Alert archive

Weather alerts in Utah

17,588 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count since 1986. Tap one for its archive.

Alerts
17,588
Warnings
7,154
Watches
1,604
Advisories
3,176
Busiest year
20221,343 alerts
Average year
429over 41 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

By county

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

The latest warnings

The most recent on file, newest first.

IssuedProductOfficeCountiesLasted
Sep 22, 4:11 PM MDTSevere Thunderstorm WarningSLCSalt Lake, Utah16 min
Sep 22, 4:05 PM MDTSevere Thunderstorm WarningSLCSalt Lake, Utah25 min
Sep 22, 3:25 PM MDTSevere Thunderstorm Warning Considerable damage threatSLCBox Elder, Tooele23 min
Sep 22, 2:17 PM MDTSevere Thunderstorm WarningSLCTooele28 min
Sep 18, 5:15 PM MDTSevere Thunderstorm WarningGJTUintah30 min
Sep 18, 4:52 PM MDTFlash Flood Warning Considerable damage threatGJTUintah5 hr
Sep 18, 4:41 PM MDTSevere Thunderstorm WarningGJTUintah34 min
Sep 18, 3:58 PM MDTSevere Thunderstorm WarningGJTUintah47 min
Sep 18, 3:24 PM MDTSevere Thunderstorm WarningGJTUintah36 min
Sep 18, 3:04 PM MDTSevere Thunderstorm WarningSLCCarbon26 min
Sep 18, 2:58 PM MDTSevere Thunderstorm WarningGJTGrand32 min
Sep 18, 2:31 PM MDTSevere Thunderstorm WarningSLCCache, Morgan, Rich, Weber29 min

Nearby

Alerts in force nowTornadoes on recordThe radar archive

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.