Alert archive / Iowa / Severe Thunderstorm Warnings / 2017

Severe Thunderstorm Warnings in Iowa, May 2017

123 severe thunderstorm warnings in May 2017. 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 2017. Tap one for its archive.

Severe Thunderstorm Warnings: 123
Busiest day: May 17, 201772 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 8, 2:58 AM CDT	Severe Thunderstorm Warning	DMX	Crawford	32 min
May 8, 8:41 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock	49 min
May 8, 9:28 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	47 min
May 10, 11:32 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison	28 min
May 10, 12:11 PM CDT	Severe Thunderstorm Warning	DMX	Madison, Warren	34 min
May 10, 12:13 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold, Union	47 min
May 10, 12:53 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas	37 min
May 10, 1:17 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Monroe	43 min
May 10, 1:47 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Van Buren	43 min
May 10, 1:50 PM CDT	Severe Thunderstorm Warning	DMX	Davis	10 min
May 10, 2:48 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Van Buren	42 min
May 10, 2:52 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Van Buren	7 min
May 10, 3:13 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Van Buren	33 min
May 10, 3:35 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee, Van Buren	55 min
May 15, 12:58 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Hamilton, Webster	47 min
May 15, 3:42 PM CDT	Severe Thunderstorm Warning	DMX	Worth	18 min
May 15, 4:20 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth	40 min
May 15, 4:53 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth, Pocahontas	27 min
May 15, 4:58 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock	23 min
May 15, 5:19 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Humboldt, Wright	41 min
May 15, 5:40 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	65 min
May 15, 5:55 PM CDT	Severe Thunderstorm Warning	ARX	Winneshiek	50 min
May 15, 5:58 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Cerro Gordo, Franklin, Wright	47 min
May 15, 6:31 PM CDT	Severe Thunderstorm Warning	DMX	Bremer, Butler	44 min
May 15, 6:40 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Chickasaw, Fayette, Winneshiek	65 min
May 15, 6:41 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin	34 min
May 15, 7:09 PM CDT	Severe Thunderstorm Warning	ARX	Clayton	51 min
May 15, 7:14 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler	45 min
May 15, 7:27 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton	48 min
May 15, 7:52 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque, Jackson	38 min
May 15, 8:29 PM CDT	Severe Thunderstorm Warning	DVN	Jackson	76 min
May 15, 11:04 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth, Winnebago	26 min
May 15, 11:29 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Winnebago	46 min
May 16, 4:29 AM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay, Dickinson	31 min
May 16, 6:15 PM CDT	Severe Thunderstorm Warning	OAX	Harrison	45 min
May 16, 6:18 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Mills, Pottawattamie	42 min
May 16, 6:37 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona, Pottawattamie, Shelby	38 min
May 16, 6:43 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	47 min
May 16, 7:02 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	43 min
May 16, 7:07 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	41 min
May 16, 7:10 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Shelby	65 min
May 16, 7:18 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	57 min
May 16, 7:21 PM CDT	Severe Thunderstorm Warning	OAX	Mills	24 min
May 16, 7:41 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Crawford, Sac	49 min
May 16, 7:43 PM CDT	Severe Thunderstorm Warning	FSD	Ida	33 min
May 16, 7:53 PM CDT	Severe Thunderstorm Warning	DMX	Cass	37 min
May 16, 8:15 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Greene, Sac, Webster	45 min
May 16, 8:18 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Sac	42 min
May 16, 8:22 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Carroll, Cass, Dallas, Greene and 1 more	38 min
May 16, 8:22 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista	23 min
May 16, 8:48 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Hamilton, Humboldt, Webster, Wright	42 min
May 16, 8:50 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Humboldt, Kossuth, Palo Alto, Pocahontas	40 min
May 16, 8:57 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene, Guthrie	33 min
May 16, 9:13 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	47 min
May 16, 9:18 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Greene, Guthrie	22 min
May 16, 9:19 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth, Winnebago, Worth	56 min
May 16, 9:26 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Humboldt, Kossuth, Webster and 1 more	49 min
May 16, 9:30 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Polk, Story	15 min
May 16, 9:42 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Hardin, Marshall, Story	34 min
May 16, 9:49 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Worth	26 min
May 16, 9:53 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	37 min
May 16, 10:13 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hamilton, Hardin, Marshall, Story	29 min
May 16, 10:15 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Cerro Gordo, Franklin, Worth	33 min
May 16, 10:24 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	51 min
May 16, 10:32 PM CDT	Severe Thunderstorm Warning	OAX	Page	28 min
May 16, 10:40 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Grundy, Hardin	22 min
May 16, 10:46 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	44 min
May 16, 10:51 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Howard	54 min
May 16, 11:19 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Union	26 min
May 17, 2:34 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	26 min
May 17, 2:42 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison	28 min
May 17, 3:02 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	43 min
May 17, 3:14 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer	27 min
May 17, 3:16 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Linn	43 min
May 17, 3:28 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Story	35 min
May 17, 3:29 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Clarke, Madison, Union	29 min
May 17, 3:36 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones, Linn	54 min
May 17, 3:37 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie	23 min
May 17, 3:38 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Fayette, Howard, Winneshiek	52 min
May 17, 3:45 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee, Van Buren	30 min
May 17, 3:46 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Carroll, Cass, Clarke, Dallas and 6 more	44 min
May 17, 3:47 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Marion, Union, Warren and 1 more	43 min
May 17, 4:01 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	44 min
May 17, 4:17 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene, Guthrie, Jasper, Madison and 4 more	43 min
May 17, 4:22 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	38 min
May 17, 4:23 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Washington	44 min
May 17, 4:26 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	22 min
May 17, 4:27 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Jasper, Lucas, Mahaska, Marion, Monroe and 4 more	63 min
May 17, 4:53 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Grundy, Hamilton, Hardin, Jasper, Marshall and 3 more	67 min
May 17, 5:03 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Keokuk	57 min
May 17, 5:11 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth, Webster	49 min
May 17, 5:16 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hamilton, Hancock, Hardin, Wright	59 min
May 17, 5:21 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Wapello	39 min
May 17, 5:24 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Muscatine, Scott	30 min
May 17, 5:32 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler	43 min
May 17, 5:39 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Van Buren, Washington	66 min
May 17, 5:50 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Delaware, Iowa, Johnson, Linn and 1 more	55 min
May 17, 5:53 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock, Kossuth, Winnebago, Worth	34 min
May 17, 5:54 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Van Buren	51 min
May 17, 5:57 PM CDT	Severe Thunderstorm Warning	ARX	Floyd	32 min
May 17, 6:01 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	8 min
May 17, 6:11 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw	34 min
May 17, 6:16 PM CDT	Severe Thunderstorm Warning	ARX	Mitchell	44 min
May 17, 6:16 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer	9 min
May 17, 6:23 PM CDT	Severe Thunderstorm Warning	ARX	Howard	37 min
May 17, 6:31 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Cedar, Clinton, Delaware, Dubuque, Jackson and 5 more	59 min
May 17, 6:38 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Louisa, Muscatine, Washington	52 min
May 17, 6:41 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	64 min
May 17, 6:44 PM CDT	Severe Thunderstorm Warning	ARX	Winneshiek	46 min
May 17, 6:52 PM CDT	Severe Thunderstorm Warning	ARX	Howard	10 min
May 17, 7:00 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton, Fayette, Winneshiek	75 min
May 17, 7:14 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Dubuque, Jackson, Jones, Muscatine and 1 more	61 min
May 17, 7:30 PM CDT	Severe Thunderstorm Warning	DVN	Louisa, Muscatine, Scott	45 min
May 17, 7:37 PM CDT	Severe Thunderstorm Warning	DVN	Scott	38 min
May 17, 8:05 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	55 min
May 17, 8:08 PM CDT	Severe Thunderstorm Warning	DVN	Muscatine, Scott	67 min
May 22, 7:27 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	48 min
May 27, 7:09 AM CDT	Severe Thunderstorm Warning	OAX	Fremont	36 min
May 27, 9:04 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Cass	28 min
May 27, 3:55 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	35 min
May 27, 4:27 PM CDT	Severe Thunderstorm Warning	DVN	Keokuk	63 min
May 28, 7:33 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola	27 min
May 28, 7:56 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, Lyon, O'Brien, Osceola	34 min

By county

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

55 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2016 2018

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.