Alert archive / Iowa / Tornado Watches / 2021
Tornado Watches in Iowa, December 2021
2 tornado watches in December 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 tornado watches reaches back to 1997.
Tornado Watches by county
Each county as a circle sized by its count in December 2021. Tap one for its archive.
- Tornado Watches
- 2
- Busiest day
- December 15, 20212 tornado watches
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 15, 1:23 PM CST | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 64 more | 7 hr |
| Dec 15, 5:30 PM CST | Tornado Watch | SPC | Allamakee, Benton, Buchanan, Cedar, Chickasaw, Clayton and 23 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adair County1
- Adams County1
- Appanoose County1
- Audubon County1
- Black Hawk County1
- Boone County1
- Bremer County1
- Buena Vista County1
- Butler County1
- Calhoun County1
- Carroll County1
- Cass County1
- Cerro Gordo County1
- Cherokee County1
- Clarke County1
- Clay County1
- Crawford County1
- Dallas County1
- Davis County1
- Decatur County1
- Dickinson County1
- Emmet County1
- Franklin County1
- Fremont County1
- Greene County1
- Grundy County1
- Guthrie County1
- Hamilton County1
- Hancock County1
- Hardin County1
- Harrison County1
- Humboldt County1
- Ida County1
- Jasper County1
- Kossuth County1
- Lucas County1
- Lyon County1
- Madison County1
- Mahaska County1
- Marion County1
59 more counties
- Marshall County1
- Mills County1
- Monona County1
- Monroe County1
- Montgomery County1
- O'Brien County1
- Osceola County1
- Page County1
- Palo Alto County1
- Plymouth County1
- Pocahontas County1
- Polk County1
- Pottawattamie County1
- Poweshiek County1
- Ringgold County1
- Sac County1
- Shelby County1
- Sioux County1
- Story County1
- Tama County1
- Taylor County1
- Union County1
- Wapello County1
- Warren County1
- Wayne County1
- Webster County1
- Winnebago County1
- Woodbury County1
- Worth County1
- Wright County1
- Allamakee County1
- Benton County1
- Buchanan County1
- Cedar County1
- Chickasaw County1
- Clayton County1
- Clinton County1
- Delaware County1
- Des Moines County1
- Dubuque County1
- Fayette County1
- Floyd County1
- Henry County1
- Howard County1
- Iowa County1
- Jackson County1
- Jefferson County1
- Johnson County1
- Jones County1
- Keokuk County1
- Lee County1
- Linn County1
- Louisa County1
- Mitchell County1
- Muscatine County1
- Scott County1
- Van Buren County1
- Washington County1
- Winneshiek County1
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.