Alert archive / Iowa / Severe Thunderstorm Warnings / 2011

Severe Thunderstorm Warnings in Iowa, May 2011

111 severe thunderstorm warnings in May 2011. 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 2011. Tap one for its archive.

Severe Thunderstorm Warnings: 111
Busiest day: May 22, 201140 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.

Issued	Product	Office	Counties	Lasted
May 9, 4:08 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola	52 min
May 11, 12:43 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Cass	47 min
May 11, 1:41 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery	23 min
May 11, 2:05 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	55 min
May 11, 2:51 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	39 min
May 11, 2:56 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	49 min
May 11, 3:57 PM CDT	Severe Thunderstorm Warning	OAX	Monona	48 min
May 11, 4:01 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	44 min
May 11, 4:55 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	50 min
May 11, 4:57 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	38 min
May 11, 5:32 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Ringgold, Taylor, Union	43 min
May 11, 5:37 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	38 min
May 11, 5:42 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux, Woodbury	48 min
May 11, 5:44 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Madison, Ringgold, Warren	46 min
May 11, 5:48 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	42 min
May 11, 6:06 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Clarke, Madison, Union	54 min
May 11, 6:37 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	53 min
May 11, 6:42 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Warren	48 min
May 11, 6:46 PM CDT	Severe Thunderstorm Warning	DMX	Wayne	44 min
May 11, 6:49 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	41 min
May 11, 7:07 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola	23 min
May 11, 7:27 PM CDT	Severe Thunderstorm Warning	FSD	Osceola	33 min
May 11, 7:29 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe	25 min
May 11, 7:31 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Palo Alto	29 min
May 11, 8:24 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose	29 min
May 11, 8:27 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe, Wayne	48 min
May 12, 4:44 PM CDT	Severe Thunderstorm Warning	OAX	Monona	46 min
May 12, 5:21 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	24 min
May 12, 5:45 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	45 min
May 12, 5:50 PM CDT	Severe Thunderstorm Warning	OAX	Monona	40 min
May 12, 5:53 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	52 min
May 12, 6:28 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Woodbury	47 min
May 12, 7:08 PM CDT	Severe Thunderstorm Warning	DMX	Sac	37 min
May 12, 7:12 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	28 min
May 12, 7:18 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista	42 min
May 12, 8:01 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	44 min
May 12, 8:21 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene	39 min
May 12, 8:39 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	51 min
May 12, 9:06 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Greene	39 min
May 12, 10:06 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	39 min
May 12, 10:12 PM CDT	Severe Thunderstorm Warning	DMX	Wright	48 min
May 21, 5:59 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	46 min
May 21, 6:47 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	28 min
May 21, 6:48 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Montgomery, Page	42 min
May 21, 7:07 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	38 min
May 21, 7:28 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	32 min
May 21, 7:40 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie, Shelby	50 min
May 21, 7:46 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie	44 min
May 21, 7:49 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	26 min
May 21, 7:51 PM CDT	Severe Thunderstorm Warning	DMX	Adair	39 min
May 21, 7:57 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	33 min
May 21, 8:14 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	31 min
May 21, 8:16 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	29 min
May 21, 8:16 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	44 min
May 21, 8:21 PM CDT	Severe Thunderstorm Warning	DMX	Guthrie	24 min
May 21, 8:32 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	43 min
May 21, 8:39 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison	36 min
May 21, 8:41 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	34 min
May 21, 8:57 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	33 min
May 21, 8:59 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Warren, Wayne	31 min
May 21, 9:03 PM CDT	Severe Thunderstorm Warning	DMX	Madison, Warren	27 min
May 21, 9:44 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Lucas, Monroe, Wayne	31 min
May 21, 9:51 PM CDT	Severe Thunderstorm Warning	OAX	Monona	39 min
May 21, 10:19 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	26 min
May 22, 1:38 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Poweshiek, Tama	52 min
May 22, 2:01 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa	44 min
May 22, 2:02 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	43 min
May 22, 2:03 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Howard, Mitchell	57 min
May 22, 2:06 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Keokuk, Washington	54 min
May 22, 2:29 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy	46 min
May 22, 2:34 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Linn	33 min
May 22, 3:25 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Iowa, Johnson, Jones, Linn	65 min
May 22, 3:43 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Keokuk, Washington	47 min
May 22, 4:12 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Wapello	27 min
May 22, 4:12 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jackson, Jones	63 min
May 22, 4:17 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Keokuk, Washington	43 min
May 22, 4:17 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Keokuk, Washington	43 min
May 22, 4:19 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton, Fayette	56 min
May 22, 4:32 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Johnson	58 min
May 22, 4:47 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	58 min
May 22, 4:56 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jackson, Scott	64 min
May 22, 5:25 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jackson, Muscatine, Scott	50 min
May 22, 5:28 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	62 min
May 22, 5:47 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	31 min
May 24, 3:26 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Polk, Story	34 min
May 24, 4:02 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque, Jackson, Jones	58 min
May 24, 4:44 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa	61 min
May 24, 5:08 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Linn	52 min
May 24, 5:28 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Louisa, Muscatine, Scott	47 min
May 24, 5:33 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	57 min
May 24, 5:42 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Linn	48 min
May 25, 4:08 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	52 min
May 25, 5:05 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Louisa	40 min
May 29, 4:51 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	24 min
May 29, 6:18 AM CDT	Severe Thunderstorm Warning	DMX	Madison	22 min
May 29, 6:34 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk	26 min
May 29, 8:17 AM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	43 min
May 29, 8:20 AM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Monroe, Wapello	40 min
May 29, 8:37 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Van Buren, Washington	53 min
May 29, 8:48 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Union, Warren	42 min
May 29, 9:14 AM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis	46 min
May 29, 9:18 AM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Jefferson, Johnson, Lee, Louisa and 3 more	57 min
May 29, 9:32 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Jones, Linn	58 min
May 29, 9:55 AM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	65 min
May 29, 9:58 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Des Moines, Louisa, Muscatine, Scott	62 min
May 29, 10:15 AM CDT	Severe Thunderstorm Warning	DVN	Des Moines	60 min
May 29, 10:26 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson, Scott	64 min
May 29, 10:33 AM CDT	Severe Thunderstorm Warning	DVN	Scott	57 min
May 29, 10:54 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	66 min
May 30, 11:05 PM CDT	Severe Thunderstorm Warning	OAX	Monona	40 min
May 30, 11:19 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	41 min

By county

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

41 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2010 2012

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. Rebuilt daily.