Alert archive / Utah / Grand County / Flash Flood Warnings

Flash Flood Warnings in Grand County, Utah, 2026

14 flash flood warnings in 2026. An alert counts here when it covered this county. The archive of flash flood warnings reaches back to 1986.

Grand County and its neighbors

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

Flash Flood Warnings
14
Busiest month
July10 flash flood warnings
Busiest day
July 29, 20263 flash flood warnings

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jul 16, 5:50 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Jul 16, 6:37 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Jul 19, 8:23 PM MDTFlash Flood WarningGJT101 min
Jul 20, 9:08 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Jul 21, 6:26 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Jul 22, 2:28 PM MDTFlash Flood Warning Considerable damage threatGJT6 hr
Jul 28, 10:27 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Jul 29, 5:19 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Jul 29, 5:44 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Jul 29, 6:11 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr
Aug 30, 5:19 PM MDTFlash Flood WarningGJT86 min
Sep 15, 5:31 PM MDTFlash Flood WarningGJT4 hr
Sep 15, 5:51 PM MDTFlash Flood WarningGJT3 hr
Sep 16, 2:54 PM MDTFlash Flood Warning Considerable damage threatGJT3 hr

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 29, 20263flash flood warnings
  2. July 22, 20262flash flood warnings
  3. September 15, 20262flash flood warnings
  4. July 16, 20261flash flood warnings
  5. July 17, 20261flash flood warnings
  6. July 20, 20261flash flood warnings
  7. July 21, 20261flash flood warnings
  8. July 30, 20261flash flood warnings
  9. August 30, 20261flash flood warnings
  10. September 16, 20261flash flood 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.