Iowa Environmental Mesonet

Iowa State University Department of Agronomy

The GIS page has everything GIS on the IEM

Storm Based Warning Geometry Statistics

Pick a time period of your choice and get back a summary table of storm based warning polygon statistics. You should be able to highlight this table and paste it into Excel, if you wish.
Perimeter values are in kilometers and area values in square kilometers.
Links: Download shapefile of these warnings - View visual summaries

YearMonthDayHour
Start:
End:
Data valid for warnings issued between 22 Nov 2009 00:00 and 23 Nov 2009 00:00 GMT
Weather Forecast Office Summary Tornado Severe Thunderstorm Marine Flash Flood Areal Flood
IDName CntPerimArea CntPerimArea CntPerimArea CntPerimArea CntPerimArea CntPerimArea
CHSCHARLESTON 00.00.0 0.00.0 0.00.0 2149.71382.8 0.00.0 0.00.0
JAXJACKSONVILLE 2114.0581.8 0.00.0 2114.0581.8 0.00.0 0.00.0 0.00.0
MLBMELBOURNE 1112.5398.1 0.00.0 1112.5398.1 1213.82553.7 0.00.0 0.00.0
MOBMOBILE 00.00.0 0.00.0 0.00.0 2140.61066.6 0.00.0 0.00.0
TAETALLAHASSEE 00.00.0 0.00.0 0.00.0 1186.81895.1 0.00.0 0.00.0
TBWTAMPA_BAY_AREA/RUSKIN 162.3241.4 0.00.0 162.3241.4 0.00.0 0.00.0 0.00.0