Alert archive / Iowa / Severe Thunderstorm Warnings / 2009

Severe Thunderstorm Warnings in Iowa, May 2009

27 severe thunderstorm warnings in May 2009. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in May 2009. Tap one for its archive.

Severe Thunderstorm Warnings
27
Busiest day
May 6, 200914 severe thunderstorm warnings

Over time

By day

Days in UTC, the clock the archive keeps.

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
May 6, 8:27 AM CDTSevere Thunderstorm WarningOAXShelby33 min
May 6, 9:34 AM CDTSevere Thunderstorm WarningFSDDickinson26 min
May 6, 2:33 PM CDTSevere Thunderstorm WarningOAXHarrison, Monona27 min
May 6, 2:34 PM CDTSevere Thunderstorm WarningFSDPlymouth, Woodbury41 min
May 6, 3:05 PM CDTSevere Thunderstorm WarningOAXHarrison, Shelby40 min
May 6, 3:07 PM CDTSevere Thunderstorm WarningFSDWoodbury23 min
May 6, 3:08 PM CDTSevere Thunderstorm WarningDMXSac52 min
May 6, 3:29 PM CDTSevere Thunderstorm WarningDMXCrawford61 min
May 6, 3:30 PM CDTSevere Thunderstorm WarningFSDWoodbury15 min
May 6, 3:52 PM CDTSevere Thunderstorm WarningOAXHarrison, Pottawattamie38 min
May 6, 4:28 PM CDTSevere Thunderstorm WarningOAXMills, Montgomery, Pottawattamie47 min
May 6, 5:01 PM CDTSevere Thunderstorm WarningOAXMills, Montgomery, Page44 min
May 6, 5:15 PM CDTSevere Thunderstorm WarningFSDClay, Dickinson, Osceola45 min
May 6, 6:23 PM CDTSevere Thunderstorm WarningFSDBuena Vista, Clay19 min
May 7, 4:10 PM CDTSevere Thunderstorm WarningDMXDecatur, Wayne50 min
May 8, 5:15 PM CDTSevere Thunderstorm WarningDMXMarshall, Tama45 min
May 8, 5:27 PM CDTSevere Thunderstorm WarningDMXMarshall, Poweshiek, Tama32 min
May 8, 5:57 PM CDTSevere Thunderstorm WarningDVNIowa, Johnson, Linn63 min
May 8, 6:18 PM CDTSevere Thunderstorm WarningDVNKeokuk, Washington57 min
May 8, 6:26 PM CDTSevere Thunderstorm WarningDMXMonroe22 min
May 8, 6:46 PM CDTSevere Thunderstorm WarningDMXWapello29 min
May 8, 7:07 PM CDTSevere Thunderstorm WarningDVNHenry, Louisa, Washington41 min
May 8, 7:40 PM CDTSevere Thunderstorm WarningDVNLouisa, Muscatine49 min
May 8, 7:57 PM CDTSevere Thunderstorm WarningDVNDes Moines, Louisa63 min
May 13, 4:07 PM CDTSevere Thunderstorm WarningDMXJasper, Marion, Polk, Warren38 min
May 15, 4:12 PM CDTSevere Thunderstorm WarningOAXHarrison, Pottawattamie, Shelby26 min
May 31, 6:53 PM CDTSevere Thunderstorm WarningOAXFremont, Mills52 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

Nearby

Alerts in force nowTornadoes on recordThe radar archive20082010

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.