Alert archive / Iowa / Tornado Warnings / 2026

Tornado Warnings in Iowa, May 2026

40 tornado warnings in May 2026. 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 May 2026. Tap one for its archive.

Tornado Warnings
40
Busiest day
May 18, 202628 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
May 15, 8:35 PM CDTTornado WarningARXFloyd11 min
May 15, 8:53 PM CDTTornado WarningDMXCerro Gordo18 min
May 16, 5:52 PM CDTTornado WarningDMXTaylor13 min
May 16, 6:12 PM CDTTornado WarningDMXRinggold, Taylor48 min
May 17, 4:27 PM CDTTornado WarningFSDLyon48 min
May 17, 7:26 PM CDTTornado WarningFSDWoodbury49 min
May 17, 7:47 PM CDTTornado WarningFSDCherokee, Plymouth, Woodbury43 min
May 17, 8:04 PM CDTTornado WarningOAXHarrison, Pottawattamie26 min
May 17, 8:14 PM CDTTornado WarningOAXPottawattamie29 min
May 17, 8:26 PM CDTTornado WarningFSDBuena Vista, Cherokee, Clay, O'Brien28 min
May 17, 8:28 PM CDTTornado WarningOAXHarrison, Pottawattamie25 min
May 17, 8:35 PM CDTTornado WarningDMXCalhoun, Pocahontas, Sac40 min
May 17, 8:46 PM CDTTornado WarningOAXMills29 min
May 17, 8:48 PM CDTTornado WarningFSDClay, Dickinson27 min
May 17, 8:54 PM CDTTornado WarningFSDClay, Dickinson51 min
May 17, 8:59 PM CDTTornado WarningDMXEmmet, Palo Alto46 min
May 17, 9:05 PM CDTTornado Warning Tornado observedDMXCalhoun, Hamilton, Humboldt, Pocahontas, Webster, Wright40 min
May 17, 9:06 PM CDTTornado WarningOAXMills, Montgomery, Pottawattamie39 min
May 17, 9:08 PM CDTTornado WarningDMXHumboldt, Kossuth, Palo Alto, Pocahontas52 min
May 17, 9:12 PM CDTTornado WarningDMXCalhoun, Hamilton, Webster48 min
May 17, 9:15 PM CDTTornado WarningDMXEmmet30 min
May 17, 9:30 PM CDTTornado Warning Tornado observedDMXEmmet, Kossuth, Palo Alto, Winnebago45 min
May 17, 9:35 PM CDTTornado WarningDMXCerro Gordo, Hancock, Kossuth, Winnebago, Worth40 min
May 17, 9:45 PM CDTTornado WarningDMXFranklin, Hamilton, Hardin, Humboldt, Webster, Wright45 min
May 17, 9:56 PM CDTTornado WarningDMXHamilton, Hardin, Webster38 min
May 17, 10:07 PM CDTTornado Warning Tornado observedDMXCerro Gordo, Hancock, Winnebago, Worth38 min
May 17, 10:13 PM CDTTornado WarningARXMitchell62 min
May 17, 10:19 PM CDTTornado WarningDMXCerro Gordo26 min
May 17, 10:24 PM CDTTornado WarningARXFloyd, Mitchell51 min
May 17, 10:54 PM CDTTornado WarningARXChickasaw, Howard51 min
May 18, 5:06 PM CDTTornado WarningOAXFremont, Page54 min
May 18, 5:40 PM CDTTornado WarningDMXTaylor65 min
May 18, 6:31 PM CDTTornado WarningDMXRinggold, Taylor59 min
May 18, 7:06 PM CDTTornado Warning Tornado observedDMXClarke, Decatur, Ringgold, Union39 min
May 18, 7:16 PM CDTTornado WarningDMXRinggold, Taylor44 min
May 18, 7:39 PM CDTTornado WarningDMXJasper, Marion, Polk, Warren41 min
May 18, 8:18 PM CDTTornado WarningDMXJasper, Marshall16 min
May 18, 9:06 PM CDTTornado WarningDMXPoweshiek, Tama16 min
May 22, 5:47 PM CDTTornado Warning Tornado observedOAXMills43 min
May 22, 6:07 PM CDTTornado WarningFSDWoodbury38 min

By county

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

6 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive2025

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.