Alert archive / Iowa / 2020

Weather alerts in Iowa, May 2020

182 weather alerts in May 2020, 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 2020. Tap one for its archive.

Alerts: 182
Warnings: 81
Watches: 19
Advisories: 20
Busiest day: May 26, 202038 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 5, 8:39 AM CDT	Wind Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	9 hr
May 5, 9:26 AM CDT	Wind Advisory	DMX	Adair, Adams, Audubon, Cass, Decatur, Ringgold and 2 more	9 hr
May 5, 2:23 PM CDT	Special Weather Statement	OAX	Fremont	82 min
May 7, 3:24 AM CDT	Freeze Watch	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 14 more	24 hr
May 7, 3:49 AM CDT	Freeze Watch	FSD	Clay, Dickinson, O'Brien, Plymouth, Sioux	12 hr
May 7, 3:49 AM CDT	Freeze Warning	FSD	Lyon, Osceola	29 hr
May 7, 4:00 AM CDT	Freeze Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	23 hr
May 7, 9:48 AM CDT	Freeze Watch	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	17 hr
May 7, 3:31 PM CDT	Frost Advisory	FSD	Clay, Dickinson, O'Brien, Plymouth, Sioux	17 hr
May 8, 2:54 AM CDT	Frost Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	29 hr
May 8, 3:13 AM CDT	Freeze Warning	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	29 hr
May 8, 3:16 AM CDT	Frost Advisory	DVN	Jefferson, Lee, Van Buren	29 hr
May 8, 3:16 AM CDT	Freeze Warning	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 12 more	29 hr
May 8, 3:23 AM CDT	Frost Advisory	DMX	Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 25 more	29 hr
May 8, 3:23 AM CDT	Freeze Warning	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 14 more	29 hr
May 8, 3:32 AM CDT	Frost Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	28 hr
May 9, 3:38 AM CDT	Freeze Warning	FSD	Lyon, O'Brien, Osceola, Sioux	29 hr
May 10, 2:49 AM CDT	Freeze Warning	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	28 hr
May 10, 2:51 AM CDT	Freeze Warning	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	29 hr
May 10, 2:54 AM CDT	Freeze Warning	DMX	Adair, Adams, Audubon, Boone, Bremer, Butler and 23 more	28 hr
May 10, 4:20 AM CDT	Freeze Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	28 hr
May 10, 2:36 PM CDT	Frost Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	16 hr
May 10, 2:47 PM CDT	Frost Advisory	DMX	Appanoose, Black Hawk, Clarke, Davis, Decatur, Grundy and 16 more	16 hr
May 11, 2:02 PM CDT	Frost Advisory	DVN	Benton, Buchanan, Clinton, Delaware, Dubuque, Jackson and 2 more	18 hr
May 11, 2:30 PM CDT	Freeze Warning	FSD	Dickinson, Osceola	18 hr
May 11, 2:41 PM CDT	Freeze Warning	ARX	Allamakee, Howard, Mitchell, Winneshiek	17 hr
May 11, 3:27 PM CDT	Frost Advisory	ARX	Chickasaw, Clayton, Fayette, Floyd	17 hr
May 11, 9:24 PM CDT	Frost Advisory	FSD	Clay, Lyon, O'Brien, Sioux	11 hr
May 11, 9:30 PM CDT	Frost Advisory	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 11 more	11 hr
May 13, 7:59 PM CDT	Special Weather Statement	DVN	Clinton	46 min
May 13, 11:48 PM CDT	Mesoscale Discussion	SPC	Adams, Decatur, Fremont, Mills, Montgomery, Page and 2 more	2 hr
May 14, 5:47 AM CDT	Dense Fog Advisory	OAX	Harrison, Pottawattamie, Shelby	3 hr
May 14, 11:38 AM CDT	Flash Flood Watch	DVN	Cedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 9 more	19 hr
May 14, 12:26 PM CDT	Flash Flood Watch	DMX	Davis, Wapello	11 hr
May 14, 2:36 PM CDT	Special Weather Statement	DMX	Guthrie	54 min
May 14, 3:35 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	40 min
May 14, 3:45 PM CDT	Special Weather Statement	DMX	Adair, Madison	45 min
May 14, 3:55 PM CDT	Mesoscale Discussion	SPC	Appanoose, Clarke, Davis, Decatur, Jefferson, Lucas and 6 more	95 min
May 14, 3:57 PM CDT	Special Weather Statement	DMX	Clarke, Madison, Marion, Warren	48 min
May 14, 4:08 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Warren	52 min
May 14, 4:14 PM CDT	Special Weather Statement	DMX	Dallas, Polk	61 min
May 14, 4:24 PM CDT	Severe Thunderstorm Watch	SPC	Appanoose, Clarke, Dallas, Davis, Decatur, Jasper and 13 more	9 hr
May 14, 4:28 PM CDT	Special Weather Statement	DMX	Madison	32 min
May 14, 4:46 PM CDT	Tornado Warning	DMX	Clarke, Lucas, Marion, Warren	29 min
May 14, 5:01 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Warren	29 min
May 14, 5:14 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe, Warren	46 min
May 14, 5:19 PM CDT	Mesoscale Discussion	SPC	Des Moines, Henry, Jefferson, Lee, Louisa, Muscatine and 3 more	116 min
May 14, 5:29 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Marion, Warren	31 min
May 14, 5:44 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Union, Warren	31 min
May 14, 5:57 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion, Monroe	48 min
May 14, 6:01 PM CDT	Mesoscale Discussion	SPC	Appanoose, Clarke, Decatur, Lucas, Ringgold, Wayne	119 min
May 14, 6:13 PM CDT	Special Weather Statement	DMX	Decatur, Monroe, Wapello, Wayne	62 min
May 14, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	Cedar, Clinton, Des Moines, Henry, Iowa, Jefferson and 8 more	8 hr
May 14, 6:20 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Monroe, Wapello	40 min
May 14, 6:33 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Keokuk	57 min
May 14, 6:56 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Monroe, Wapello	49 min
May 14, 7:15 PM CDT	Special Weather Statement	DMX	Decatur, Lucas, Monroe, Ringgold, Wapello, Wayne	60 min
May 14, 7:24 PM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Keokuk, Washington	51 min
May 14, 7:39 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Louisa, Washington	36 min
May 14, 8:11 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Louisa, Washington	49 min
May 14, 8:12 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Wapello	18 min
May 14, 8:22 PM CDT	Mesoscale Discussion	SPC	Appanoose, Davis, Wayne	113 min
May 14, 8:36 PM CDT	Severe Thunderstorm Warning	DVN	Louisa, Muscatine	39 min
May 14, 9:12 PM CDT	Severe Thunderstorm Warning	DVN	Muscatine, Scott	33 min
May 14, 9:27 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Lee	33 min
May 14, 9:37 PM CDT	Flash Flood Warning	DVN	Henry, Jefferson, Van Buren	5 hr
May 14, 9:38 PM CDT	Mesoscale Discussion	SPC	Des Moines, Louisa, Muscatine	52 min
May 14, 10:42 PM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	33 min
May 15, 2:48 AM CDT	Dense Fog Advisory	DMX	Adair, Appanoose, Black Hawk, Boone, Bremer, Clarke and 20 more	4 hr
May 15, 2:52 AM CDT	Dense Fog Advisory	ARX	Clayton, Fayette	5 hr
May 15, 3:00 AM CDT	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Delaware, Dubuque, Iowa and 8 more	4 hr
May 16, 5:47 PM CDT	Severe Thunderstorm Warning	OAX	Mills	43 min
May 16, 6:10 PM CDT	Tornado Warning	OAX	Mills	35 min
May 16, 6:45 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Boone, Carroll and 36 more	90 min
May 16, 7:22 PM CDT	Special Weather Statement	DMX	Union	38 min
May 16, 9:01 PM CDT	Special Weather Statement	OAX	Montgomery	29 min
May 16, 9:49 PM CDT	Special Weather Statement	OAX	Montgomery	26 min
May 16, 10:35 PM CDT	Severe Thunderstorm Warning	DMX	Greene, Guthrie	25 min
May 17, 6:39 PM CDT	River Flood Warning	FSD	Clay, Dickinson	13 days
May 18, 9:40 AM CDT	River Flood Warning	FSD	Clay	14 days
May 18, 1:57 PM CDT	River Flood Warning	FSD	Clay	12 days
May 23, 5:08 AM CDT	Special Weather Statement	DVN	Keokuk	37 min
May 23, 5:46 AM CDT	Special Weather Statement	DVN	Iowa, Jefferson, Keokuk	29 min
May 23, 6:22 AM CDT	Special Weather Statement	DVN	Washington	23 min
May 23, 6:29 AM CDT	Severe Thunderstorm Warning	DVN	Keokuk, Washington	31 min
May 23, 9:11 AM CDT	Special Weather Statement	DVN	Linn	34 min
May 23, 9:23 AM CDT	Special Weather Statement	DVN	Cedar	37 min
May 23, 10:02 AM CDT	Special Weather Statement	DVN	Scott	28 min
May 23, 11:29 AM CDT	Mesoscale Discussion	SPC	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 14 more	2 hr
May 23, 12:18 PM CDT	Tornado Warning	DVN	Cedar, Johnson	42 min
May 23, 12:33 PM CDT	Tornado Watch	SPC	Allamakee, Buchanan, Cedar, Clayton, Clinton, Delaware and 10 more	8 hr
May 23, 12:39 PM CDT	Tornado Warning	DVN	Cedar, Clinton	51 min
May 23, 12:50 PM CDT	Tornado Warning Tornado observed	DVN	Cedar, Jones	40 min
May 23, 12:59 PM CDT	Tornado Warning	DVN	Scott	46 min
May 23, 1:17 PM CDT	Tornado Warning	DVN	Clinton, Jackson	43 min
May 23, 1:18 PM CDT	Tornado Warning Tornado observed	DVN	Cedar, Jones	18 min
May 23, 1:29 PM CDT	Tornado Warning	DVN	Jones	16 min
May 23, 1:54 PM CDT	Tornado Warning	DVN	Jackson	38 min
May 23, 2:27 PM CDT	Tornado Warning Tornado observed	DVN	Jackson	34 min
May 23, 2:51 PM CDT	Mesoscale Discussion	SPC	Benton, Buchanan, Cedar, Clayton, Clinton, Delaware and 7 more	84 min
May 23, 11:58 PM CDT	Severe Thunderstorm Watch	SPC	Cherokee, Harrison, Ida, Lyon, Mills, Monona and 6 more	6 hr
May 24, 1:56 AM CDT	Dense Fog Advisory	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 4 more	6 hr
May 24, 1:57 AM CDT	Dense Fog Advisory	DVN	Benton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more	6 hr
May 24, 2:00 AM CDT	Dense Fog Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	7 hr
May 24, 3:50 AM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	55 min
May 24, 4:00 AM CDT	Flash Flood Watch	OAX	Fremont, Mills, Montgomery, Page	39 hr
May 24, 4:13 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 56 more	62 min
May 24, 4:26 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona, Pottawattamie	49 min
May 24, 5:12 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona, Pottawattamie, Shelby	33 min
May 24, 5:30 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Appanoose, Audubon, Boone, Carroll and 31 more	4 hr
May 24, 5:38 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	52 min
May 24, 5:47 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Montgomery, Page	43 min
May 24, 6:26 AM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills, Montgomery, Page	49 min
May 24, 1:13 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Boone, Cass and 21 more	92 min
May 24, 1:40 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Appanoose, Audubon, Boone, Carroll and 32 more	6 hr
May 24, 3:25 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Carroll, Cass and 19 more	95 min
May 24, 3:48 PM CDT	Severe Thunderstorm Warning	DMX	Davis	57 min
May 24, 3:52 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	53 min
May 24, 4:50 PM CDT	Special Weather Statement	DVN	Van Buren	40 min
May 24, 6:09 PM CDT	Special Weather Statement	DMX	Jasper, Polk, Warren	36 min
May 24, 8:18 PM CDT	Special Weather Statement	DMX	Madison	57 min
May 25, 5:09 PM CDT	Special Weather Statement	DVN	Cedar	36 min
May 25, 5:24 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall	37 min
May 25, 5:31 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Wayne	44 min
May 25, 5:52 PM CDT	Special Weather Statement	DVN	Des Moines, Henry, Lee	23 min
May 25, 6:32 PM CDT	Tornado Warning Tornado observed	DMX	Polk	28 min
May 25, 6:44 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Hamilton, Hardin, Wright	31 min
May 25, 6:49 PM CDT	Special Weather Statement	DVN	Delaware	41 min
May 25, 7:18 PM CDT	Special Weather Statement	DVN	Muscatine	27 min
May 25, 7:46 PM CDT	Special Weather Statement	DVN	Keokuk	44 min
May 25, 8:33 PM CDT	Special Weather Statement	DVN	Johnson	27 min
May 25, 8:35 PM CDT	Special Weather Statement	DVN	Linn	25 min
May 25, 8:58 PM CDT	Special Weather Statement	DVN	Linn	32 min
May 25, 9:37 PM CDT	Special Weather Statement	DVN	Buchanan	38 min
May 26, 3:45 AM CDT	Flash Flood Watch	OAX	Fremont, Mills, Montgomery, Page	12 hr
May 26, 12:29 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Boone, Clarke, Dallas and 24 more	2 hr
May 26, 12:49 PM CDT	Special Weather Statement	DVN	Benton	26 min
May 26, 1:20 PM CDT	Tornado Watch	SPC	Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 52 more	7 hr
May 26, 1:25 PM CDT	Tornado Warning Tornado observed	DMX	Dallas	35 min
May 26, 1:38 PM CDT	Special Weather Statement	DVN	Des Moines, Iowa, Louisa, Washington	22 min
May 26, 1:44 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Washington	31 min
May 26, 1:49 PM CDT	Tornado Warning	DMX	Boone, Dallas	26 min
May 26, 2:01 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson	32 min
May 26, 2:17 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque	13 min
May 26, 2:22 PM CDT	Tornado Warning	DMX	Poweshiek, Tama	38 min
May 26, 2:25 PM CDT	Tornado Warning	DMX	Boone, Webster	35 min
May 26, 2:53 PM CDT	Special Weather Statement	DVN	Johnson	37 min
May 26, 3:03 PM CDT	Special Weather Statement	DVN	Lee	27 min
May 26, 3:17 PM CDT	Special Weather Statement	DVN	Muscatine	28 min
May 26, 3:37 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Muscatine	38 min
May 26, 3:47 PM CDT	Tornado Warning	DMX	Humboldt, Wright	13 min
May 26, 3:53 PM CDT	Mesoscale Discussion	SPC	Adair, Boone, Butler, Calhoun, Cerro Gordo, Dallas and 24 more	67 min
May 26, 3:57 PM CDT	Tornado Warning	DMX	Audubon, Guthrie	21 min
May 26, 4:06 PM CDT	Special Weather Statement	DVN	Jones	24 min
May 26, 4:23 PM CDT	Special Weather Statement	DMX	Mahaska	22 min
May 26, 4:35 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson	25 min
May 26, 4:41 PM CDT	Special Weather Statement	DVN	Delaware	34 min
May 26, 4:54 PM CDT	Special Weather Statement	DVN	Linn	36 min
May 26, 5:16 PM CDT	Tornado Warning	DMX	Franklin, Wright	29 min
May 26, 5:20 PM CDT	Special Weather Statement	ARX	Allamakee	55 min
May 26, 5:41 PM CDT	Special Weather Statement	DVN	Muscatine	34 min
May 26, 5:45 PM CDT	Special Weather Statement	ARX	Allamakee	60 min
May 26, 6:02 PM CDT	Mesoscale Discussion	SPC	Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 10 more	88 min
May 26, 6:09 PM CDT	Special Weather Statement	DMX	Cerro Gordo, Worth	51 min
May 26, 6:30 PM CDT	Severe Thunderstorm Warning	DMX	Worth	30 min
May 26, 6:55 PM CDT	Special Weather Statement	DVN	Dubuque	35 min
May 26, 10:41 PM CDT	River Flood Warning	FSD	Clay	42 hr
May 27, 6:23 PM CDT	Special Weather Statement	DVN	Iowa	37 min
May 27, 8:46 PM CDT	Special Weather Statement	DVN	Jones	29 min
May 27, 8:48 PM CDT	River Flood Warning	OAX	Fremont	49 hr
May 27, 8:56 PM CDT	Special Weather Statement	DVN	Dubuque	49 min
May 28, 3:32 AM CDT	Flash Flood Watch	DVN	Benton, Buchanan, Cedar, Delaware, Dubuque, Henry and 8 more	15 hr
May 28, 3:42 AM CDT	Flash Flood Watch	DMX	Appanoose, Davis, Lucas, Mahaska, Marion, Monroe and 4 more	13 hr
May 28, 3:47 AM CDT	Flash Flood Watch	ARX	Allamakee, Clayton, Fayette	10 hr
May 28, 9:22 AM CDT	Flash Flood Warning	DVN	Buchanan, Delaware	6 hr
May 28, 10:41 AM CDT	Flash Flood Warning	DMX	Black Hawk, Bremer	6 hr
May 28, 2:37 PM CDT	River Flood Watch	DVN	Clinton, Scott	42 hr
May 28, 3:10 PM CDT	Flash Flood Warning	DVN	Clinton, Jackson	5 hr
May 28, 8:27 PM CDT	River Flood Warning	DVN	Benton, Iowa	21 days
May 29, 4:32 AM CDT	River Flood Warning	DMX	Black Hawk	45 hr
May 29, 9:34 AM CDT	River Flood Warning	DVN	Cedar, Louisa, Muscatine	6 days
May 30, 8:33 AM CDT	River Flood Warning	DVN	Clinton, Scott	21 days

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	38
Tornado Warning	19
Severe Thunderstorm Watch	5
Tornado Watch	2
Mesoscale Discussion	15
Special Weather Statement	47
Flooding
Flash Flood Warning	4
River Flood Warning	9
Flash Flood Watch	7
River Flood Watch	1
Cold
Freeze Warning	11
Freeze Watch	4
Frost Advisory	11
Wind and dust
Wind Advisory	2
Fog and smoke
Dense Fog Advisory	7

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 2019 2021

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.