Alert archive / Iowa / 2026

Weather alerts in Iowa, May 2026

266 weather alerts in May 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in May 2026. Tap one for its archive.

Alerts: 266
Warnings: 184
Watches: 16
Advisories: 17
Busiest day: May 18, 202688 alerts

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, 2:16 AM CDT	Frost Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 13 more	30 hr
May 1, 2:25 AM CDT	Frost Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	11 hr
May 1, 2:25 AM CDT	Freeze Warning	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	30 hr
May 1, 2:34 AM CDT	Frost Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	29 hr
May 1, 12:36 PM CDT	Frost Advisory	OAX	Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more	19 hr
May 1, 12:36 PM CDT	Freeze Warning	OAX	Monona	19 hr
May 1, 1:06 PM CDT	Freeze Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	19 hr
May 1, 1:19 PM CDT	Freeze Warning	DMX	Boone, Bremer, Butler, Calhoun, Carroll, Cerro Gordo and 16 more	19 hr
May 4, 3:33 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Scott	27 min
May 4, 3:42 PM CDT	Mesoscale Discussion	SPC	Clinton, Scott	2 hr
May 4, 4:26 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Muscatine	34 min
May 4, 4:46 PM CDT	Special Weather Statement	DVN	Scott	44 min
May 4, 4:56 PM CDT	Special Weather Statement	DVN	Louisa, Muscatine	34 min
May 4, 5:08 PM CDT	Severe Thunderstorm Warning	DVN	Scott	37 min
May 4, 5:17 PM CDT	Special Weather Statement	DVN	Des Moines	43 min
May 4, 5:33 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines	42 min
May 4, 6:22 PM CDT	Special Weather Statement	DVN	Des Moines, Henry, Jefferson, Lee, Van Buren	38 min
May 4, 6:34 PM CDT	Mesoscale Discussion	SPC	Davis, Des Moines, Henry, Jefferson, Lee, Van Buren	86 min
May 4, 6:55 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines	49 min
May 4, 7:10 PM CDT	Special Weather Statement	DVN	Lee, Van Buren	65 min
May 4, 7:36 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Lee	54 min
May 5, 1:08 PM CDT	Frost Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	19 hr
May 5, 1:19 PM CDT	Frost Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 3 more	18 hr
May 5, 1:31 PM CDT	Frost Advisory	DMX	Bremer, Butler, Cerro Gordo, Emmet, Franklin, Hancock and 7 more	18 hr
May 6, 1:09 PM CDT	Frost Advisory	ARX	Allamakee, Clayton, Fayette, Winneshiek	19 hr
May 6, 1:17 PM CDT	Frost Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more	19 hr
May 10, 11:57 AM CDT	Frost Advisory	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 8 more	20 hr
May 10, 11:57 AM CDT	Frost Advisory	DVN	Buchanan, Delaware, Dubuque	19 hr
May 10, 12:00 PM CDT	Frost Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	20 hr
May 10, 1:08 PM CDT	Frost Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 2 more	19 hr
May 11, 3:07 PM CDT	Red Flag Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	30 hr
May 12, 3:46 PM CDT	Wind Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	4 hr
May 13, 1:54 PM CDT	Red Flag Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	30 hr
May 15, 3:55 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 53 more	2 hr
May 15, 5:16 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Allamakee, Audubon, Black Hawk, Boone and 67 more	8 hr
May 15, 5:23 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	9 min
May 15, 5:27 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Palo Alto	48 min
May 15, 5:53 PM CDT	Severe Thunderstorm Warning	OAX	Mills	52 min
May 15, 5:54 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Kossuth	51 min
May 15, 5:55 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	50 min
May 15, 6:05 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	40 min
May 15, 6:08 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, O'Brien, Plymouth, Sioux	52 min
May 15, 6:14 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	24 min
May 15, 6:29 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Sac	46 min
May 15, 6:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie	45 min
May 15, 6:31 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista	29 min
May 15, 6:33 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Hancock, Kossuth, Winnebago	57 min
May 15, 6:45 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Ida, Woodbury	45 min
May 15, 6:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Calhoun, Humboldt, Pocahontas, Webster	44 min
May 15, 6:47 PM CDT	Severe Thunderstorm Warning	FSD	Clay, O'Brien	43 min
May 15, 6:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Adair, Adams, Cass, Ringgold, Taylor, Union	53 min
May 15, 6:55 PM CDT	Severe Thunderstorm Warning	DMX	Sac	50 min
May 15, 7:13 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Pocahontas	32 min
May 15, 7:18 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Wright	57 min
May 15, 7:18 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay	42 min
May 15, 7:23 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock, Worth	67 min
May 15, 7:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Adair, Adams, Clarke, Decatur, Madison, Ringgold and 1 more	63 min
May 15, 7:29 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Allamakee, Audubon, Black Hawk, Boone and 62 more	2 hr
May 15, 7:31 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Humboldt, Kossuth, Winnebago	59 min
May 15, 7:31 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Pocahontas, Webster	19 min
May 15, 7:31 PM CDT	Severe Thunderstorm Warning	FSD	Ida, Woodbury	44 min
May 15, 7:36 PM CDT	Severe Thunderstorm Warning	DMX	Sac	24 min
May 15, 7:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Humboldt, Kossuth, Pocahontas	68 min
May 15, 7:54 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Kossuth, Palo Alto	23 min
May 15, 7:58 PM CDT	Severe Thunderstorm Warning	DMX	Sac	47 min
May 15, 8:06 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Madison, Marion, Warren and 1 more	39 min
May 15, 8:09 PM CDT	Severe Thunderstorm Warning Destructive damage threat	DMX	Cerro Gordo, Franklin, Hancock, Wright	66 min
May 15, 8:13 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien	35 min
May 15, 8:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Hancock, Kossuth, Winnebago	41 min
May 15, 8:15 PM CDT	Severe Thunderstorm Warning	ARX	Floyd	45 min
May 15, 8:16 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Hamilton, Humboldt, Webster, Wright	49 min
May 15, 8:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Buena Vista, Cherokee	63 min
May 15, 8:33 PM CDT	Severe Thunderstorm Warning	FSD	Ida	14 min
May 15, 8:35 PM CDT	Tornado Warning	ARX	Floyd	11 min
May 15, 8:46 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd	44 min
May 15, 8:53 PM CDT	Tornado Warning	DMX	Cerro Gordo	18 min
May 15, 9:07 PM CDT	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 15 more	113 min
May 15, 9:19 PM CDT	Severe Thunderstorm Warning	DMX	Pocahontas	26 min
May 15, 9:43 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	47 min
May 15, 9:51 PM CDT	Special Weather Statement	ARX	Winneshiek	24 min
May 15, 10:07 PM CDT	Special Weather Statement	ARX	Winneshiek	23 min
May 15, 10:07 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin, Grundy, Hardin	22 min
May 15, 10:14 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler	46 min
May 15, 10:14 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	34 min
May 15, 10:24 PM CDT	Severe Thunderstorm Warning	ARX	Fayette	51 min
May 15, 10:25 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	11 min
May 15, 10:27 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan	48 min
May 15, 10:29 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton, Winneshiek	46 min
May 15, 10:33 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 5 more	4 hr
May 15, 10:53 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 45 more	2 hr
May 15, 10:57 PM CDT	Severe Thunderstorm Warning	ARX	Clayton	48 min
May 15, 11:00 PM CDT	Severe Thunderstorm Warning	DVN	Delaware	41 min
May 15, 11:06 PM CDT	Severe Thunderstorm Warning	ARX	Clayton	24 min
May 15, 11:17 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Hardin	31 min
May 16, 2:43 AM CDT	Special Weather Statement	DVN	Jefferson, Van Buren	47 min
May 16, 3:17 AM CDT	Special Weather Statement	DVN	Des Moines, Henry, Louisa	43 min
May 16, 3:20 PM CDT	Mesoscale Discussion	SPC	Adams, Clarke, Decatur, Fremont, Montgomery, Page and 3 more	85 min
May 16, 4:19 PM CDT	Severe Thunderstorm Warning	DMX	Adams	26 min
May 16, 4:32 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Montgomery, Page	43 min
May 16, 4:40 PM CDT	Tornado Watch	SPC	Adair, Adams, Appanoose, Cass, Clarke, Decatur and 11 more	6 hr
May 16, 4:42 PM CDT	Severe Thunderstorm Warning	OAX	Page	28 min
May 16, 4:48 PM CDT	Severe Thunderstorm Warning	DMX	Taylor	27 min
May 16, 5:00 PM CDT	Severe Thunderstorm Warning	DMX	Adams	30 min
May 16, 5:08 PM CDT	Severe Thunderstorm Watch	SPC	Pottawattamie	9 hr
May 16, 5:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Montgomery	51 min
May 16, 5:14 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	31 min
May 16, 5:24 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	21 min
May 16, 5:24 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Pottawattamie	51 min
May 16, 5:34 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	41 min
May 16, 5:37 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Taylor	38 min
May 16, 5:52 PM CDT	Tornado Warning	DMX	Taylor	13 min
May 16, 6:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Adams, Taylor	43 min
May 16, 6:04 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Ringgold, Taylor	41 min
May 16, 6:12 PM CDT	Tornado Warning	DMX	Ringgold, Taylor	48 min
May 16, 6:12 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	30 min
May 16, 6:34 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	26 min
May 16, 6:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Decatur, Ringgold	59 min
May 16, 6:46 PM CDT	Mesoscale Discussion	SPC	Adams, Appanoose, Clarke, Decatur, Montgomery, Ringgold and 3 more	89 min
May 16, 6:49 PM CDT	Flash Flood Warning	OAX	Montgomery	3 hr
May 16, 6:52 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	23 min
May 16, 7:20 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	25 min
May 16, 7:35 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Ringgold	36 min
May 16, 7:41 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	34 min
May 16, 8:43 PM CDT	Flood Watch	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie	6 hr
May 16, 9:07 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	38 min
May 16, 10:01 PM CDT	Flood Watch	DMX	Adams, Decatur, Ringgold, Taylor, Wayne	10 hr
May 16, 10:08 PM CDT	High Wind Warning	DMX	Clarke, Jasper, Lucas, Madison, Mahaska, Marion and 3 more	5 hr
May 16, 10:22 PM CDT	Special Weather Statement	DVN	Buchanan, Delaware	53 min
May 16, 11:06 PM CDT	Special Weather Statement	DVN	Delaware	54 min
May 16, 11:14 PM CDT	Severe Thunderstorm Warning	FSD	Clay, O'Brien	16 min
May 17, 12:28 AM CDT	Special Weather Statement	DVN	Van Buren	47 min
May 17, 1:10 AM CDT	Flash Flood Warning	FSD	Plymouth	4 hr
May 17, 11:52 AM CDT	Flood Watch	OAX	Fremont, Mills, Montgomery, Page	34 hr
May 17, 1:11 PM CDT	Mesoscale Discussion	SPC	Cherokee, Harrison, Ida, Lyon, Monona, O'Brien and 4 more	2 hr
May 17, 1:42 PM CDT	Tornado Watch	SPC	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more	8 hr
May 17, 3:16 PM CDT	Tornado Watch	SPC	Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more	8 hr
May 17, 3:31 PM CDT	Mesoscale Discussion	SPC	Lyon, O'Brien, Osceola, Sioux	89 min
May 17, 4:18 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lyon	42 min
May 17, 4:27 PM CDT	Tornado Warning	FSD	Lyon	48 min
May 17, 4:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lyon	49 min
May 17, 5:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Lyon, Osceola	62 min
May 17, 5:45 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Cerro Gordo, Clay, Emmet, Floyd, Franklin and 10 more	60 min
May 17, 5:56 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	27 min
May 17, 6:12 PM CDT	Tornado Watch	SPC	Bremer, Butler, Cerro Gordo, Chickasaw, Emmet, Fayette and 13 more	6 hr
May 17, 6:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Dickinson, Osceola	75 min
May 17, 6:33 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	57 min
May 17, 6:53 PM CDT	Mesoscale Discussion	SPC	Cherokee, Crawford, Fremont, Harrison, Ida, Mills and 6 more	67 min
May 17, 7:20 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	28 min
May 17, 7:20 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Osceola	26 min
May 17, 7:26 PM CDT	Tornado Warning	FSD	Woodbury	49 min
May 17, 7:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Harrison, Monona	48 min
May 17, 7:32 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Cherokee, Ida, Plymouth, Woodbury	58 min
May 17, 7:40 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Calhoun, Carroll and 29 more	65 min
May 17, 7:47 PM CDT	Tornado Warning	FSD	Cherokee, Plymouth, Woodbury	43 min
May 17, 7:49 PM CDT	Mesoscale Discussion	SPC	Cerro Gordo, Emmet, Floyd, Franklin, Hancock, Howard and 7 more	56 min
May 17, 8:00 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Osceola, Plymouth, Sioux	45 min
May 17, 8:00 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	45 min
May 17, 8:03 PM CDT	Flash Flood Warning	FSD	Plymouth, Sioux	3 hr
May 17, 8:04 PM CDT	Tornado Warning	OAX	Harrison, Pottawattamie	26 min
May 17, 8:07 PM CDT	Tornado Watch	SPC	Adair, Adams, Audubon, Black Hawk, Boone, Calhoun and 29 more	5 hr
May 17, 8:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Harrison, Mills, Pottawattamie, Shelby	64 min
May 17, 8:14 PM CDT	Tornado Warning	OAX	Pottawattamie	29 min
May 17, 8:18 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Cherokee, Clay, Emmet, Humboldt, Ida and 5 more	27 min
May 17, 8:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Calhoun, Palo Alto, Pocahontas, Sac	56 min
May 17, 8:21 PM CDT	Severe Thunderstorm Warning Destructive damage threat	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 3 more	54 min
May 17, 8:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Harrison, Shelby	65 min
May 17, 8:26 PM CDT	Tornado Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien	28 min
May 17, 8:28 PM CDT	Tornado Warning	OAX	Harrison, Pottawattamie	25 min
May 17, 8:29 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	46 min
May 17, 8:34 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Crawford, Greene, Sac	56 min
May 17, 8:35 PM CDT	Tornado Warning	DMX	Calhoun, Pocahontas, Sac	40 min
May 17, 8:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Harrison, Monona	33 min
May 17, 8:46 PM CDT	Tornado Warning	OAX	Mills	29 min
May 17, 8:48 PM CDT	Tornado Warning	FSD	Clay, Dickinson	27 min
May 17, 8:54 PM CDT	Tornado Warning	FSD	Clay, Dickinson	51 min
May 17, 8:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Harrison, Monona, Pottawattamie, Shelby	64 min
May 17, 8:59 PM CDT	Tornado Warning	DMX	Emmet, Palo Alto	46 min
May 17, 9:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Calhoun, Hamilton, Humboldt, Kossuth, Palo Alto, Pocahontas and 2 more	43 min
May 17, 9:03 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Fremont, Mills, Montgomery, Page	72 min
May 17, 9:05 PM CDT	Tornado Warning Tornado observed	DMX	Calhoun, Hamilton, Humboldt, Pocahontas, Webster, Wright	40 min
May 17, 9:06 PM CDT	Tornado Warning	OAX	Mills, Montgomery, Pottawattamie	39 min
May 17, 9:08 PM CDT	Tornado Warning	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	52 min
May 17, 9:12 PM CDT	Tornado Warning	DMX	Calhoun, Hamilton, Webster	48 min
May 17, 9:15 PM CDT	Tornado Warning	DMX	Emmet	30 min
May 17, 9:26 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Boone, Calhoun, Carroll, Crawford, Dallas and 5 more	79 min
May 17, 9:28 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DMX	Cerro Gordo, Emmet, Franklin, Hancock, Humboldt, Kossuth and 4 more	62 min
May 17, 9:30 PM CDT	Tornado Warning Tornado observed	DMX	Emmet, Kossuth, Palo Alto, Winnebago	45 min
May 17, 9:30 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Butler, Calhoun and 37 more	90 min
May 17, 9:31 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	59 min
May 17, 9:35 PM CDT	Tornado Warning	DMX	Cerro Gordo, Hancock, Kossuth, Winnebago, Worth	40 min
May 17, 9:42 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Franklin, Hamilton, Hardin, Humboldt, Webster and 1 more	63 min
May 17, 9:45 PM CDT	Tornado Warning	DMX	Franklin, Hamilton, Hardin, Humboldt, Webster, Wright	45 min
May 17, 9:56 PM CDT	Tornado Warning	DMX	Hamilton, Hardin, Webster	38 min
May 17, 10:00 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	30 min
May 17, 10:06 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Montgomery, Page	54 min
May 17, 10:07 PM CDT	Tornado Warning Tornado observed	DMX	Cerro Gordo, Hancock, Winnebago, Worth	38 min
May 17, 10:09 PM CDT	Severe Thunderstorm Warning	ARX	Floyd, Mitchell	66 min
May 17, 10:11 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Cerro Gordo, Franklin, Hancock, Wright	37 min
May 17, 10:13 PM CDT	Tornado Warning	ARX	Mitchell	62 min
May 17, 10:19 PM CDT	Tornado Warning	DMX	Cerro Gordo	26 min
May 17, 10:23 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison, Polk, Warren	24 min
May 17, 10:24 PM CDT	Tornado Warning	ARX	Floyd, Mitchell	51 min
May 17, 10:32 PM CDT	Mesoscale Discussion	SPC	Allamakee, Black Hawk, Boone, Bremer, Buchanan, Butler and 14 more	118 min
May 17, 10:49 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Howard	56 min
May 17, 10:54 PM CDT	Tornado Warning	ARX	Chickasaw, Howard	51 min
May 17, 11:10 PM CDT	Severe Thunderstorm Watch	SPC	Allamakee, Appanoose, Benton, Buchanan, Cedar, Clayton and 13 more	5 hr
May 17, 11:40 PM CDT	Severe Thunderstorm Warning	ARX	Winneshiek	28 min
May 17, 11:53 PM CDT	Special Weather Statement	DVN	Benton, Buchanan	37 min
May 18, 12:07 AM CDT	Special Weather Statement	ARX	Allamakee	38 min
May 18, 1:24 AM CDT	Mesoscale Discussion	SPC	Appanoose, Cedar, Davis, Dubuque, Henry, Iowa and 12 more	96 min
May 18, 2:26 AM CDT	Special Weather Statement	DVN	Henry, Jefferson, Van Buren	34 min
May 18, 2:54 AM CDT	Special Weather Statement	DVN	Scott	36 min
May 18, 3:15 AM CDT	Special Weather Statement	DVN	Lee	45 min
May 18, 3:46 AM CDT	Special Weather Statement	DVN	Scott	44 min
May 18, 3:47 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	32 min
May 18, 6:51 AM CDT	Mesoscale Discussion	SPC	Des Moines, Henry, Lee	84 min
May 18, 10:51 AM CDT	Flood Watch	DMX	Adams, Clarke, Decatur, Ringgold, Taylor, Union and 1 more	16 hr
May 18, 3:29 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Cass, Clarke, Decatur and 12 more	2 hr
May 18, 3:49 PM CDT	Tornado Watch	SPC	Adair, Adams, Appanoose, Cass, Clarke, Davis and 21 more	6 hr
May 18, 4:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Fremont	43 min
May 18, 4:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Fremont, Page	66 min
May 18, 4:58 PM CDT	Severe Thunderstorm Warning	OAX	Monona	21 min
May 18, 5:02 PM CDT	Areal Flood Advisory	OAX	Fremont, Page	5 hr
May 18, 5:06 PM CDT	Tornado Warning	OAX	Fremont, Page	54 min
May 18, 5:10 PM CDT	Mesoscale Discussion	SPC	Cherokee, Lyon, Monona, O'Brien, Osceola, Plymouth and 2 more	95 min
May 18, 5:11 PM CDT	Severe Thunderstorm Warning	FSD	Cherokee, Ida, Plymouth, Woodbury	49 min
May 18, 5:13 PM CDT	Severe Thunderstorm Warning	OAX	Page	62 min
May 18, 5:34 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	56 min
May 18, 5:40 PM CDT	Tornado Warning	DMX	Taylor	65 min
May 18, 5:48 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Buena Vista, Cherokee, Clay, O'Brien	42 min
May 18, 6:08 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	37 min
May 18, 6:18 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	31 min
May 18, 6:22 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor, Union	53 min
May 18, 6:31 PM CDT	Tornado Warning	DMX	Ringgold, Taylor	59 min
May 18, 6:37 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	14 min
May 18, 7:06 PM CDT	Tornado Warning Tornado observed	DMX	Clarke, Decatur, Ringgold, Union	39 min
May 18, 7:16 PM CDT	Tornado Warning	DMX	Ringgold, Taylor	44 min
May 18, 7:18 PM CDT	Severe Thunderstorm Warning	OAX	Page	32 min
May 18, 7:29 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Shelby	26 min
May 18, 7:39 PM CDT	Tornado Warning	DMX	Jasper, Marion, Polk, Warren	41 min
May 18, 7:41 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk, Warren	49 min
May 18, 8:08 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Polk, Story	52 min
May 18, 8:18 PM CDT	Tornado Warning	DMX	Jasper, Marshall	16 min
May 18, 8:54 PM CDT	Mesoscale Discussion	SPC	Appanoose, Clarke, Decatur, Jasper, Lucas, Mahaska and 7 more	3 hr
May 18, 9:06 PM CDT	Tornado Warning	DMX	Poweshiek, Tama	16 min
May 18, 9:17 PM CDT	Flash Flood Warning	DMX	Decatur, Ringgold, Taylor	6 hr
May 18, 9:35 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Buchanan, Delaware, Henry, Iowa, Jefferson and 6 more	4 hr
May 19, 12:44 AM CDT	Special Weather Statement	DVN	Des Moines, Lee	46 min
May 19, 2:43 AM CDT	Frost Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	29 hr
May 19, 11:31 AM CDT	Frost Advisory	OAX	Monona	20 hr
May 22, 5:24 PM CDT	Mesoscale Discussion	SPC	Fremont, Harrison, Mills, Monona, Pottawattamie	2 hr
May 22, 5:47 PM CDT	Tornado Warning Tornado observed	OAX	Mills	43 min
May 22, 6:07 PM CDT	Tornado Warning	FSD	Woodbury	38 min
May 22, 7:17 PM CDT	Special Weather Statement	DMX	Crawford	28 min
May 24, 3:34 PM CDT	Mesoscale Discussion	SPC	Lyon, Sioux	86 min
May 24, 4:53 PM CDT	Severe Thunderstorm Watch	SPC	Lyon, O'Brien, Osceola, Plymouth, Sioux	6 hr
May 24, 6:49 PM CDT	Mesoscale Discussion	SPC	Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 2 more	116 min
May 24, 8:48 PM CDT	Mesoscale Discussion	SPC	Cherokee, Dickinson, Lyon, O'Brien, Osceola, Plymouth and 2 more	87 min
May 24, 10:42 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	48 min
May 24, 11:29 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	46 min
May 25, 1:12 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	48 min
May 25, 7:13 PM CDT	Mesoscale Discussion	SPC	Buena Vista, Cherokee, Clay, Dickinson, Emmet, Humboldt and 12 more	92 min
May 26, 12:41 AM CDT	Severe Thunderstorm Warning	DMX	Emmet	16 min
May 26, 8:08 PM CDT	Special Weather Statement	DMX	Worth	67 min
May 31, 2:43 AM CDT	Flash Flood Warning	DMX	Taylor	3 hr
May 31, 3:20 PM CDT	Mesoscale Discussion	SPC	Lyon, Plymouth, Sioux	2 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	132
Tornado Warning	40
Severe Thunderstorm Watch	6
Tornado Watch	6
Mesoscale Discussion	28
Special Weather Statement	21
Flooding
Flash Flood Warning	5
Flood Watch	4
Areal Flood Advisory	1
Cold
Freeze Warning	4
Frost Advisory	15
Wind and dust
High Wind Warning	1
Wind Advisory	1
Fire
Red Flag Warning	2

By county

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

59 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2025

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.