Dense Fog Advisories in Utah
198 dense fog advisories 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 dense fog advisories reaches back to 2005.
Dense Fog Advisories by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Dense Fog Advisories
- 198
- Busiest year
- 201020 dense fog advisories
- Average year
- 10over 19 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.
- Uintah County86
- Grand County45
- San Juan County27
- Cache County14
- Box Elder County12
- Salt Lake County10
- Davis County9
- Weber County9
- Tooele County8
- Utah County5
- Duchesne County4
- Rich County3
- Juab County2
- Millard County2
- Morgan County2
- Summit County2
- Wasatch County2
- Daggett County1
- Garfield County1
- Kane County1
- Washington County1
- Sanpete County1
The latest dense fog advisories
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 3, 7:21 PM MST | Dense Fog Advisory | GJT | Grand, Uintah | 16 hr |
| Jan 3, 3:07 AM MST | Dense Fog Advisory | SLC | Cache | 6 hr |
| Jan 3, 2:02 AM MST | Dense Fog Advisory | GJT | Grand | 9 hr |
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. Warning verification from the Mesonet's Cow. Rebuilt daily.