Alert archive / Iowa / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Iowa, 2009

438 severe thunderstorm warnings in 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 2009. Tap one for its archive.

Severe Thunderstorm Warnings: 438
Busiest month: June160 severe thunderstorm warnings
Busiest day: June 18, 200943 severe thunderstorm warnings

Over time

By month

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
Feb 17, 11:34 PM CST	Severe Thunderstorm Warning	DMX	Wapello	26 min
Feb 26, 8:34 AM CST	Severe Thunderstorm Warning	OAX	Monona	41 min
Feb 26, 9:05 AM CST	Severe Thunderstorm Warning	FSD	Ida, Woodbury	25 min
Feb 26, 10:43 AM CST	Severe Thunderstorm Warning	OAX	Pottawattamie, Shelby	36 min
Feb 26, 11:20 AM CST	Severe Thunderstorm Warning	DVN	Clinton, Jackson	40 min
Feb 26, 11:22 AM CST	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Greene	23 min
Feb 26, 11:42 AM CST	Severe Thunderstorm Warning	DMX	Adair, Cass	33 min
Feb 26, 12:32 PM CST	Severe Thunderstorm Warning	DMX	Dallas, Jasper, Madison, Polk	43 min
Feb 26, 12:45 PM CST	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	30 min
Feb 26, 1:07 PM CST	Severe Thunderstorm Warning	DVN	Benton	38 min
Feb 26, 1:21 PM CST	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Wapello	39 min
Mar 7, 1:46 AM CST	Severe Thunderstorm Warning	DVN	Lee, Van Buren	29 min
Mar 7, 2:13 AM CST	Severe Thunderstorm Warning	DVN	Des Moines, Lee	32 min
Mar 7, 2:40 AM CST	Severe Thunderstorm Warning	DVN	Des Moines	17 min
Mar 7, 6:51 PM CST	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Van Buren	39 min
Mar 7, 8:10 PM CST	Severe Thunderstorm Warning	DVN	Jefferson	35 min
Mar 7, 8:34 PM CST	Severe Thunderstorm Warning	DVN	Jefferson, Washington	23 min
Mar 7, 9:31 PM CST	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Van Buren	44 min
Mar 23, 4:53 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	52 min
Mar 23, 5:36 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	24 min
Mar 23, 5:43 PM CDT	Severe Thunderstorm Warning	OAX	Monona	17 min
Mar 23, 5:44 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	31 min
Mar 23, 6:17 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Lyon, O'Brien, Plymouth, Sioux, Woodbury	43 min
Mar 23, 6:18 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	57 min
Mar 23, 6:39 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	66 min
Mar 23, 6:44 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	46 min
Mar 23, 7:19 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	41 min
Mar 23, 8:45 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	30 min
Mar 23, 9:03 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	30 min
Mar 23, 9:07 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison, Union	23 min
Mar 23, 9:29 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison, Polk	31 min
Mar 23, 9:58 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Madison, Polk, Warren	32 min
Apr 24, 5:16 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock	44 min
Apr 24, 5:18 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Humboldt, Wright	42 min
Apr 24, 5:58 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	47 min
Apr 24, 6:00 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Wright	45 min
Apr 24, 6:16 PM CDT	Severe Thunderstorm Warning	ARX	Howard, Mitchell	44 min
Apr 24, 6:24 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Wright	36 min
Apr 24, 6:32 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Guthrie	58 min
Apr 24, 6:37 PM CDT	Severe Thunderstorm Warning	ARX	Floyd	38 min
Apr 24, 6:44 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Webster	46 min
Apr 24, 6:48 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin	24 min
Apr 24, 6:52 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Pottawattamie	25 min
Apr 24, 7:03 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin	42 min
Apr 24, 7:09 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Hardin, Webster	51 min
Apr 24, 7:14 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd	46 min
Apr 24, 7:29 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Cass, Dallas, Guthrie	46 min
Apr 24, 7:42 PM CDT	Severe Thunderstorm Warning	DMX	Bremer, Butler	63 min
Apr 24, 8:12 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison	48 min
Apr 24, 8:27 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Union	48 min
Apr 24, 8:59 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison	46 min
Apr 24, 9:17 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Union	43 min
Apr 24, 11:04 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Union, Warren	41 min
Apr 25, 1:08 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	52 min
Apr 25, 7:28 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Warren	24 min
Apr 26, 9:06 AM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	39 min
Apr 26, 10:40 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Madison, Union	32 min
Apr 26, 1:49 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	41 min
Apr 26, 2:09 PM CDT	Severe Thunderstorm Warning	DMX	Cass	51 min
Apr 26, 3:01 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	59 min
Apr 26, 3:42 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Cass	48 min
Apr 26, 4:34 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery	28 min
Apr 26, 4:41 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Linn	23 min
Apr 26, 4:58 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Guthrie	47 min
Apr 26, 6:04 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold, Union	41 min
Apr 26, 6:23 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Tama	37 min
Apr 26, 6:36 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Marion, Warren	39 min
Apr 26, 6:39 PM CDT	Severe Thunderstorm Warning	DMX	Marion, Polk, Warren	51 min
Apr 26, 6:50 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Decatur, Lucas, Monroe, Wayne	40 min
Apr 26, 6:56 PM CDT	Severe Thunderstorm Warning	DMX	Tama	26 min
Apr 26, 6:58 PM CDT	Severe Thunderstorm Warning	DMX	Marion	47 min
May 6, 8:27 AM CDT	Severe Thunderstorm Warning	OAX	Shelby	33 min
May 6, 9:34 AM CDT	Severe Thunderstorm Warning	FSD	Dickinson	26 min
May 6, 2:33 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	27 min
May 6, 2:34 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	41 min
May 6, 3:05 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Shelby	40 min
May 6, 3:07 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	23 min
May 6, 3:08 PM CDT	Severe Thunderstorm Warning	DMX	Sac	52 min
May 6, 3:29 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	61 min
May 6, 3:30 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	15 min
May 6, 3:52 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie	38 min
May 6, 4:28 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	47 min
May 6, 5:01 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Page	44 min
May 6, 5:15 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, Osceola	45 min
May 6, 6:23 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay	19 min
May 7, 4:10 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Wayne	50 min
May 8, 5:15 PM CDT	Severe Thunderstorm Warning	DMX	Marshall, Tama	45 min
May 8, 5:27 PM CDT	Severe Thunderstorm Warning	DMX	Marshall, Poweshiek, Tama	32 min
May 8, 5:57 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Linn	63 min
May 8, 6:18 PM CDT	Severe Thunderstorm Warning	DVN	Keokuk, Washington	57 min
May 8, 6:26 PM CDT	Severe Thunderstorm Warning	DMX	Monroe	22 min
May 8, 6:46 PM CDT	Severe Thunderstorm Warning	DMX	Wapello	29 min
May 8, 7:07 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Louisa, Washington	41 min
May 8, 7:40 PM CDT	Severe Thunderstorm Warning	DVN	Louisa, Muscatine	49 min
May 8, 7:57 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Louisa	63 min
May 13, 4:07 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	38 min
May 15, 4:12 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	26 min
May 31, 6:53 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	52 min
May 31, 9:57 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford	33 min
May 31, 10:41 PM CDT	Severe Thunderstorm Warning	DVN	Benton	49 min
Jun 1, 3:09 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Montgomery, Page	23 min
Jun 1, 4:30 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Louisa	60 min
Jun 1, 6:20 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold	40 min
Jun 1, 6:50 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose	40 min
Jun 7, 12:12 AM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	53 min
Jun 7, 12:50 AM CDT	Severe Thunderstorm Warning	DMX	Cass	39 min
Jun 7, 1:10 AM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	51 min
Jun 7, 1:12 AM CDT	Severe Thunderstorm Warning	DMX	Adair	48 min
Jun 7, 2:02 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Page	43 min
Jun 7, 4:30 AM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jackson, Jones, Linn	45 min
Jun 7, 7:38 AM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	35 min
Jun 7, 11:48 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	42 min
Jun 7, 4:54 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Cass	49 min
Jun 7, 5:29 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie	46 min
Jun 7, 5:58 PM CDT	Severe Thunderstorm Warning	DMX	Dallas	47 min
Jun 7, 6:45 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	45 min
Jun 7, 7:08 PM CDT	Severe Thunderstorm Warning	DMX	Polk	37 min
Jun 7, 8:24 PM CDT	Severe Thunderstorm Warning	DMX	Tama	51 min
Jun 7, 8:47 PM CDT	Severe Thunderstorm Warning	DVN	Benton	58 min
Jun 7, 9:47 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Linn	32 min
Jun 7, 9:55 PM CDT	Severe Thunderstorm Warning	DMX	Davis	50 min
Jun 7, 10:26 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Van Buren	64 min
Jun 7, 11:09 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Louisa, Muscatine, Washington	51 min
Jun 7, 11:38 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	22 min
Jun 7, 11:56 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold	38 min
Jun 8, 12:02 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Cass	43 min
Jun 8, 12:22 AM CDT	Severe Thunderstorm Warning	OAX	Fremont	25 min
Jun 8, 12:38 AM CDT	Severe Thunderstorm Warning	DMX	Decatur, Ringgold	21 min
Jun 16, 9:55 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	50 min
Jun 16, 10:47 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	43 min
Jun 17, 10:40 AM CDT	Severe Thunderstorm Warning	DMX	Winnebago, Worth	65 min
Jun 17, 7:25 PM CDT	Severe Thunderstorm Warning	ARX	Howard, Mitchell	65 min
Jun 17, 8:15 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	31 min
Jun 17, 8:29 PM CDT	Severe Thunderstorm Warning	ARX	Howard, Winneshiek	46 min
Jun 17, 9:30 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Guthrie	45 min
Jun 17, 9:47 PM CDT	Severe Thunderstorm Warning	ARX	Howard	45 min
Jun 17, 9:50 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Fayette	25 min
Jun 17, 10:04 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison, Union	41 min
Jun 17, 10:15 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Guthrie	45 min
Jun 17, 10:38 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	37 min
Jun 17, 10:43 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	32 min
Jun 17, 10:46 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison	44 min
Jun 17, 10:49 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Howard, Winneshiek	56 min
Jun 17, 10:59 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	46 min
Jun 17, 11:07 PM CDT	Severe Thunderstorm Warning	DMX	Jasper	41 min
Jun 17, 11:14 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford, Sac	46 min
Jun 17, 11:27 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Madison	48 min
Jun 17, 11:31 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Fayette, Winneshiek	57 min
Jun 18, 12:00 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Crawford, Sac	45 min
Jun 18, 12:12 AM CDT	Severe Thunderstorm Warning	ARX	Fayette	34 min
Jun 18, 12:12 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Madison, Warren	48 min
Jun 18, 12:17 AM CDT	Severe Thunderstorm Warning	DMX	Crawford, Sac	37 min
Jun 18, 12:31 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas	29 min
Jun 18, 12:35 AM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe, Warren, Wayne	40 min
Jun 18, 12:43 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Greene, Guthrie, Sac	47 min
Jun 18, 1:18 AM CDT	Severe Thunderstorm Warning	DMX	Lucas, Mahaska, Marion, Monroe, Wapello	42 min
Jun 18, 1:41 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Polk, Story	49 min
Jun 18, 1:44 AM CDT	Severe Thunderstorm Warning	DMX	Marion, Warren	46 min
Jun 18, 1:47 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Washington	58 min
Jun 18, 2:07 AM CDT	Severe Thunderstorm Warning	DMX	Polk, Warren	23 min
Jun 18, 2:11 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion	39 min
Jun 18, 2:24 AM CDT	Severe Thunderstorm Warning	DMX	Monroe, Wapello	51 min
Jun 18, 2:32 AM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe, Warren	28 min
Jun 18, 2:48 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Lee, Van Buren	42 min
Jun 18, 5:43 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux, Woodbury	47 min
Jun 18, 6:49 AM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Ida	26 min
Jun 18, 7:16 AM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay	29 min
Jun 18, 7:24 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Humboldt, Pocahontas, Webster	36 min
Jun 18, 7:34 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Sac, Webster	41 min
Jun 18, 7:39 AM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	36 min
Jun 18, 8:03 AM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Humboldt, Webster, Wright	42 min
Jun 18, 9:05 AM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin, Marshall, Story	25 min
Jun 18, 10:37 AM CDT	Severe Thunderstorm Warning	DVN	Benton, Jones, Linn	53 min
Jun 18, 11:57 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Scott	45 min
Jun 18, 9:30 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	45 min
Jun 18, 9:56 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	42 min
Jun 18, 11:28 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Winneshiek	32 min
Jun 18, 11:47 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton	28 min
Jun 19, 3:00 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Mills, Pottawattamie	45 min
Jun 19, 3:34 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona, Pottawattamie, Shelby	26 min
Jun 19, 4:18 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	42 min
Jun 19, 4:32 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Guthrie	43 min
Jun 19, 4:43 AM CDT	Severe Thunderstorm Warning	DMX	Cass	37 min
Jun 19, 5:57 AM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hamilton, Hardin, Marshall, Story	48 min
Jun 19, 6:24 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Tama	51 min
Jun 19, 6:27 AM CDT	Severe Thunderstorm Warning	DMX	Marshall, Tama	48 min
Jun 19, 7:00 AM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	60 min
Jun 19, 7:14 AM CDT	Severe Thunderstorm Warning	DMX	Tama	16 min
Jun 19, 7:28 AM CDT	Severe Thunderstorm Warning	DVN	Buchanan	32 min
Jun 19, 7:45 AM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Dubuque, Jones, Linn	60 min
Jun 19, 8:17 AM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jackson, Jones	58 min
Jun 19, 8:33 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	57 min
Jun 19, 9:02 AM CDT	Severe Thunderstorm Warning	DVN	Dubuque	58 min
Jun 19, 3:50 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	40 min
Jun 19, 4:15 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Mahaska, Wapello	27 min
Jun 19, 4:19 PM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	56 min
Jun 19, 4:24 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Van Buren, Washington	54 min
Jun 19, 4:42 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Keokuk, Louisa, Muscatine, Washington	46 min
Jun 19, 5:03 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee, Louisa	72 min
Jun 19, 5:03 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Louisa, Muscatine, Scott, Washington	57 min
Jun 19, 5:28 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Muscatine, Scott	62 min
Jun 22, 1:55 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Lee, Van Buren	50 min
Jun 22, 2:45 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Lee, Van Buren	60 min
Jun 23, 10:05 AM CDT	Severe Thunderstorm Warning	FSD	Lyon	25 min
Jun 23, 12:04 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	41 min
Jun 23, 12:10 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	50 min
Jun 23, 1:31 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	44 min
Jun 23, 1:39 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Greene, Sac	51 min
Jun 23, 2:40 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Wright	50 min
Jun 23, 2:49 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Winnebago, Worth, Wright	41 min
Jun 23, 3:02 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	43 min
Jun 23, 3:14 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Cerro Gordo, Franklin, Hardin	46 min
Jun 23, 3:23 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene	52 min
Jun 23, 3:23 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	52 min
Jun 23, 3:25 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy, Hardin	50 min
Jun 23, 3:35 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Polk	55 min
Jun 23, 3:40 PM CDT	Severe Thunderstorm Warning	OAX	Shelby	50 min
Jun 23, 3:48 PM CDT	Severe Thunderstorm Warning	DMX	Polk, Story	57 min
Jun 23, 4:01 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Marshall, Tama	44 min
Jun 23, 4:09 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy	51 min
Jun 23, 4:12 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk	48 min
Jun 23, 4:18 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Story, Tama	57 min
Jun 23, 4:18 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Delaware, Iowa, Johnson, Linn	87 min
Jun 23, 4:20 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	55 min
Jun 23, 4:28 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie, Madison	62 min
Jun 23, 4:33 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Guthrie	42 min
Jun 23, 4:42 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Jasper, Marshall, Poweshiek, Tama	48 min
Jun 23, 4:47 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	43 min
Jun 23, 4:50 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Dallas, Guthrie	40 min
Jun 23, 4:58 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer	16 min
Jun 23, 4:58 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe, Warren	47 min
Jun 23, 5:00 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	45 min
Jun 23, 5:11 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	49 min
Jun 23, 5:13 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass, Madison, Union	47 min
Jun 23, 5:19 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Keokuk, Washington	71 min
Jun 23, 5:27 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie, Madison	33 min
Jun 23, 5:39 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Cedar, Delaware, Dubuque, Johnson, Jones and 2 more	51 min
Jun 23, 5:42 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Monroe, Wapello	48 min
Jun 23, 6:02 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Clarke, Madison, Union, Warren	28 min
Jun 23, 6:06 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Louisa, Van Buren, Washington	69 min
Jun 23, 6:17 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	44 min
Jun 23, 6:28 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis	32 min
Jun 23, 6:47 PM CDT	Severe Thunderstorm Warning	DMX	Decatur	28 min
Jun 23, 6:48 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Lee	72 min
Jun 24, 3:33 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	16 min
Jun 24, 6:39 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Webster	36 min
Jun 24, 7:15 AM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Webster	30 min
Jun 24, 3:13 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Page	47 min
Jun 24, 3:54 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	33 min
Jun 25, 12:24 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	36 min
Jun 25, 12:54 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	51 min
Jun 25, 3:54 PM CDT	Severe Thunderstorm Warning	DVN	Clinton	30 min
Jun 27, 4:01 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque, Jackson, Jones	59 min
Jun 27, 4:39 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Louisa, Muscatine	66 min
Jun 27, 4:45 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jackson, Jones, Scott	60 min
Jun 27, 4:55 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	44 min
Jun 27, 5:25 PM CDT	Severe Thunderstorm Warning	DVN	Scott	65 min
Jun 27, 6:15 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Lee	60 min
Jul 7, 7:51 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	39 min
Jul 7, 8:02 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	43 min
Jul 7, 8:23 PM CDT	Severe Thunderstorm Warning	FSD	Clay, O'Brien	52 min
Jul 7, 8:39 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay	51 min
Jul 7, 8:44 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	46 min
Jul 7, 8:58 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	32 min
Jul 7, 8:59 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Palo Alto	46 min
Jul 7, 9:53 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	37 min
Jul 7, 10:22 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	38 min
Jul 7, 11:29 PM CDT	Severe Thunderstorm Warning	OAX	Monona	46 min
Jul 8, 12:36 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Mills, Pottawattamie	39 min
Jul 8, 1:13 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Pottawattamie	47 min
Jul 8, 1:49 AM CDT	Severe Thunderstorm Warning	OAX	Fremont	41 min
Jul 9, 8:29 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	61 min
Jul 9, 8:47 AM CDT	Severe Thunderstorm Warning	OAX	Monona	58 min
Jul 9, 9:41 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	49 min
Jul 9, 11:14 AM CDT	Severe Thunderstorm Warning	FSD	Sioux	31 min
Jul 9, 2:02 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	28 min
Jul 9, 2:29 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola, Sioux	31 min
Jul 9, 2:48 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	27 min
Jul 9, 3:14 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	17 min
Jul 9, 3:15 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	30 min
Jul 9, 3:38 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, O'Brien	21 min
Jul 9, 3:46 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth	12 min
Jul 9, 6:15 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay	30 min
Jul 9, 6:30 PM CDT	Severe Thunderstorm Warning	FSD	Clay	30 min
Jul 9, 6:48 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	42 min
Jul 9, 7:19 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	41 min
Jul 9, 7:44 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola	46 min
Jul 9, 7:52 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Osceola	38 min
Jul 9, 8:24 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, O'Brien, Osceola	51 min
Jul 9, 8:57 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Palo Alto	48 min
Jul 9, 9:15 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	45 min
Jul 9, 9:42 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Palo Alto	48 min
Jul 9, 10:51 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	39 min
Jul 10, 1:30 AM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	32 min
Jul 10, 2:54 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler	36 min
Jul 10, 3:06 AM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	54 min
Jul 10, 3:27 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy	48 min
Jul 10, 4:05 AM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Delaware, Linn	55 min
Jul 10, 4:58 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Marshall, Tama	47 min
Jul 10, 5:00 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Delaware, Dubuque, Jackson, Jones, Linn	60 min
Jul 10, 5:10 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	35 min
Jul 10, 6:36 AM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee	25 min
Jul 10, 8:02 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Hamilton, Webster	43 min
Jul 10, 8:10 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Crawford, Greene, Sac	50 min
Jul 10, 8:29 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Hamilton, Story	46 min
Jul 10, 8:45 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene, Guthrie	29 min
Jul 10, 8:51 AM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Jones, Linn	54 min
Jul 10, 9:10 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Polk, Story	50 min
Jul 10, 9:36 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall	39 min
Jul 10, 10:52 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	53 min
Jul 12, 10:36 AM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie, Shelby	39 min
Jul 12, 11:30 AM CDT	Severe Thunderstorm Warning	OAX	Harrison	45 min
Jul 12, 11:52 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	38 min
Jul 14, 7:42 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	33 min
Jul 14, 7:51 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Palo Alto	54 min
Jul 14, 8:00 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee	45 min
Jul 14, 8:19 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	26 min
Jul 14, 8:27 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Ida	33 min
Jul 14, 8:48 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth, Winnebago	42 min
Jul 14, 9:20 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock, Winnebago, Worth	55 min
Jul 14, 10:48 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene, Guthrie	46 min
Jul 14, 11:23 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Polk	52 min
Jul 14, 11:38 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	22 min
Jul 14, 11:41 PM CDT	Severe Thunderstorm Warning	ARX	Fayette	49 min
Jul 15, 12:00 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk, Story	46 min
Jul 15, 12:22 AM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion, Monroe	38 min
Jul 15, 12:29 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	46 min
Jul 15, 1:02 AM CDT	Severe Thunderstorm Warning	DMX	Davis, Wapello	43 min
Jul 15, 2:03 AM CDT	Severe Thunderstorm Warning	DMX	Davis	42 min
Jul 21, 6:03 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Webster	42 min
Jul 22, 5:55 PM CDT	Severe Thunderstorm Warning	DMX	Pocahontas	50 min
Jul 22, 6:31 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Pocahontas, Webster	44 min
Jul 22, 6:49 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	29 min
Jul 23, 5:56 AM CDT	Severe Thunderstorm Warning	DMX	Appanoose	49 min
Jul 24, 12:11 PM CDT	Severe Thunderstorm Warning	ARX	Howard, Winneshiek	64 min
Jul 24, 12:40 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Chickasaw, Clayton, Fayette, Howard, Winneshiek	65 min
Jul 24, 1:32 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	58 min
Jul 24, 1:48 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	27 min
Jul 24, 1:55 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Dubuque	65 min
Jul 24, 2:47 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones	40 min
Jul 24, 3:07 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	53 min
Jul 24, 3:42 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	63 min
Jul 24, 4:24 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	66 min
Jul 24, 5:10 PM CDT	Severe Thunderstorm Warning	ARX	Fayette, Winneshiek	65 min
Jul 24, 5:36 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton, Fayette	69 min
Jul 24, 6:19 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	41 min
Jul 24, 6:20 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque, Jackson	70 min
Jul 24, 6:22 PM CDT	Severe Thunderstorm Warning	ARX	Fayette	53 min
Jul 24, 6:27 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Dubuque	63 min
Jul 24, 6:44 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	54 min
Jul 24, 6:53 PM CDT	Severe Thunderstorm Warning	DVN	Jackson	82 min
Jul 24, 7:30 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware, Dubuque, Jackson, Jones, Linn	60 min
Jul 24, 7:41 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	64 min
Jul 24, 7:48 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Cedar, Clinton, Jones, Linn	62 min
Jul 24, 8:43 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Cedar, Iowa, Johnson, Jones, Linn and 1 more	62 min
Jul 24, 8:46 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	89 min
Jul 24, 9:18 PM CDT	Severe Thunderstorm Warning	DVN	Keokuk, Louisa, Washington	57 min
Jul 24, 9:54 PM CDT	Severe Thunderstorm Warning	DVN	Johnson, Muscatine	43 min
Jul 29, 4:12 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Woodbury	24 min
Aug 2, 9:16 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	44 min
Aug 2, 10:57 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	48 min
Aug 2, 11:12 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	33 min
Aug 2, 11:26 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien, Plymouth, Sioux	34 min
Aug 2, 11:32 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Plymouth, Woodbury	28 min
Aug 2, 11:35 PM CDT	Severe Thunderstorm Warning	FSD	Clay, O'Brien, Osceola	40 min
Aug 2, 11:49 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien	56 min
Aug 2, 11:57 PM CDT	Severe Thunderstorm Warning	FSD	Clay	48 min
Aug 3, 12:02 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	28 min
Aug 3, 12:25 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Sac	50 min
Aug 3, 12:47 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Calhoun, Carroll, Greene, Hamilton, Humboldt and 4 more	43 min
Aug 3, 1:03 AM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	42 min
Aug 3, 1:23 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Carroll, Dallas, Greene, Guthrie, Hamilton and 5 more	35 min
Aug 3, 1:44 AM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	46 min
Aug 3, 2:25 AM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	50 min
Aug 3, 3:08 AM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford, Sac	52 min
Aug 3, 3:25 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene	38 min
Aug 3, 4:29 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Guthrie	46 min
Aug 3, 4:53 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Guthrie, Madison	52 min
Aug 4, 1:13 AM CDT	Severe Thunderstorm Warning	OAX	Fremont	35 min
Aug 4, 1:45 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	30 min
Aug 4, 5:13 AM CDT	Severe Thunderstorm Warning	OAX	Fremont	32 min
Aug 4, 6:48 AM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee, Van Buren	57 min
Aug 4, 7:26 AM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry	64 min
Aug 8, 12:42 AM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hamilton, Hardin, Marshall, Story	48 min
Aug 8, 1:42 AM CDT	Severe Thunderstorm Warning	DMX	Tama	19 min
Aug 9, 6:57 AM CDT	Severe Thunderstorm Warning	OAX	Monona	48 min
Aug 9, 7:13 AM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	62 min
Aug 9, 7:32 AM CDT	Severe Thunderstorm Warning	DMX	Crawford, Sac	43 min
Aug 9, 7:33 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Shelby	57 min
Aug 9, 8:10 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Crawford, Greene, Sac	50 min
Aug 9, 8:50 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Webster	55 min
Aug 9, 9:30 AM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Webster, Wright	60 min
Aug 9, 9:45 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Story	45 min
Aug 9, 10:07 AM CDT	Severe Thunderstorm Warning	DMX	Franklin, Grundy, Hamilton, Hardin, Marshall, Story	53 min
Aug 9, 10:38 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Butler, Grundy, Marshall, Tama	67 min
Aug 9, 11:31 AM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Linn	59 min
Aug 9, 11:46 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk	18 min
Aug 9, 12:13 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones, Linn	77 min
Aug 9, 12:34 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque, Jackson	86 min
Aug 9, 1:44 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Delaware, Jones, Linn	61 min
Aug 9, 2:39 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque	42 min
Aug 9, 4:00 PM CDT	Severe Thunderstorm Warning	DMX	Cass	45 min
Aug 9, 4:24 PM CDT	Severe Thunderstorm Warning	DMX	Adair	36 min
Aug 9, 4:28 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	50 min
Aug 9, 5:06 PM CDT	Severe Thunderstorm Warning	DMX	Dallas	39 min
Aug 9, 5:12 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	39 min
Aug 9, 5:18 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Clarke, Madison, Union, Warren	57 min
Aug 9, 5:26 PM CDT	Severe Thunderstorm Warning	DMX	Polk	49 min
Aug 9, 5:49 PM CDT	Severe Thunderstorm Warning	DMX	Marion, Warren	41 min
Aug 9, 5:52 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	38 min
Aug 9, 5:53 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Polk	52 min
Aug 9, 6:15 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Warren	45 min
Aug 9, 6:17 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold, Union	43 min
Aug 9, 6:25 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion, Poweshiek	50 min
Aug 9, 6:28 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	47 min
Aug 9, 6:33 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Tama	57 min
Aug 9, 6:47 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Keokuk	58 min
Aug 9, 6:54 PM CDT	Severe Thunderstorm Warning	DMX	Marshall, Tama	51 min
Aug 9, 7:00 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold, Union	45 min
Aug 9, 7:34 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Keokuk, Linn, Louisa and 1 more	56 min
Aug 9, 7:47 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa	58 min
Aug 9, 8:07 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Jones, Linn, Muscatine	68 min
Aug 9, 8:53 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines	52 min
Aug 13, 11:47 AM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Winnebago	40 min
Aug 13, 12:45 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth, Winnebago	30 min
Aug 19, 1:27 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee, Louisa	63 min
Aug 19, 4:30 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	30 min
Aug 19, 4:57 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	33 min
Aug 19, 5:04 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	56 min
Aug 19, 5:31 PM CDT	Severe Thunderstorm Warning	FSD	Sioux	29 min
Aug 19, 5:48 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	42 min
Aug 19, 5:49 PM CDT	Severe Thunderstorm Warning	OAX	Page	26 min
Aug 19, 7:28 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	47 min
Aug 19, 7:44 PM CDT	Severe Thunderstorm Warning	DMX	Sac	46 min
Aug 19, 8:34 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Sac	22 min
Aug 24, 11:36 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	39 min
Sep 21, 3:25 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth	33 min
Oct 1, 2:52 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jones	23 min

By county

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

59 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2008 2010

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.