Alert archive / Iowa / Tornado Warnings

Tornado Warnings in Iowa, 2011

100 tornado warnings in 2011. 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 2011. Tap one for its archive.

Tornado Warnings
100
Busiest month
April30 tornado warnings
Busiest day
April 10, 201129 tornado 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.

IssuedProductOfficeCountiesLasted
Mar 22, 4:53 PM CDTTornado WarningOAXHarrison37 min
Mar 22, 4:55 PM CDTTornado WarningDMXCarroll, Crawford35 min
Mar 22, 5:02 PM CDTTornado WarningDMXAdair, Adams, Cass43 min
Mar 22, 5:03 PM CDTTornado WarningOAXHarrison, Pottawattamie27 min
Mar 22, 5:08 PM CDTTornado WarningOAXMontgomery22 min
Mar 22, 5:18 PM CDTTornado WarningDMXAudubon, Cass, Guthrie27 min
Mar 22, 5:19 PM CDTTornado WarningOAXShelby26 min
Mar 22, 5:29 PM CDTTornado WarningDMXCrawford35 min
Mar 22, 5:31 PM CDTTornado WarningOAXHarrison, Shelby29 min
Mar 22, 5:43 PM CDTTornado WarningDMXAudubon, Cass, Greene, Guthrie15 min
Mar 22, 5:44 PM CDTTornado WarningDMXAdair, Madison46 min
Mar 22, 5:47 PM CDTTornado WarningDMXAdams, Ringgold, Taylor, Union43 min
Mar 22, 6:26 PM CDTTornado WarningDMXDallas, Madison, Polk, Warren49 min
Mar 22, 6:27 PM CDTTornado WarningDMXAdair, Clarke, Madison, Union, Warren39 min
Mar 22, 6:45 PM CDTTornado WarningDMXClarke, Decatur, Ringgold30 min
Mar 22, 6:57 PM CDTTornado WarningDMXAdair, Madison, Union33 min
Mar 22, 7:09 PM CDTTornado WarningDMXClarke, Decatur, Lucas, Wayne36 min
Mar 22, 7:31 PM CDTTornado WarningDMXMadison, Warren29 min
Mar 22, 8:41 PM CDTTornado WarningDMXDecatur, Lucas, Wayne34 min
Mar 22, 9:15 PM CDTTornado WarningDMXMahaska, Poweshiek30 min
Apr 9, 6:39 PM CDTTornado WarningOAXMonona35 min
Apr 9, 7:08 PM CDTTornado WarningOAXMonona33 min
Apr 9, 7:09 PM CDTTornado WarningDMXCrawford51 min
Apr 9, 7:31 PM CDTTornado WarningFSDIda29 min
Apr 9, 7:56 PM CDTTornado WarningFSDIda34 min
Apr 9, 7:58 PM CDTTornado WarningDMXSac47 min
Apr 9, 8:23 PM CDTTornado WarningDMXSac22 min
Apr 9, 8:41 PM CDTTornado WarningDMXSac34 min
Apr 9, 9:09 PM CDTTornado WarningFSDBuena Vista36 min
Apr 9, 9:11 PM CDTTornado WarningDMXCalhoun, Pocahontas, Sac49 min
Apr 9, 9:31 PM CDTTornado WarningFSDPlymouth, Woodbury29 min
Apr 9, 9:46 PM CDTTornado WarningFSDBuena Vista29 min
Apr 9, 9:48 PM CDTTornado WarningFSDCherokee27 min
Apr 9, 9:55 PM CDTTornado WarningDMXPalo Alto, Pocahontas35 min
Apr 9, 10:02 PM CDTTornado WarningFSDBuena Vista28 min
Apr 9, 10:12 PM CDTTornado WarningDMXHancock, Kossuth33 min
Apr 9, 10:13 PM CDTTornado WarningFSDBuena Vista, Cherokee47 min
Apr 9, 10:18 PM CDTTornado WarningDMXCerro Gordo, Hancock, Winnebago, Worth42 min
Apr 9, 10:22 PM CDTTornado WarningDMXPocahontas38 min
Apr 9, 10:28 PM CDTTornado WarningDMXHumboldt, Kossuth, Palo Alto, Pocahontas47 min
Apr 9, 10:31 PM CDTTornado WarningFSDCherokee29 min
Apr 9, 10:50 PM CDTTornado WarningFSDBuena Vista, Cherokee40 min
Apr 9, 10:53 PM CDTTornado WarningARXChickasaw, Floyd, Howard, Mitchell37 min
Apr 9, 10:54 PM CDTTornado WarningDMXHumboldt, Kossuth, Palo Alto, Pocahontas51 min
Apr 9, 11:11 PM CDTTornado WarningDMXKossuth, Palo Alto12 min
Apr 9, 11:27 PM CDTTornado WarningFSDBuena Vista, Clay18 min
Apr 9, 11:29 PM CDTTornado WarningDMXHancock, Kossuth, Winnebago33 min
Apr 9, 11:36 PM CDTTornado WarningDMXEmmet, Palo Alto39 min
Apr 9, 11:39 PM CDTTornado WarningFSDClay21 min
Apr 9, 11:55 PM CDTTornado WarningDMXKossuth, Palo Alto35 min
May 11, 2:22 PM CDTTornado WarningDMXAdams23 min
May 11, 4:11 PM CDTTornado WarningDMXAdams, Taylor49 min
May 11, 4:50 PM CDTTornado WarningDMXAdams, Union40 min
May 11, 5:42 PM CDTTornado WarningDMXUnion33 min
May 11, 6:37 PM CDTTornado WarningFSDLyon, Sioux23 min
May 11, 6:58 PM CDTTornado WarningFSDDickinson, Lyon, O'Brien, Osceola32 min
May 12, 4:58 PM CDTTornado WarningOAXMonona32 min
May 12, 5:28 PM CDTTornado WarningOAXMonona32 min
May 22, 2:23 PM CDTTornado WarningDMXPoweshiek17 min
May 22, 2:38 PM CDTTornado WarningDVNBenton, Iowa, Johnson, Keokuk, Linn67 min
May 22, 2:42 PM CDTTornado WarningDMXBlack Hawk, Bremer33 min
May 22, 2:43 PM CDTTornado WarningARXHoward62 min
May 22, 2:45 PM CDTTornado WarningDVNBenton, Iowa, Linn29 min
May 22, 3:14 PM CDTTornado WarningDMXBremer31 min
May 22, 3:22 PM CDTTornado WarningARXFayette38 min
May 22, 3:22 PM CDTTornado WarningDVNCedar, Iowa, Johnson53 min
May 22, 8:24 PM CDTTornado WarningDVNScott51 min
May 24, 5:53 PM CDTTornado WarningDVNBuchanan, Delaware, Linn37 min
May 25, 4:35 PM CDTTornado WarningDVNDes Moines, Henry, Lee40 min
May 25, 5:11 PM CDTTornado WarningDVNDes Moines, Louisa23 min
Jun 8, 7:53 PM CDTTornado WarningDVNJones, Linn37 min
Jun 19, 9:40 PM CDTTornado WarningOAXFremont, Page35 min
Jun 19, 10:10 PM CDTTornado WarningDMXRinggold35 min
Jun 19, 10:12 PM CDTTornado WarningOAXFremont, Page48 min
Jun 19, 11:52 PM CDTTornado WarningDMXDecatur, Ringgold23 min
Jun 19, 11:57 PM CDTTornado WarningDMXDecatur22 min
Jun 20, 12:39 AM CDTTornado WarningDMXWayne16 min
Jun 20, 9:37 PM CDTTornado WarningFSDPlymouth23 min
Jun 20, 10:22 PM CDTTornado WarningFSDClay, Dickinson, O'Brien, Osceola23 min
Jun 20, 10:38 PM CDTTornado WarningFSDDickinson, Osceola37 min
Jun 20, 11:52 PM CDTTornado WarningDMXJasper, Marshall, Polk, Story23 min
Jun 21, 12:14 AM CDTTornado WarningDMXGrundy, Hardin31 min
Jun 21, 12:22 AM CDTTornado WarningDMXGrundy, Marshall23 min
Jun 21, 12:35 AM CDTTornado WarningDMXJasper, Marshall, Tama25 min
Jun 21, 12:39 AM CDTTornado WarningDMXGrundy, Marshall, Tama36 min
Jun 21, 12:41 AM CDTTornado WarningDMXButler34 min
Jun 21, 1:04 AM CDTTornado WarningDMXTama27 min
Jun 26, 7:54 PM CDTTornado WarningOAXHarrison, Monona23 min
Jun 26, 8:50 PM CDTTornado WarningDMXCarroll, Greene40 min
Jul 5, 5:52 PM CDTTornado WarningDMXBoone, Webster23 min
Jul 11, 3:53 AM CDTTornado WarningDMXMarshall, Story37 min
Jul 11, 4:32 AM CDTTornado WarningDMXMarshall, Tama28 min
Jul 23, 6:34 PM CDTTornado WarningDMXAppanoose, Lucas, Monroe, Wayne26 min
Jul 23, 6:47 PM CDTTornado WarningDMXAppanoose, Wayne17 min
Jul 27, 7:35 PM CDTTornado WarningDVNDubuque, Jackson40 min
Jul 27, 8:29 PM CDTTornado WarningDVNDubuque, Jackson46 min
Jul 27, 9:16 PM CDTTornado WarningDVNJackson31 min
Aug 6, 10:30 PM CDTTornado WarningDMXAdair, Madison28 min
Aug 6, 11:36 PM CDTTornado WarningDMXLucas, Marion, Monroe24 min
Sep 2, 3:09 AM CDTTornado WarningFSDCherokee, Plymouth24 min

By county

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

45 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. April 10, 201129tornado warnings
  2. March 22, 201116tornado warnings
  3. June 21, 201110tornado warnings
  4. May 22, 20118tornado warnings
  5. May 11, 20116tornado warnings
  6. June 20, 20116tornado warnings
  7. March 23, 20114tornado warnings
  8. July 28, 20113tornado warnings
  9. May 12, 20112tornado warnings
  10. May 25, 20112tornado warnings
  11. June 27, 20112tornado warnings
  12. July 11, 20112tornado warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20102012

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.