Alert archive / Iowa / Calhoun County / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Calhoun County, Iowa, 2026

22 severe thunderstorm warnings in 2026. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.

Calhoun County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Severe Thunderstorm Warnings
22
Busiest month
April7 severe thunderstorm warnings
Busiest day
May 18, 20265 severe thunderstorm 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.

IssuedProductOfficeLasted
Apr 15, 11:54 AM CDTSevere Thunderstorm Warning Considerable damage threatDMX66 min
Apr 15, 12:49 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX56 min
Apr 15, 7:58 PM CDTSevere Thunderstorm WarningDMX47 min
Apr 23, 4:18 PM CDTSevere Thunderstorm WarningDMX57 min
Apr 23, 4:56 PM CDTSevere Thunderstorm WarningDMX49 min
Apr 23, 5:04 PM CDTSevere Thunderstorm WarningDMX41 min
Apr 23, 5:36 PM CDTSevere Thunderstorm WarningDMX69 min
May 15, 6:29 PM CDTSevere Thunderstorm WarningDMX46 min
May 15, 6:46 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX44 min
May 17, 8:19 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX56 min
May 17, 8:34 PM CDTSevere Thunderstorm WarningDMX56 min
May 17, 9:02 PM CDTSevere Thunderstorm Warning Considerable damage threatDMX43 min
May 17, 9:26 PM CDTSevere Thunderstorm WarningDMX79 min
May 17, 9:42 PM CDTSevere Thunderstorm WarningDMX63 min
Jun 17, 3:53 AM CDTSevere Thunderstorm WarningDMX52 min
Jun 17, 4:31 AM CDTSevere Thunderstorm WarningDMX44 min
Jul 2, 4:03 PM CDTSevere Thunderstorm WarningDMX43 min
Jul 2, 5:10 PM CDTSevere Thunderstorm WarningDMX50 min
Jul 8, 6:02 PM CDTSevere Thunderstorm WarningDMX43 min
Jul 8, 6:33 PM CDTSevere Thunderstorm WarningDMX42 min
Sep 6, 3:47 PM CDTSevere Thunderstorm WarningDMX43 min
Sep 6, 4:13 PM CDTSevere Thunderstorm WarningDMX47 min

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 18, 20265severe thunderstorm warnings
  2. April 23, 20264severe thunderstorm warnings
  3. April 15, 20262severe thunderstorm warnings
  4. May 15, 20262severe thunderstorm warnings
  5. June 17, 20262severe thunderstorm warnings
  6. July 2, 20262severe thunderstorm warnings
  7. July 8, 20262severe thunderstorm warnings
  8. September 6, 20262severe thunderstorm warnings
  9. April 16, 20261severe thunderstorm warnings

Nearby

Alerts in force nowTornadoes on recordForecastThe 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. Warning verification from the Mesonet's Cow. Rebuilt daily.