Alert archive / Iowa / Sioux County / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Sioux County, Iowa, 2021

20 severe thunderstorm warnings in 2021. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.

Sioux County and its neighbors

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

Severe Thunderstorm Warnings
20
Busiest month
August11 severe thunderstorm warnings
Busiest day
July 9, 20214 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
Jul 8, 11:50 PM CDTSevere Thunderstorm WarningFSD40 min
Jul 9, 12:44 AM CDTSevere Thunderstorm WarningFSD46 min
Jul 9, 12:46 AM CDTSevere Thunderstorm WarningFSD44 min
Jul 9, 2:15 AM CDTSevere Thunderstorm WarningFSD45 min
Aug 5, 9:31 PM CDTSevere Thunderstorm WarningFSD44 min
Aug 6, 1:06 AM CDTSevere Thunderstorm WarningFSD39 min
Aug 6, 1:36 AM CDTSevere Thunderstorm WarningFSD24 min
Aug 27, 12:17 AM CDTSevere Thunderstorm WarningFSD28 min
Aug 27, 12:34 AM CDTSevere Thunderstorm Warning Considerable damage threatFSD41 min
Aug 27, 1:09 AM CDTSevere Thunderstorm Warning Considerable damage threatFSD51 min
Aug 28, 4:23 PM CDTSevere Thunderstorm Warning Considerable damage threatFSD37 min
Aug 28, 5:00 PM CDTSevere Thunderstorm Warning Considerable damage threatFSD45 min
Aug 28, 8:52 PM CDTSevere Thunderstorm WarningFSD23 min
Aug 28, 9:13 PM CDTSevere Thunderstorm WarningFSD47 min
Aug 30, 7:29 PM CDTSevere Thunderstorm WarningFSD46 min
Sep 17, 12:29 AM CDTSevere Thunderstorm WarningFSD46 min
Sep 17, 12:36 AM CDTSevere Thunderstorm Warning Considerable damage threatFSD54 min
Sep 17, 1:11 AM CDTSevere Thunderstorm WarningFSD49 min
Sep 17, 1:23 AM CDTSevere Thunderstorm WarningFSD67 min
Dec 15, 4:51 PM CSTSevere Thunderstorm Warning Considerable damage threatFSD39 min

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 9, 20214severe thunderstorm warnings
  2. September 17, 20214severe thunderstorm warnings
  3. August 6, 20213severe thunderstorm warnings
  4. August 27, 20213severe thunderstorm warnings
  5. August 28, 20212severe thunderstorm warnings
  6. August 29, 20212severe thunderstorm warnings
  7. August 31, 20211severe thunderstorm warnings
  8. December 15, 20211severe thunderstorm warnings

Nearby

Alerts in force nowTornadoes on recordForecastThe 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.