Alert archive / Iowa / Winter Storm Warnings
Winter Storm Warnings in Iowa, 2021
20 winter storm warnings in 2021. 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 winter storm warnings reaches back to 2005.
Winter Storm Warnings by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Winter Storm Warnings
- 20
- Busiest month
- January8 winter storm warnings
- Busiest day
- January 24, 20213 winter storm 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 |
|---|---|---|---|---|
| Jan 1, 4:02 AM CST | Winter Storm Warning | DVN | Des Moines, Henry, Lee, Louisa, Van Buren | 20 hr |
| Jan 14, 4:04 AM CST | Winter Storm Warning | DMX | Cerro Gordo, Franklin, Hardin, Polk, Story, Warren and 1 more | 5 hr |
| Jan 24, 3:15 AM CST | Winter Storm Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 49 hr |
| Jan 24, 3:17 AM CST | Winter Storm Warning | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 32 more | 57 hr |
| Jan 24, 2:43 PM CST | Winter Storm Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 45 hr |
| Jan 29, 2:29 PM CST | Winter Storm Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more | 46 hr |
| Jan 29, 2:54 PM CST | Winter Storm Warning | ARX | Clayton, Fayette | 45 hr |
| Jan 29, 2:56 PM CST | Winter Storm Warning | DMX | Black Hawk, Bremer, Butler, Grundy, Hardin, Marshall and 1 more | 35 hr |
| Feb 3, 2:56 PM CST | Winter Storm Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more | 36 hr |
| Feb 4, 3:53 AM CST | Winter Storm Warning | ARX | Chickasaw, Clayton, Fayette, Floyd, Howard, Mitchell | 20 hr |
| Feb 21, 8:42 AM CST | Winter Storm Warning | OAX | Harrison, Mills, Monona, Pottawattamie, Shelby | 7 hr |
| Feb 21, 9:16 AM CST | Winter Storm Warning | DMX | Adair, Audubon, Boone, Calhoun, Carroll, Cass and 5 more | 9 hr |
| Feb 21, 11:24 AM CST | Winter Storm Warning | FSD | Ida, Woodbury | 4 hr |
| Mar 14, 4:02 AM CDT | Winter Storm Warning | DMX | Black Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Emmet and 14 more | 36 hr |
| Mar 14, 4:03 AM CDT | Winter Storm Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 2 more | 32 hr |
| Mar 14, 4:06 AM CDT | Winter Storm Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 39 hr |
| Mar 15, 3:32 AM CDT | Winter Storm Warning | DVN | Benton, Buchanan, Clinton, Delaware, Dubuque, Jackson and 2 more | 15 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, 11:41 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 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Hardin County4
- Benton County4
- Buchanan County4
- Clinton County4
- Delaware County4
- Dubuque County4
- Jackson County4
- Jones County4
- Linn County4
- Des Moines County3
- Henry County3
- Louisa County3
- Cerro Gordo County3
- Worth County3
- Black Hawk County3
- Calhoun County3
- Grundy County3
- Sac County3
- Cedar County3
- Iowa County3
- Johnson County3
- Muscatine County3
- Scott County3
- Clayton County3
- Fayette County3
- Howard County3
- Mitchell County3
- Lee County2
- Van Buren County2
- Franklin County2
- Polk County2
- Story County2
- Warren County2
- Harrison County2
- Mills County2
- Monona County2
- Pottawattamie County2
- Shelby County2
- Adair County2
- Audubon County2
59 more counties
- Boone County2
- Carroll County2
- Cass County2
- Crawford County2
- Dallas County2
- Greene County2
- Guthrie County2
- Hamilton County2
- Marshall County2
- Tama County2
- Webster County2
- Jefferson County2
- Keokuk County2
- Washington County2
- Bremer County2
- Butler County2
- Chickasaw County2
- Floyd County2
- Emmet County2
- Hancock County2
- Kossuth County2
- Palo Alto County2
- Pocahontas County2
- Winnebago County2
- Buena Vista County2
- Cherokee County2
- Clay County2
- Dickinson County2
- Lyon County2
- O'Brien County2
- Osceola County2
- Sioux County2
- Fremont County1
- Montgomery County1
- Page County1
- Adams County1
- Appanoose County1
- Clarke County1
- Davis County1
- Decatur County1
- Jasper County1
- Lucas County1
- Madison County1
- Mahaska County1
- Marion County1
- Monroe County1
- Poweshiek County1
- Ringgold County1
- Taylor County1
- Union County1
- Wapello County1
- Wayne County1
- Ida County1
- Woodbury County1
- Humboldt County1
- Wright County1
- Allamakee County1
- Winneshiek County1
- Plymouth County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.