36.4 %] Reduction of Size Versus County Based [65.0 %] Average Perimeter Ratio [25.3 %] Percentage of Warned Area Verified (15km) [11.3 %] Average Storm Based Warning Size [2037 sq km] Probability of Detection(higher is better)[0.61] False Alarm Ratio (lower is better) [0.64] Critical Success Index (higher is better) [0.29] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Mar 6 11:00:12 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 6 Mar 2011 11:00:12 -0600 Subject: IEM Daily Bulletin Message-ID: <201103061700.p26H0C5A030910@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 06 March 2011 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 05 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 14 0 | 0 0 0 0 0 | 2 Svr Tstorm 20 0 | 0 0 0 0 0 | 0 Fl Flood 13 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: 35 Verified: 7 [20.0 %] Reduction of Size Versus County Based [71.4 %] Average Perimeter Ratio [8.8 %] Percentage of Warned Area Verified (15km) [11.8 %] Average Storm Based Warning Size [1636 sq km] Probability of Detection(higher is better)[0.78] False Alarm Ratio (lower is better) [0.80] Critical Success Index (higher is better) [0.19] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Mar 7 11:00:14 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 7 Mar 2011 11:00:14 -0600 Subject: IEM Daily Bulletin Message-ID: <201103071700.p27H0EAV023876@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 07 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-06 | Title : Plenty of time yet for snow | Date : 06 Mar 05:50 PM | Votes : Good: 8 Bad: 3 +---------------------------------------------- While the lengthening days and warmer temperatures of March can make winter fell like it has gone away, the cold and snow of winter is still common in March. The featured chart presents the partitioning of yearly snowfall between dates prior to 1 March and those afterward. The 1to1 line shows that getter more snow after 1 March than before is rather uncommon, so our total so far of around 30 inches has little chance of being doubled this spring. Getting another 3-12 inches is common and the forecast this week looks to work on those totals with heavy snow possible in Iowa on Tuesday. > NWS Watch/Warning Summary for 06 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 3 0 | 0 0 0 0 0 | 1 Svr Tstorm 8 0 | 0 0 0 0 0 | 0 Fl Flood 7 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: 11 Verified: 6 [54.5 %] Reduction of Size Versus County Based [57.6 %] Average Perimeter Ratio [48.0 %] Percentage of Warned Area Verified (15km) [15.2 %] Average Storm Based Warning Size [1789 sq km] Probability of Detection(higher is better)[0.50] False Alarm Ratio (lower is better) [0.45] Critical Success Index (higher is better) [0.35] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Mar 8 11:00:09 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 8 Mar 2011 11:00:09 -0600 Subject: IEM Daily Bulletin Message-ID: <201103081700.p28H09jE028901@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 08 March 2011 > News +---------------------------------------------- | Title : Feb AWOS Data Uploaded | Date : 07 Mar 01:26 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/request/awos/1min.php +----------------------------------------------

The one minute interval Iowa AWOS data for February has been uploaded to the IEM. This information is kindly provided by the Aviation Division at the Iowa DOT. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-07 | Title : Heavy snow and rain coming | Date : 07 Mar 09:34 PM | Votes : Good: 9 Bad: 8 +---------------------------------------------- Our next storm system is gathering to bring rain and snow to the state on Tuesday into Wednesday. The featured chart is of different forecasts of snowfall for the upcoming period for Mason City. The totals range from 3.5 to 7.5 inches. A big question is if temperatures will warm enough to support more rain than snow. There seems to be little doubt that up to an inch of precipitation will fall over a good portion of the state. > NWS Watch/Warning Summary for 07 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 0 | 0 0 0 0 0 | 0 Fl Flood 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 Wed Mar 9 11:00:08 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 9 Mar 2011 11:00:08 -0600 Subject: IEM Daily Bulletin Message-ID: <201103091700.p29H08tC019259@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 09 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-08 | Title : Plenty of storms this winter | Date : 08 Mar 07:02 PM | Votes : Good: 13 Bad: 7 +---------------------------------------------- There has seemingly been no shortage of storms this winter season with another large system impacting Iowa this evening. The featured chart presents the areal coverage over Iowa of RADAR returns since the first of December. You could consider each of the chart spikes as another storm system. Outside of a quite stretch in February, the chart is quite noisy indicative of the active winter. > NWS Watch/Warning Summary for 08 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 12 0 | 0 0 0 0 0 | 3 Svr Tstorm 41 0 | 0 0 0 0 0 | 0 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: 52 Verified: 23 [44.2 %] Reduction of Size Versus County Based [66.6 %] Average Perimeter Ratio [40.9 %] Percentage of Warned Area Verified (15km) [16.7 %] Average Storm Based Warning Size [1522 sq km] Probability of Detection(higher is better)[0.91] False Alarm Ratio (lower is better) [0.56] Critical Success Index (higher is better) [0.42] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Mar 10 11:00:28 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 10 Mar 2011 11:00:28 -0600 Subject: IEM Daily Bulletin Message-ID: <201103101700.p2AH0SSi003240@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 10 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-09 | Title : Winter Storm #16 | Date : 09 Mar 03:22 PM | Votes : Good: 16 Bad: 5 +---------------------------------------------- Our latest winter storm is now in the books having dumped very wet snow over a good portion of the state. Actual depths of snow did not get too deep, but it was a very wet causing a lot of pain to move around. The good news for snow-haters is that very warm air will make quick work of this latest round of snow. > NWS Watch/Warning Summary for 09 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 46 0 | 0 0 0 0 0 | 3 Svr Tstorm 49 0 | 0 0 0 0 0 | 1 Fl Flood 48 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: 95 Verified: 37 [38.9 %] Reduction of Size Versus County Based [60.1 %] Average Perimeter Ratio [28.0 %] Percentage of Warned Area Verified (15km) [17.9 %] Average Storm Based Warning Size [2024 sq km] Probability of Detection(higher is better)[0.80] False Alarm Ratio (lower is better) [0.61] Critical Success Index (higher is better) [0.36] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Fri Mar 11 11:00:20 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 11 Mar 2011 11:00:20 -0600 Subject: IEM Daily Bulletin Message-ID: <201103111700.p2BH0KR0011625@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 11 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-10 | Title : Highs after snowfall | Date : 10 Mar 12:18 PM | Votes : Good: 13 Bad: 5 +---------------------------------------------- High temperatures are struggling so far today thanks to our recent snowfall and being on the cold side of a departing area of surface high pressure. The featured chart presents the high temperature for a day after snowfall as recorded from the long term stations near Ames. The favored temperature is clearly around or just below freezing, which makes sense with all the newly deposited snow around. The greater the snowfall, the more likely the next day temperature will be below freezing, which makes sense as well. Much warmer air is set to arrive tomorrow and rid us of most of this new snow. > NWS Watch/Warning Summary for 10 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 2 0 | 0 0 0 0 0 | 0 Svr Tstorm 23 0 | 0 0 0 0 0 | 1 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: 25 Verified: 17 [68.0 %] Reduction of Size Versus County Based [64.0 %] Average Perimeter Ratio [20.3 %] Percentage of Warned Area Verified (15km) [21.7 %] Average Storm Based Warning Size [2590 sq km] Probability of Detection(higher is better)[0.79] False Alarm Ratio (lower is better) [0.32] Critical Success Index (higher is better) [0.58] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat Mar 12 11:00:13 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 12 Mar 2011 11:00:13 -0600 Subject: IEM Daily Bulletin Message-ID: <201103121700.p2CH0Dww005892@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 12 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-11 | Title : Has spring already started? | Date : 11 Mar 03:40 PM | Votes : Good: 6 Bad: 5 +---------------------------------------------- A refreshing push of much warmer air make it into the state today and sure makes things feel much more like spring, but is the spring season actually here? If one thinks about winter as being the 91 (1/4 year) coldest days of the year, then perhaps spring has already arrived. The featured chart looks at the coldest (avg high+low) 91 day period for Ames and a fit line is placed on the end of the period. The fit would indicate that spring is coming a bit earlier than in the past. The colors of the bars represent the quartile of the average temperature for the winter season. A number of the bars push well into March, but the forecast for the next week looks very warm, so based on this metric, we are probably in spring now! > NWS Watch/Warning Summary for 11 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 0 | 0 0 0 0 0 | 0 Fl Flood 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 No Warnings Issued -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Mar 13 11:00:17 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 13 Mar 2011 11:00:17 -0500 Subject: IEM Daily Bulletin Message-ID: <201103131600.p2DG0HLG000806@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 13 March 2011 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 12 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 0 | 0 0 0 0 0 | 0 Fl Flood 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 No Warnings Issued -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Mar 14 11:00:10 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 14 Mar 2011 11:00:10 -0500 Subject: IEM Daily Bulletin Message-ID: <201103141600.p2EG0AqJ003749@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 14 March 2011 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 13 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 6 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: 6 Verified: 4 [66.7 %] Reduction of Size Versus County Based [55.1 %] Average Perimeter Ratio [37.8 %] Percentage of Warned Area Verified (15km) [3.9 %] Average Storm Based Warning Size [7396 sq km] Probability of Detection(higher is better)[0.57] False Alarm Ratio (lower is better) [0.33] Critical Success Index (higher is better) [0.44] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Mar 15 11:00:09 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 15 Mar 2011 11:00:09 -0500 Subject: IEM Daily Bulletin Message-ID: <201103151600.p2FG09mg005282@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 15 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-14 | Title : Frozen March Days | Date : 14 Mar 05:53 AM | Votes : Good: 10 Bad: 7 +---------------------------------------------- Temperatures struggled on Sunday to rise above freezing over a good portion of the state. The featured chart presents the observed frequency of having the high or low temperature below freezing for a given day in March. While having low temperatures below freezing is still very common for the 13th of March, having the high temperature below freezing is a once every 5 years event. Warmer temperatures are in the forecast for this with highs in the 50s and 60s! > NWS Watch/Warning Summary for 14 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 2 0 | 0 0 0 0 0 | 0 Svr Tstorm 11 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: 13 Verified: 3 [23.1 %] Reduction of Size Versus County Based [66.9 %] Average Perimeter Ratio [36.9 %] Percentage of Warned Area Verified (15km) [10.3 %] Average Storm Based Warning Size [1521 sq km] Probability of Detection(higher is better)[0.46] False Alarm Ratio (lower is better) [0.77] Critical Success Index (higher is better) [0.18] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed Mar 16 11:00:08 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 16 Mar 2011 11:00:08 -0500 Subject: IEM Daily Bulletin Message-ID: <201103161600.p2GG08Ri029100@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 16 March 2011 > News +---------------------------------------------- | Title : June COOP Data Uploaded | Date : 15 Mar 06:09 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/climodat/ +----------------------------------------------

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

The statewide average precipitation was 10.40 inches or 5.76 inches above normal. This was the wettest June among 138 years of records (old record 10.33 in June 1947) and the second wettest calendar month (behind 10.50 inches in July 1993). Temperatures averaged 71.0 degrees or 1.2 degrees above normal to rank as the 41st warmest June among 138 years of records. Precipitation was above normal at every reporting point in the state, ranging from 5.44 inches at Sidney to 17.47 inches at Clarion. An unofficial rain gage near Rowan recorded 20.81 inches of rain for the month. Rainfall was fairly evenly distributed through the month which kept rivers high but helped to reduce the magnitude of the flood crests. The typical Iowa weather station recorded 18 days with measurable precipitation during the month.

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

                 ___2010 _________________2009______________
                 JUN  MAY  APR  MAR  FEB  JAN  DEC  NOV  OCT
Maximum High:      0   61   69    3    0    0    0    2    0
Minimum High:      5   45    6    0    6   97   24    0  396
Maximum Low:       2  112   42    7    0   18    3   74    2
Minimum Low:       0   13    1    0   38  131   41    0   35
Maximum Precip:  126   52   38   30   25  151  193   45  161

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. 

                 _____2010_________________________2009______
                 JUN   MAY   APR   MAR   FEB   JAN   DEC   NOV
High Temp Bias   0.6   1.1   0.5   1.9   1.4   1.3   0.8   0.9
High Temp RMSE   1.1   1.4   1.1   2.2   1.7   1.6   1.1   1.2
Low  Temp Bias   0.8   1.2   1.6   2.5   2.0   1.9   1.3   1.1
Low  Temp RMSE   1.3   1.6   2.0   2.7   2.4   2.1   1.7   1.6
Precip    Bias  -0.05 -0.64 -0.18 -0.37 -0.61 -0.47 -1.41 -0.22
Precip    RMSE   1.63  0.81  0.56  0.44  0.61  0.50  1.44  0.33

The Climodat reports referenced from this news item are summaries of this daily data. > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-15 | Title : Devil's Savings Time | Date : 15 Mar 05:48 AM | Votes : Good: 11 Bad: 6 +---------------------------------------------- For some of you, your clocks are now accurate again after our recent switch back into Daylight Savings Time. Of course, we are not saving anything as the hour of sunshine in the evening is at the expense of an hour of sunshine in the morning. The featured image shows the transport of sunshine into the evening hours. The devil is involved in this process as it encourages an extra hour of sleep in the morning before the sun-provoked rooster wakes you up. > NWS Watch/Warning Summary for 15 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 4 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: 1 [25.0 %] Reduction of Size Versus County Based [90.7 %] Average Perimeter Ratio [6.3 %] Percentage of Warned Area Verified (15km) [14.1 %] Average Storm Based Warning Size [635 sq km] Probability of Detection(higher is better)[0.67] False Alarm Ratio (lower is better) [0.75] Critical Success Index (higher is better) [0.22] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Mar 17 11:00:19 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 17 Mar 2011 11:00:19 -0500 Subject: IEM Daily Bulletin Message-ID: <201103171600.p2HG0JwX018481@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 17 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-16 | Title : Instability returns | Date : 16 Mar 05:57 AM | Votes : Good: 12 Bad: 2 +---------------------------------------------- The featured chart presents the highest forecasted surface based convective available potential energy (CAPE) from the GFS model for a grid point near Ames since the first of the year. This variable gives an indication to the degree of instability in the atmosphere that helps to facilitate thunderstorms. Values above 1,000 typically are when the stronger storms are possible. While values shown are well below 1,000 for surface based air parcels, CAPE computed for elevated parcels is expected to be larger and will allow for some hail producing storms in the coming week. > NWS Watch/Warning Summary for 16 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 1 0 | 0 0 0 0 1 | 0 Svr Tstorm 1 0 | 0 0 0 0 0 | 0 Fl Flood 0 0 | 0 0 0 0 0 | N/A ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD > IEM Cow Report SVR+TOR Warnings Issued: 2 Verified: 0 [0.0 %] Reduction of Size Versus County Based [73.0 %] Average Perimeter Ratio [34.1 %] Percentage of Warned Area Verified (15km) [0.0 %] Average Storm Based Warning Size [4357 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 Fri Mar 18 11:00:06 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 18 Mar 2011 11:00:06 -0500 Subject: IEM Daily Bulletin Message-ID: <201103181600.p2IG06jw022213@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 18 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-17 | Title : Somewhat lucky for two days of 60s | Date : 17 Mar 05:54 AM | Votes : Good: 15 Bad: 4 +---------------------------------------------- Temperatures soared on Wednesday into the 60s for most of Iowa and a repeat performance is expected today. Is it the luck of the Irish to see two days above 60 in a row in March? The featured chart shows that the probability of seeing a day above 60 after a day above 60 is around 50%, so we are only somewhat lucky! Temperatures return to near normal values on Friday along with numerous chances of rain. > NWS Watch/Warning Summary for 17 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 0 | 0 0 0 0 0 | 0 Fl Flood 1 0 | 0 0 0 0 0 | N/A ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD > IEM Cow Report No Warnings Issued -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sat Mar 19 11:00:12 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 19 Mar 2011 11:00:12 -0500 Subject: IEM Daily Bulletin Message-ID: <201103191600.p2JG0CRd032287@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 19 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-18 | Title : 20 some degree departure | Date : 18 Mar 06:34 AM | Votes : Good: 9 Bad: 4 +---------------------------------------------- Temperatures on Thursday were again well above average for this time of year. The featured map shows high temperature departures for the 17th of March and Iowa enjoyed temperatures 15-30 degrees above average. Cooler weather has returned today along with chances of rain, but temperatures will stay above freezing to keep our snow chances at a minimum. > NWS Watch/Warning Summary for 18 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 1 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: 6 Verified: 3 [50.0 %] Reduction of Size Versus County Based [66.3 %] Average Perimeter Ratio [40.2 %] Percentage of Warned Area Verified (15km) [21.1 %] Average Storm Based Warning Size [1134 sq km] Probability of Detection(higher is better)[0.44] False Alarm Ratio (lower is better) [0.50] Critical Success Index (higher is better) [0.31] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Mar 20 11:00:26 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 20 Mar 2011 11:00:26 -0500 Subject: IEM Daily Bulletin Message-ID: <201103201600.p2KG0QLo008803@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 20 March 2011 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 19 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 4 0 | 0 0 0 0 0 | 0 Svr Tstorm 46 0 | 0 0 0 0 0 | 2 Fl Flood 0 0 | 0 0 0 0 0 | N/A ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD > IEM Cow Report SVR+TOR Warnings Issued: 50 Verified: 27 [54.0 %] Reduction of Size Versus County Based [71.6 %] Average Perimeter Ratio [29.7 %] Percentage of Warned Area Verified (15km) [22.7 %] Average Storm Based Warning Size [1397 sq km] Probability of Detection(higher is better)[0.85] False Alarm Ratio (lower is better) [0.46] Critical Success Index (higher is better) [0.49] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Mar 21 11:00:15 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 21 Mar 2011 11:00:15 -0500 Subject: IEM Daily Bulletin Message-ID: <201103211600.p2LG0FdU011887@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 21 March 2011 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 20 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 17 2 | 0 1 2 2 2 | 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: 17 Verified: 6 [35.3 %] Reduction of Size Versus County Based [75.3 %] Average Perimeter Ratio [24.2 %] Percentage of Warned Area Verified (15km) [15.8 %] Average Storm Based Warning Size [963 sq km] Probability of Detection(higher is better)[0.54] False Alarm Ratio (lower is better) [0.65] Critical Success Index (higher is better) [0.27] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Mar 22 11:00:33 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 22 Mar 2011 11:00:33 -0500 Subject: IEM Daily Bulletin Message-ID: <201103221600.p2MG0XMB008745@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 22 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-21 | Title : Moisture returns for spring | Date : 21 Mar 05:55 AM | Votes : Good: 10 Bad: 1 +---------------------------------------------- Moisture has been on the increase to celebrate our start to the spring season. The featured chart shows the observed dew point temperature for the Ames Airport since the beginning of the year. The increase in moisture is helping to fuel thunderstorms with some of them producing hail on Sunday. Severe weather is possible for the next two days and then much cooler weather expected for the rest of the week. > NWS Watch/Warning Summary for 21 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 2 0 | 0 0 0 0 0 | 0 Svr Tstorm 36 2 | 0 0 2 0 4 | 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: 37 Verified: 21 [56.8 %] Reduction of Size Versus County Based [73.2 %] Average Perimeter Ratio [21.7 %] Percentage of Warned Area Verified (15km) [20.5 %] Average Storm Based Warning Size [1299 sq km] Probability of Detection(higher is better)[0.77] 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 Wed Mar 23 11:00:37 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 23 Mar 2011 11:00:37 -0500 Subject: IEM Daily Bulletin Message-ID: <201103231600.p2NG0bN0029793@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 23 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-22 | Title : Hail time | Date : 22 Mar 05:46 AM | Votes : Good: 17 Bad: 2 +---------------------------------------------- Storms bringing hail have been frequenting the state these past few days with more expected today. The featured chart presents the frequency of hail observations based on National Weather Service local storm reports since 2003. The top chart shows hail to be most common during the spring and summer months. The bottom chart shows the late afternoon as being the most favored time for hail. The late afternoon is typically when the atmosphere is at its most unstable condition after the sun has heated the ground for most of the day. Hail can occur at any time of day and certainly during the night time hours. > NWS Watch/Warning Summary for 22 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 22 19 | 0 0 16 6 0 | 2 Svr Tstorm 52 21 | 2 4 21 9 1 | 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: 71 Verified: 32 [45.1 %] Reduction of Size Versus County Based [60.4 %] Average Perimeter Ratio [17.1 %] Percentage of Warned Area Verified (15km) [20.0 %] Average Storm Based Warning Size [1733 sq km] Probability of Detection(higher is better)[0.88] False Alarm Ratio (lower is better) [0.55] Critical Success Index (higher is better) [0.42] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Mar 24 11:01:36 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 24 Mar 2011 11:01:36 -0500 Subject: IEM Daily Bulletin Message-ID: <201103241601.p2OG1aJ4021100@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 24 March 2011 > News +---------------------------------------------- | Title : Madison County Tornado Survey | Date : 23 Mar 07:49 PM | Author: Daryl Herzmann | URL : http://mesonet.agron.iastate.edu/cases/110322/iowa_helicopter_survey/ +----------------------------------------------

The nice folks over at Iowa Helicopter have shared their air survey of the damage from the EF2 rated tornado over Madison County last night. You can find these images on a map at the referenced URL in this news item or directly here.

While I did not capture any of the tornadoes on webcam yesterday, I got some decent wall clouds.

Lamoni:

Winterset:

Check out my channel on YouTube for more weather time lapses! > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-23 | Title : Creston Tornado | Date : 23 Mar 05:50 AM | Votes : Good: 41 Bad: 3 +---------------------------------------------- Iowa's first real taste of severe weather season arrived on Tuesday with a powerful low pressure system pushing through the state late in the afternoon. Numerous frontal boundaries were present over southern Iowa late Tuesday afternoon and helped to spin up some brief tornadoes. The featured image from Tyler Love of Creston shows the photogenic tornado on the northwest side of town. Major temperature changes are in store with a return to winter like conditions for the remainder of the week. > NWS Watch/Warning Summary for 23 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 29 0 | 0 0 0 0 0 | 4 Svr Tstorm 217 0 | 0 0 0 0 0 | 2 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: 245 Verified: 122 [49.8 %] Reduction of Size Versus County Based [59.7 %] Average Perimeter Ratio [21.6 %] Percentage of Warned Area Verified (15km) [21.5 %] Average Storm Based Warning Size [1724 sq km] Probability of Detection(higher is better)[0.77] 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 Mar 25 11:00:21 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Fri, 25 Mar 2011 11:00:21 -0500 Subject: IEM Daily Bulletin Message-ID: <201103251600.p2PG0LMe025328@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 25 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-24 | Title : From 80 to 30 | Date : 24 Mar 05:58 AM | Votes : Good: 17 Bad: 1 +---------------------------------------------- The featured chart presents a recent time series of air temperature and wind chill values for Shenandoah Iowa since Sunday. Very warm air for this time of year has given way to a colder air mass with highs expected to struggle in the 30s and low 40s for the next week! Average highs should be around 50. > NWS Watch/Warning Summary for 24 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 3 0 | 0 0 0 0 0 | 0 Fl Flood 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: 3 Verified: 0 [0.0 %] Reduction of Size Versus County Based [70.6 %] Average Perimeter Ratio [22.6 %] Percentage of Warned Area Verified (15km) [0.0 %] Average Storm Based Warning Size [1163 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 Sat Mar 26 11:00:05 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sat, 26 Mar 2011 11:00:05 -0500 Subject: IEM Daily Bulletin Message-ID: <201103261600.p2QG05Ln010139@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 26 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-25 | Title : Augh, snow again | Date : 25 Mar 05:54 AM | Votes : Good: 15 Bad: 2 +---------------------------------------------- Snow is once again visiting the state today even after a day that reminded us of spring with severe storms and tornadoes. The featured map is from the IEM Freeze application showing the combination of NEXRAD, RWIS pavement temperatures (dots), and air temperatures. Only a few inches of snow will fall for some lucky few, but more chances of snow are in the forecast along with cold temperatures. > NWS Watch/Warning Summary for 25 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 0 0 | 0 0 0 0 0 | 0 Svr Tstorm 0 0 | 0 0 0 0 0 | 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 No Warnings Issued -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Sun Mar 27 11:01:22 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Sun, 27 Mar 2011 11:01:22 -0500 Subject: IEM Daily Bulletin Message-ID: <201103271601.p2RG1Mp7020205@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 27 March 2011 > News No news is good news > Daily Feature No feature posted > NWS Watch/Warning Summary for 26 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 36 0 | 0 0 0 0 0 | 4 Svr Tstorm 190 0 | 0 0 0 0 0 | 1 Fl Flood 7 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: 224 Verified: 76 [33.9 %] Reduction of Size Versus County Based [63.9 %] Average Perimeter Ratio [24.9 %] Percentage of Warned Area Verified (15km) [16.7 %] Average Storm Based Warning Size [1411 sq km] Probability of Detection(higher is better)[0.88] False Alarm Ratio (lower is better) [0.66] Critical Success Index (higher is better) [0.32] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Mon Mar 28 11:00:53 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Mon, 28 Mar 2011 11:00:53 -0500 Subject: IEM Daily Bulletin Message-ID: <201103281600.p2SG0rfk009960@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 28 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-27 | Title : Snow Storm #17 | Date : 27 Mar 07:37 PM | Votes : Good: 3 Bad: 1 +---------------------------------------------- While it was not much for a winter storm, it did dump upwards of 4 inches of snow over extreme southwestern Iowa and probably should be included in the listing of storms for this winter season! Most of this snow melted by later in the day. Heavier amounts occurred over Missouri and more snow even fell today. > NWS Watch/Warning Summary for 27 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 8 0 | 0 0 0 0 0 | 1 Svr Tstorm 109 0 | 0 0 0 0 0 | 2 Fl Flood 0 0 | 0 0 0 0 0 | N/A ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD > IEM Cow Report SVR+TOR Warnings Issued: 117 Verified: 62 [53.0 %] Reduction of Size Versus County Based [67.2 %] Average Perimeter Ratio [12.2 %] Percentage of Warned Area Verified (15km) [23.7 %] Average Storm Based Warning Size [1427 sq km] Probability of Detection(higher is better)[0.93] False Alarm Ratio (lower is better) [0.47] Critical Success Index (higher is better) [0.51] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Tue Mar 29 11:00:18 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Tue, 29 Mar 2011 11:00:18 -0500 Subject: IEM Daily Bulletin Message-ID: <201103291600.p2TG0IY6019173@despam-12.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 29 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-28 | Title : Three weeks behind | Date : 28 Mar 05:56 AM | Votes : Good: 16 Bad: 1 +---------------------------------------------- Our recent stretch of weather has seen high temperatures struggle in the 30s, which is well below climatological average for this time of year. The featured chart presents the number of days one would have to go in order to match the current day's high temperature with climatology. For example, the high temperature yesterday is what we would have expected for a high 22 days ago. The warm days in February stick out with one day having a high temperature that what our average high is for mid April. Warmer temperatures are in the forecast for the end of the week! > NWS Watch/Warning Summary for 28 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 1 0 | 0 0 0 0 0 | 0 Svr Tstorm 19 0 | 0 0 0 0 0 | 2 Fl Flood 0 0 | 0 0 0 0 0 | N/A ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA OAX = Omaha, NE FSD = Sioux Falls, SD > IEM Cow Report SVR+TOR Warnings Issued: 16 Verified: 6 [37.5 %] Reduction of Size Versus County Based [64.8 %] Average Perimeter Ratio [13.6 %] Percentage of Warned Area Verified (15km) [14.6 %] Average Storm Based Warning Size [1397 sq km] Probability of Detection(higher is better)[0.62] False Alarm Ratio (lower is better) [0.62] Critical Success Index (higher is better) [0.30] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Wed Mar 30 11:01:19 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Wed, 30 Mar 2011 11:01:19 -0500 Subject: IEM Daily Bulletin Message-ID: <201103301601.p2UG1JsO021826@despam-10.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 30 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-29 | Title : 60s seem so far away | Date : 29 Mar 05:53 AM | Votes : Good: 15 Bad: 4 +---------------------------------------------- Our current stretch of seasonably cool weather continues with snow and freezing drizzle frequenting the state this morning. The featured chart shows high and low temperatures for Des Moines for the past 7 days along with climatology. That 60 degree temperature seems like an eternity ago. There is hope that 50s will return this weekend! > NWS Watch/Warning Summary for 29 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 8 0 | 0 0 0 0 0 | 2 Svr Tstorm 81 0 | 0 0 0 0 0 | 4 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: 95 Verified: 48 [50.5 %] Reduction of Size Versus County Based [71.4 %] Average Perimeter Ratio [11.9 %] Percentage of Warned Area Verified (15km) [23.2 %] Average Storm Based Warning Size [1366 sq km] Probability of Detection(higher is better)[0.91] False Alarm Ratio (lower is better) [0.49] Critical Success Index (higher is better) [0.48] -------------- next part -------------- An HTML attachment was scrubbed... URL: From akrherz at iastate.edu Thu Mar 31 11:00:26 2011 From: akrherz at iastate.edu (daryl herzmann) Date: Thu, 31 Mar 2011 11:00:26 -0500 Subject: IEM Daily Bulletin Message-ID: <201103311600.p2VG0Q4u017793@despam-11.iastate.edu> Iowa Environmental Mesonet Daily Bulletin for 31 March 2011 > News No news is good news > Daily Feature +---------------------------------------------- http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2011-03-30 | Title : Cold start to April coming? | Date : 30 Mar 05:54 AM | Votes : Good: 10 Bad: 3 +---------------------------------------------- The featured chart presents the combination of average high temperature for the first seven days of April versus the last seven days of March. This year's average is expected to end up around 42 degrees, which is cool but not the coolest values shown on the chart. The average for the first seven days of April is around 58 degrees and you can see that only a few years with such a cool last part of March were able to be above normal for the beginning of April. > NWS Watch/Warning Summary for 30 Mar 2011 Summary +_________ By WFO ____________+ Watches Type US IA | ARX DVN DMX OAX FSD | US Tornado 14 0 | 0 0 0 0 0 | 2 Svr Tstorm 33 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: 38 Verified: 14 [36.8 %] Reduction of Size Versus County Based [62.6 %] Average Perimeter Ratio [2.9 %] Percentage of Warned Area Verified (15km) [23.1 %] Average Storm Based Warning Size [2245 sq km] Probability of Detection(higher is better)[0.83] False Alarm Ratio (lower is better) [0.63] Critical Success Index (higher is better) [0.34] -------------- next part -------------- An HTML attachment was scrubbed... URL: