Alert archive / Iowa / Tornado Warnings / 2021

Tornado Warnings in Iowa, December 2021

36 tornado warnings 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 warnings reaches back to 1986.

Tornado Warnings by county

Each county as a circle sized by its count in December 2021. Tap one for its archive.

Tornado Warnings
36
Busiest day
December 15, 202129 tornado warnings

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.

IssuedProductOfficeCountiesLasted
Dec 10, 6:26 PM CSTTornado WarningDVNDes Moines, Henry, Louisa20 min
Dec 15, 4:00 PM CSTTornado WarningFSDWoodbury45 min
Dec 15, 4:01 PM CSTTornado WarningOAXFremont, Mills14 min
Dec 15, 4:12 PM CSTTornado WarningOAXFremont, Mills33 min
Dec 15, 4:16 PM CSTTornado WarningOAXHarrison, Pottawattamie17 min
Dec 15, 4:17 PM CSTTornado WarningFSDPlymouth, Woodbury28 min
Dec 15, 4:21 PM CSTTornado WarningOAXPottawattamie24 min
Dec 15, 4:30 PM CSTTornado WarningOAXMills, Montgomery, Pottawattamie30 min
Dec 15, 4:31 PM CSTTornado WarningFSDIda, Plymouth, Woodbury29 min
Dec 15, 4:31 PM CSTTornado WarningOAXHarrison, Monona, Shelby13 min
Dec 15, 4:32 PM CSTTornado WarningFSDPlymouth, Woodbury28 min
Dec 15, 4:37 PM CSTTornado Warning Tornado observedDMXCass23 min
Dec 15, 4:37 PM CSTTornado Warning Tornado observedOAXHarrison, Shelby23 min
Dec 15, 4:42 PM CSTTornado WarningFSDBuena Vista, Cherokee, Clay, Ida, O'Brien, Plymouth and 1 more33 min
Dec 15, 4:44 PM CSTTornado WarningDMXCrawford36 min
Dec 15, 4:46 PM CSTTornado WarningOAXPottawattamie, Shelby20 min
Dec 15, 4:53 PM CSTTornado WarningDMXAdair, Audubon, Cass, Guthrie33 min
Dec 15, 4:54 PM CSTTornado WarningOAXMontgomery, Page15 min
Dec 15, 4:55 PM CSTTornado WarningOAXShelby14 min
Dec 15, 5:07 PM CSTTornado WarningDMXSac27 min
Dec 15, 5:08 PM CSTTornado WarningFSDBuena Vista, Cherokee, Clay37 min
Dec 15, 5:10 PM CSTTornado WarningDMXCarroll, Crawford35 min
Dec 15, 5:14 PM CSTTornado WarningDMXAudubon, Calhoun, Carroll, Greene, Guthrie31 min
Dec 15, 5:15 PM CSTTornado WarningDMXCalhoun, Carroll, Crawford, Sac30 min
Dec 15, 5:15 PM CSTTornado WarningFSDBuena Vista, Cherokee, Clay, O'Brien30 min
Dec 15, 5:18 PM CSTTornado Warning Tornado observedDMXAdair, Boone, Dallas, Greene, Guthrie42 min
Dec 15, 5:36 PM CSTTornado WarningDMXCalhoun, Humboldt, Kossuth, Palo Alto, Pocahontas24 min
Dec 15, 5:38 PM CSTTornado Warning Tornado observedDMXBoone, Calhoun, Greene, Hamilton, Webster37 min
Dec 15, 5:45 PM CSTTornado WarningDMXCalhoun, Pocahontas, Webster30 min
Dec 15, 5:58 PM CSTTornado WarningDMXHancock, Humboldt, Kossuth, Palo Alto, Pocahontas32 min
Dec 15, 6:19 PM CSTTornado WarningDMXHancock, Kossuth, Winnebago41 min
Dec 15, 6:37 PM CSTTornado WarningDMXButler, Cerro Gordo, Franklin20 min
Dec 15, 6:44 PM CSTTornado WarningARXFloyd32 min
Dec 15, 7:25 PM CSTTornado WarningARXHoward20 min
Dec 15, 7:38 PM CSTTornado WarningARXWinneshiek37 min
Dec 15, 8:06 PM CSTTornado WarningDVNBenton, Buchanan20 min

By county

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

5 more counties

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.