Extreme Heat Warnings in Utah
10 extreme heat warnings since 1986. 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 extreme heat warnings reaches back to 2005.
Extreme Heat Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Extreme Heat Warnings
- 10
- Busiest year
- 20267 extreme heat warnings
- Average year
- 5over 2 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 county
Every county with at least one alert. A county page lists each alert that covered it.
- Kane County8
- San Juan County8
- Garfield County6
- Iron County6
- Washington County6
- Emery County4
- Sevier County4
- Wayne County4
- Davis County3
- Salt Lake County3
- Tooele County3
- Utah County3
- Weber County3
- Box Elder County2
- Carbon County2
- Grand County2
- Juab County2
- Millard County2
- Beaver County1
- Cache County1
- Duchesne County1
- Morgan County1
- Sanpete County1
- Summit County1
- Uintah County1
- Wasatch County1
The latest extreme heat warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 9:46 AM MDT | Extreme Heat Warning | SLC | Box Elder, Carbon, Davis, Emery, Garfield, Iron and 11 more | 4 days |
| Aug 2, 8:42 PM MDT | Extreme Heat Warning | SLC | Emery, Garfield, Iron, Kane, San Juan, Sevier and 2 more | 24 hr |
| Jul 30, 11:53 AM MDT | Extreme Heat Warning | GJT | Grand, San Juan | 4 days |
| Jul 29, 11:53 AM MDT | Extreme Heat Warning | SLC | Davis, Emery, Garfield, Iron, Kane, Salt Lake and 7 more | 4 days |
| Jul 25, 9:31 AM MDT | Extreme Heat Warning | SLC | Garfield, Kane, San Juan | 62 hr |
| Jul 9, 12:30 PM MDT | Extreme Heat Warning | GJT | Grand, San Juan, Uintah | 4 days |
| Jul 9, 10:55 AM MDT | Extreme Heat Warning | SLC | Beaver, Box Elder, Cache, Carbon, Davis, Duchesne and 18 more | 5 days |
Nearby
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.