Alert archive / Iowa / 2021

Weather alerts in Iowa, December 2021

142 weather alerts in December 2021, 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 December 2021. Tap one for its archive.

Alerts: 142
Warnings: 82
Watches: 10
Advisories: 38
Busiest day: December 15, 202152 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
Dec 4, 3:11 PM CST	Wind Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	35 hr
Dec 5, 2:43 AM CST	Wind Advisory	DMX	Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 33 more	30 hr
Dec 5, 3:03 AM CST	Wind Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	30 hr
Dec 5, 3:05 AM CST	Wind Advisory	OAX	Harrison, Monona, Pottawattamie, Shelby	20 hr
Dec 5, 3:06 AM CST	Wind Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more	33 hr
Dec 5, 12:25 PM CST	Winter Weather Advisory	ARX	Allamakee	9 hr
Dec 8, 2:41 AM CST	Winter Storm Watch	ARX	Allamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek	35 hr
Dec 8, 3:06 AM CST	Winter Storm Watch	DMX	Cerro Gordo, Emmet, Hancock, Humboldt, Kossuth, Palo Alto and 3 more	33 hr
Dec 8, 3:31 AM CST	Winter Storm Watch	FSD	Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 4 more	32 hr
Dec 9, 5:12 AM CST	Winter Weather Advisory	DVN	Benton, Buchanan, Delaware, Dubuque, Jones, Linn	4 hr
Dec 9, 5:14 AM CST	Winter Weather Advisory	DMX	Black Hawk, Boone, Bremer, Butler, Cerro Gordo, Franklin and 9 more	3 hr
Dec 9, 5:23 AM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	4 hr
Dec 9, 11:23 AM CST	Winter Storm Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 3 more	40 hr
Dec 9, 11:23 AM CST	Winter Weather Advisory	FSD	Ida, Woodbury	40 hr
Dec 9, 11:41 AM CST	Winter Storm Warning	ARX	Howard, Mitchell	45 hr
Dec 9, 11:44 AM CST	Winter Storm Warning	DMX	Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto, Pocahontas and 2 more	42 hr
Dec 9, 11:44 AM CST	Winter Weather Advisory	DMX	Black Hawk, Boone, Bremer, Butler, Calhoun, Carroll and 13 more	42 hr
Dec 9, 11:48 AM CST	Winter Weather Advisory	OAX	Harrison, Monona, Pottawattamie, Shelby	37 hr
Dec 9, 1:50 PM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 1 more	43 hr
Dec 10, 3:26 AM CST	Winter Weather Advisory	DVN	Benton, Buchanan, Delaware, Dubuque, Linn	27 hr
Dec 10, 12:27 PM CST	Mesoscale Discussion	SPC	Clay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 1 more	4 hr
Dec 10, 3:31 PM CST	Mesoscale Discussion	SPC	Clay, Dickinson, Emmet, Kossuth, Lyon, Osceola and 2 more	4 hr
Dec 10, 6:26 PM CST	Tornado Warning	DVN	Des Moines, Henry, Louisa	20 min
Dec 10, 6:52 PM CST	Special Weather Statement	DVN	Scott	53 min
Dec 13, 2:49 AM CST	High Wind Watch	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	24 hr
Dec 13, 3:25 AM CST	High Wind Watch	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	35 hr
Dec 13, 3:40 AM CST	High Wind Watch	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 40 more	24 hr
Dec 13, 2:36 PM CST	High Wind Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 14 more	24 hr
Dec 14, 2:20 AM CST	High Wind Warning	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	44 hr
Dec 14, 2:26 AM CST	Fire Weather Watch	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie	12 hr
Dec 14, 4:04 AM CST	High Wind Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	47 hr
Dec 14, 4:09 AM CST	High Wind Warning	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	47 hr
Dec 14, 2:21 PM CST	Red Flag Warning	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie	28 hr
Dec 14, 2:28 PM CST	Winter Weather Advisory	FSD	Dickinson, Lyon, Osceola	36 hr
Dec 14, 2:33 PM CST	High Wind Warning	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	39 hr
Dec 14, 2:33 PM CST	Wind Advisory	DVN	Lee	30 hr
Dec 14, 2:46 PM CST	High Wind Warning	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	39 hr
Dec 15, 2:56 AM CST	Dense Fog Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	6 hr
Dec 15, 12:28 PM CST	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 59 more	2 hr
Dec 15, 1:23 PM CST	Tornado Watch	SPC	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 64 more	7 hr
Dec 15, 3:23 PM CST	Severe Thunderstorm Warning Considerable damage threat	FSD	Plymouth, Woodbury	67 min
Dec 15, 3:35 PM CST	Severe Thunderstorm Warning Destructive damage threat	OAX	Fremont, Harrison, Mills, Pottawattamie	70 min
Dec 15, 3:41 PM CST	Severe Thunderstorm Warning Destructive damage threat	OAX	Harrison, Monona	64 min
Dec 15, 3:55 PM CST	Severe Thunderstorm Warning Destructive damage threat	OAX	Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more	80 min
Dec 15, 3:55 PM CST	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 40 more	95 min
Dec 15, 4:00 PM CST	Tornado Warning	FSD	Woodbury	45 min
Dec 15, 4:01 PM CST	Tornado Warning	OAX	Fremont, Mills	14 min
Dec 15, 4:05 PM CST	Severe Thunderstorm Warning Considerable damage threat	FSD	Buena Vista, Cherokee, Ida, Plymouth, Woodbury	55 min
Dec 15, 4:12 PM CST	Tornado Warning	OAX	Fremont, Mills	33 min
Dec 15, 4:13 PM CST	Severe Thunderstorm Warning Destructive damage threat	DMX	Adair, Adams, Audubon, Cass, Guthrie, Ringgold and 2 more	77 min
Dec 15, 4:16 PM CST	Severe Thunderstorm Warning Destructive damage threat	DMX	Carroll, Crawford, Sac	74 min
Dec 15, 4:16 PM CST	Tornado Warning	OAX	Harrison, Pottawattamie	17 min
Dec 15, 4:17 PM CST	Tornado Warning	FSD	Plymouth, Woodbury	28 min
Dec 15, 4:21 PM CST	Tornado Warning	OAX	Pottawattamie	24 min
Dec 15, 4:26 PM CST	Severe Thunderstorm Warning Considerable damage threat	FSD	Plymouth, Woodbury	34 min
Dec 15, 4:30 PM CST	Tornado Warning	OAX	Mills, Montgomery, Pottawattamie	30 min
Dec 15, 4:31 PM CST	Tornado Warning	FSD	Ida, Plymouth, Woodbury	29 min
Dec 15, 4:31 PM CST	Tornado Warning	OAX	Harrison, Monona, Shelby	13 min
Dec 15, 4:32 PM CST	Tornado Warning	FSD	Plymouth, Woodbury	28 min
Dec 15, 4:37 PM CST	Tornado Warning Tornado observed	DMX	Cass	23 min
Dec 15, 4:37 PM CST	Tornado Warning Tornado observed	OAX	Harrison, Shelby	23 min
Dec 15, 4:42 PM CST	Tornado Warning	FSD	Buena Vista, Cherokee, Clay, Ida, O'Brien, Plymouth and 1 more	33 min
Dec 15, 4:44 PM CST	Tornado Warning	DMX	Crawford	36 min
Dec 15, 4:46 PM CST	Tornado Warning	OAX	Pottawattamie, Shelby	20 min
Dec 15, 4:51 PM CST	Severe Thunderstorm Warning Considerable damage threat	FSD	O'Brien, Sioux	39 min
Dec 15, 4:51 PM CST	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 24 more	114 min
Dec 15, 4:53 PM CST	Tornado Warning	DMX	Adair, Audubon, Cass, Guthrie	33 min
Dec 15, 4:54 PM CST	Tornado Warning	OAX	Montgomery, Page	15 min
Dec 15, 4:55 PM CST	Tornado Warning	OAX	Shelby	14 min
Dec 15, 4:56 PM CST	Severe Thunderstorm Warning Destructive damage threat	FSD	Buena Vista, Cherokee, Clay, Ida	46 min
Dec 15, 5:07 PM CST	Tornado Warning	DMX	Sac	27 min
Dec 15, 5:08 PM CST	Tornado Warning	FSD	Buena Vista, Cherokee, Clay	37 min
Dec 15, 5:10 PM CST	Severe Thunderstorm Warning Destructive damage threat	DMX	Adair, Audubon, Boone, Dallas, Greene, Guthrie and 4 more	80 min
Dec 15, 5:10 PM CST	Tornado Warning	DMX	Carroll, Crawford	35 min
Dec 15, 5:14 PM CST	Tornado Warning	DMX	Audubon, Calhoun, Carroll, Greene, Guthrie	31 min
Dec 15, 5:15 PM CST	Tornado Warning	DMX	Calhoun, Carroll, Crawford, Sac	30 min
Dec 15, 5:15 PM CST	Tornado Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien	30 min
Dec 15, 5:16 PM CST	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 30 more	119 min
Dec 15, 5:18 PM CST	Tornado Warning Tornado observed	DMX	Adair, Boone, Dallas, Greene, Guthrie	42 min
Dec 15, 5:19 PM CST	Severe Thunderstorm Warning Destructive damage threat	DMX	Boone, Calhoun, Carroll, Emmet, Greene, Humboldt and 5 more	71 min
Dec 15, 5:22 PM CST	Severe Thunderstorm Warning Destructive damage threat	DMX	Carroll, Crawford, Sac	23 min
Dec 15, 5:22 PM CST	Severe Thunderstorm Warning Considerable damage threat	DMX	Adair, Adams, Clarke, Decatur, Madison, Ringgold and 3 more	68 min
Dec 15, 5:29 PM CST	Severe Thunderstorm Warning Considerable damage threat	FSD	Dickinson	46 min
Dec 15, 5:30 PM CST	Tornado Watch	SPC	Allamakee, Benton, Buchanan, Cedar, Chickasaw, Clayton and 23 more	6 hr
Dec 15, 5:36 PM CST	Tornado Warning	DMX	Calhoun, Humboldt, Kossuth, Palo Alto, Pocahontas	24 min
Dec 15, 5:38 PM CST	Tornado Warning Tornado observed	DMX	Boone, Calhoun, Greene, Hamilton, Webster	37 min
Dec 15, 5:45 PM CST	Tornado Warning	DMX	Calhoun, Pocahontas, Webster	30 min
Dec 15, 5:52 PM CST	Severe Thunderstorm Warning Destructive damage threat	DMX	Boone, Franklin, Hamilton, Hancock, Hardin, Humboldt and 6 more	53 min
Dec 15, 5:58 PM CST	Tornado Warning	DMX	Hancock, Humboldt, Kossuth, Palo Alto, Pocahontas	32 min
Dec 15, 6:13 PM CST	Severe Thunderstorm Warning	DMX	Appanoose, Clarke, Decatur, Lucas, Marion, Monroe and 2 more	62 min
Dec 15, 6:19 PM CST	Tornado Warning	DMX	Hancock, Kossuth, Winnebago	41 min
Dec 15, 6:24 PM CST	Severe Thunderstorm Warning Considerable damage threat	DMX	Clarke, Dallas, Jasper, Lucas, Madison, Mahaska and 5 more	66 min
Dec 15, 6:30 PM CST	Severe Thunderstorm Warning Considerable damage threat	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 6 more	75 min
Dec 15, 6:37 PM CST	Severe Thunderstorm Warning Considerable damage threat	ARX	Chickasaw, Floyd, Howard, Mitchell	68 min
Dec 15, 6:37 PM CST	Tornado Warning	DMX	Butler, Cerro Gordo, Franklin	20 min
Dec 15, 6:44 PM CST	Tornado Warning	ARX	Floyd	32 min
Dec 15, 6:47 PM CST	Severe Thunderstorm Warning Considerable damage threat	DMX	Grundy, Hardin, Marshall, Story	43 min
Dec 15, 7:09 PM CST	Severe Thunderstorm Warning Considerable damage threat	DMX	Appanoose, Davis, Jasper, Lucas, Mahaska, Marion and 5 more	66 min
Dec 15, 7:11 PM CST	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Chickasaw and 13 more	2 hr
Dec 15, 7:17 PM CST	Severe Thunderstorm Warning Destructive damage threat	DVN	Benton, Iowa	58 min
Dec 15, 7:25 PM CST	Tornado Warning	ARX	Howard	20 min
Dec 15, 7:29 PM CST	Severe Thunderstorm Warning Considerable damage threat	ARX	Allamakee, Clayton, Fayette, Winneshiek	61 min
Dec 15, 7:31 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Jefferson, Keokuk, Van Buren	59 min
Dec 15, 7:33 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Buchanan	57 min
Dec 15, 7:38 PM CST	Tornado Warning	ARX	Winneshiek	37 min
Dec 15, 7:44 PM CST	Severe Thunderstorm Warning Considerable damage threat	DMX	Black Hawk, Bremer, Butler, Grundy, Tama	27 min
Dec 15, 8:06 PM CST	Tornado Warning	DVN	Benton, Buchanan	20 min
Dec 15, 8:08 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Buchanan, Delaware, Johnson, Linn, Louisa, Washington	67 min
Dec 15, 8:16 PM CST	Severe Thunderstorm Warning Considerable damage threat	ARX	Allamakee, Clayton	74 min
Dec 15, 8:18 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Henry, Jefferson, Lee, Van Buren	57 min
Dec 15, 8:23 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Benton, Iowa	37 min
Dec 15, 8:29 PM CST	Severe Thunderstorm Warning Considerable damage threat	ARX	Allamakee, Clayton	31 min
Dec 15, 8:34 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Jefferson, Keokuk, Van Buren	26 min
Dec 15, 8:34 PM CST	Wind Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	5 hr
Dec 15, 8:44 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Delaware, Dubuque, Jones	61 min
Dec 15, 8:50 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Cedar, Louisa, Muscatine	55 min
Dec 15, 8:53 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Des Moines, Lee	67 min
Dec 15, 9:07 PM CST	Wind Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 4 more	9 hr
Dec 15, 9:12 PM CST	Severe Thunderstorm Warning Considerable damage threat	DVN	Clinton, Dubuque, Jackson, Scott	63 min
Dec 15, 11:52 PM CST	Wind Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	6 hr
Dec 24, 4:01 AM CST	Dense Fog Advisory	OAX	Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more	7 hr
Dec 24, 4:05 AM CST	Dense Fog Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 39 more	8 hr
Dec 24, 7:47 AM CST	Dense Fog Advisory	ARX	Chickasaw, Fayette, Floyd, Howard, Mitchell, Winneshiek	6 hr
Dec 25, 11:52 PM CST	Dense Fog Advisory	DVN	Des Moines, Lee	12 hr
Dec 26, 2:27 AM CST	Winter Weather Advisory	ARX	Allamakee, Howard, Winneshiek	34 hr
Dec 26, 4:14 AM CST	Winter Weather Advisory	FSD	Dickinson, Lyon, Osceola	24 hr
Dec 26, 1:52 PM CST	Wind Advisory	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	22 hr
Dec 26, 11:08 PM CST	Special Weather Statement	DVN	Iowa	22 min
Dec 26, 11:36 PM CST	Special Weather Statement	DVN	Cedar	24 min
Dec 27, 12:08 AM CST	Special Weather Statement	DVN	Cedar, Clinton, Jackson, Scott	22 min
Dec 27, 2:11 PM CST	Winter Weather Advisory	DMX	Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 12 more	28 hr
Dec 27, 2:38 PM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	33 hr
Dec 27, 2:57 PM CST	Winter Weather Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more	27 hr
Dec 28, 8:59 AM CST	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 34 more	5 hr
Dec 30, 7:17 PM CST	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	23 hr
Dec 30, 8:47 PM CST	Dense Fog Advisory	ARX	Chickasaw, Clayton, Fayette, Floyd, Howard, Mitchell and 1 more	14 hr
Dec 30, 9:07 PM CST	Dense Fog Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 43 more	21 hr
Dec 31, 3:30 AM CST	Dense Fog Advisory	OAX	Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more	9 hr
Dec 31, 7:41 AM CST	Dense Fog Advisory	FSD	Buena Vista, Ida	4 hr
Dec 31, 11:01 AM CST	Winter Weather Advisory	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more	10 hr
Dec 31, 11:11 AM CST	Winter Weather Advisory	DMX	Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 25 more	10 hr
Dec 31, 12:32 PM CST	Winter Weather Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	8 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	37
Tornado Warning	36
Tornado Watch	2
Mesoscale Discussion	8
Special Weather Statement	4
Winter
Winter Storm Warning	3
Winter Storm Watch	3
Winter Weather Advisory	18
Wind and dust
High Wind Warning	5
High Wind Watch	4
Wind Advisory	10
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	10

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 2020 2022

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.