Alert archive / Iowa / Severe Thunderstorm Warnings / 2012

Severe Thunderstorm Warnings in Iowa, May 2012

165 severe thunderstorm warnings in May 2012. 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 2012. Tap one for its archive.

Severe Thunderstorm Warnings: 165
Busiest day: May 4, 201235 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 1, 7:12 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	33 min
May 1, 7:41 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	34 min
May 1, 8:09 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	36 min
May 1, 9:15 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien, Plymouth, Sioux	30 min
May 1, 9:22 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson, Osceola	38 min
May 1, 9:41 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, O'Brien, Osceola	34 min
May 1, 9:59 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Palo Alto	46 min
May 1, 10:13 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay, Dickinson	17 min
May 1, 10:45 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Palo Alto	45 min
May 1, 11:24 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Webster, Wright	51 min
May 1, 11:35 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	25 min
May 2, 12:01 AM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford, Sac	44 min
May 2, 12:38 AM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford, Greene, Sac	52 min
May 2, 1:02 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	43 min
May 2, 1:07 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Carroll, Dallas, Greene, Guthrie	38 min
May 2, 1:26 AM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton	30 min
May 2, 1:27 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Story, Webster	48 min
May 2, 1:39 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Polk, Story	51 min
May 2, 1:42 AM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	33 min
May 2, 1:53 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	52 min
May 2, 2:04 AM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin, Marshall, Story	41 min
May 2, 2:37 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Marshall, Tama	36 min
May 2, 3:18 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	15 min
May 2, 4:22 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Dubuque, Jackson, Jones	38 min
May 2, 4:26 AM CDT	Severe Thunderstorm Warning	DVN	Johnson, Louisa, Muscatine, Scott	49 min
May 3, 1:56 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	34 min
May 3, 2:11 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	34 min
May 3, 2:29 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	31 min
May 3, 5:11 AM CDT	Severe Thunderstorm Warning	DMX	Butler, Cerro Gordo, Franklin	47 min
May 3, 5:44 AM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	31 min
May 3, 6:11 AM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Howard, Winneshiek	34 min
May 3, 6:43 AM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Howard, Winneshiek	47 min
May 3, 2:24 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	21 min
May 3, 2:48 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	42 min
May 3, 3:31 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth, Winnebago	44 min
May 3, 4:03 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Kossuth	42 min
May 3, 4:18 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock, Winnebago, Worth	42 min
May 3, 4:52 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	53 min
May 3, 5:06 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	39 min
May 3, 5:24 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	20 min
May 3, 6:13 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt	47 min
May 3, 6:57 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt	48 min
May 3, 7:41 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt	28 min
May 3, 7:57 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee	33 min
May 3, 8:23 PM CDT	Severe Thunderstorm Warning	DVN	Benton	15 min
May 3, 8:37 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee	38 min
May 3, 8:40 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Linn	35 min
May 3, 9:14 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Scott	31 min
May 3, 9:46 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Muscatine, Scott	43 min
May 3, 10:22 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	38 min
May 4, 12:06 AM CDT	Severe Thunderstorm Warning	DVN	Louisa, Muscatine	24 min
May 4, 2:09 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Union	51 min
May 4, 2:13 AM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	32 min
May 4, 2:45 AM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	45 min
May 4, 2:54 AM CDT	Severe Thunderstorm Warning	DMX	Adams	51 min
May 4, 3:07 AM CDT	Severe Thunderstorm Warning	DVN	Lee	38 min
May 4, 3:27 AM CDT	Severe Thunderstorm Warning	DMX	Taylor	48 min
May 4, 5:03 AM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe	42 min
May 4, 6:26 AM CDT	Severe Thunderstorm Warning	DVN	Keokuk	49 min
May 4, 3:00 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	30 min
May 4, 3:14 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	31 min
May 4, 3:18 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Osceola, Sioux	42 min
May 4, 3:39 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	36 min
May 4, 4:01 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien	29 min
May 4, 4:05 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Kossuth	55 min
May 4, 4:09 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson, Osceola	51 min
May 4, 4:12 PM CDT	Severe Thunderstorm Warning	FSD	Clay, O'Brien	33 min
May 4, 4:22 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Palo Alto	38 min
May 4, 4:25 PM CDT	Severe Thunderstorm Warning	FSD	Clay	35 min
May 4, 4:40 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	50 min
May 4, 4:59 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Kossuth, Palo Alto	46 min
May 4, 5:26 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Winnebago	49 min
May 4, 5:30 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	17 min
May 4, 5:46 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	15 min
May 4, 6:00 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock, Winnebago, Worth	60 min
May 4, 6:20 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	55 min
May 4, 6:37 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Webster, Wright	23 min
May 4, 7:15 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd, Howard	45 min
May 4, 9:39 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	36 min
May 4, 10:12 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Sioux	16 min
May 4, 10:27 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto, Pocahontas	48 min
May 5, 2:31 AM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford	33 min
May 5, 1:57 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Winnebago	33 min
May 5, 2:28 PM CDT	Severe Thunderstorm Warning	DMX	Winnebago	32 min
May 5, 2:54 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Winnebago, Worth	66 min
May 5, 3:31 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	59 min
May 5, 4:29 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd	43 min
May 6, 1:55 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	35 min
May 6, 3:27 AM CDT	Severe Thunderstorm Warning	FSD	Clay	20 min
May 6, 4:32 AM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Wright	43 min
May 6, 5:14 AM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	46 min
May 6, 5:22 AM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery	38 min
May 6, 5:44 AM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Pottawattamie	31 min
May 6, 5:52 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	53 min
May 6, 6:30 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Cass	45 min
May 6, 7:05 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	25 min
May 6, 7:09 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison	22 min
May 6, 7:29 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	31 min
May 6, 7:59 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	46 min
May 6, 8:27 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	48 min
May 6, 9:03 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion	42 min
May 6, 9:12 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion	48 min
May 15, 7:05 PM CDT	Severe Thunderstorm Warning	DVN	Scott	40 min
May 19, 5:49 AM CDT	Severe Thunderstorm Warning	OAX	Monona	26 min
May 19, 6:55 PM CDT	Severe Thunderstorm Warning	OAX	Monona	50 min
May 19, 7:18 PM CDT	Severe Thunderstorm Warning	OAX	Monona	27 min
May 19, 7:43 PM CDT	Severe Thunderstorm Warning	OAX	Monona	32 min
May 19, 7:56 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	38 min
May 19, 8:06 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	39 min
May 19, 8:28 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	47 min
May 19, 8:32 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona, Shelby	28 min
May 19, 8:44 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	31 min
May 19, 8:45 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	15 min
May 19, 9:00 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Calhoun, Carroll, Sac	27 min
May 19, 9:09 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	51 min
May 19, 9:38 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien, Plymouth	37 min
May 19, 9:38 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	37 min
May 23, 6:21 PM CDT	Severe Thunderstorm Warning	OAX	Monona	35 min
May 23, 6:53 PM CDT	Severe Thunderstorm Warning	OAX	Monona	23 min
May 23, 6:56 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	49 min
May 23, 7:10 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola	35 min
May 23, 7:16 PM CDT	Severe Thunderstorm Warning	FSD	Ida	27 min
May 23, 7:26 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Sac	49 min
May 23, 7:35 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	40 min
May 23, 8:15 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Crawford, Sac	45 min
May 23, 8:24 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie	36 min
May 23, 8:28 PM CDT	Severe Thunderstorm Warning	FSD	Osceola	32 min
May 23, 8:51 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas	39 min
May 23, 9:11 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Osceola, Sioux	34 min
May 24, 3:13 PM CDT	Severe Thunderstorm Warning	ARX	Floyd	32 min
May 24, 3:30 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin, Hardin	45 min
May 24, 3:56 PM CDT	Severe Thunderstorm Warning	DMX	Bremer, Butler, Grundy	49 min
May 24, 4:26 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Wayne	49 min
May 24, 4:27 PM CDT	Severe Thunderstorm Warning	ARX	Winneshiek	33 min
May 24, 4:30 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	19 min
May 24, 4:53 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton, Fayette, Winneshiek	37 min
May 24, 4:55 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Tama	50 min
May 24, 5:24 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan	36 min
May 24, 5:51 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion, Poweshiek	39 min
May 25, 3:05 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold	43 min
May 25, 3:39 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Ringgold	39 min
May 25, 4:23 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Wayne	27 min
May 25, 7:18 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Story	28 min
May 25, 11:46 PM CDT	Severe Thunderstorm Warning	OAX	Monona	44 min
May 26, 12:17 AM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	58 min
May 26, 12:18 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	57 min
May 26, 12:27 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	63 min
May 26, 1:06 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	39 min
May 26, 2:05 AM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	40 min
May 26, 2:46 AM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Ida, Woodbury	59 min
May 26, 3:04 AM CDT	Severe Thunderstorm Warning	DMX	Sac	41 min
May 27, 5:27 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	33 min
May 27, 5:58 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	32 min
May 27, 6:11 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	34 min
May 27, 6:24 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	36 min
May 27, 6:35 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	40 min
May 27, 7:11 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	34 min
May 27, 7:31 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Plymouth, Sioux	29 min
May 27, 7:54 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	36 min
May 27, 8:54 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	36 min
May 27, 9:18 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	27 min
May 27, 9:42 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	10 min
May 28, 4:16 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Muscatine, Scott	59 min
May 28, 5:14 PM CDT	Severe Thunderstorm Warning	DVN	Scott	61 min
May 28, 5:23 PM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	36 min

By county

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

51 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2011 2013

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.