Dense Fog Advisories in Idaho
472 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
- 472
- Busiest year
- 200943 dense fog advisories
- Average year
- 21over 22 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.
- Owyhee County210
- Washington County206
- Gem County204
- Canyon County196
- Payette County196
- Elmore County159
- Ada County157
- Kootenai County100
- Adams County95
- Gooding County60
- Jerome County60
- Twin Falls County60
- Bonner County52
- Boundary County52
- Benewah County39
- Latah County39
- Clearwater County24
- Idaho County23
- Valley County22
- Bonneville County18
- Power County18
- Bingham County17
- Fremont County15
- Nez Perce County14
- Bannock County14
- Madison County14
- Camas County13
- Jefferson County13
- Shoshone County12
- Cassia County12
- Butte County11
- Blaine County11
- Minidoka County11
- Oneida County9
- Lincoln County9
- Bear Lake County8
- Teton County8
- Boise County7
- Franklin County7
- Caribou County6
4 more counties
The latest dense fog advisories
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 3, 4:42 AM MST | Dense Fog Advisory | PIH | Bonneville, Clark, Fremont, Jefferson, Madison, Teton | 6 hr |
| Feb 12, 1:23 AM MST | Dense Fog Advisory | PIH | Bannock, Bingham, Bonneville, Butte, Fremont, Jefferson and 2 more | 11 hr |
| Feb 5, 6:57 PM MST | Dense Fog Advisory | OTX | Benewah, Latah | 15 hr |
| Feb 5, 6:32 AM MST | Dense Fog Advisory | OTX | Bonner, Boundary, Kootenai, Nez Perce | 6 hr |
| Jan 18, 6:16 PM MST | Dense Fog Advisory | PIH | Bannock, Bingham, Blaine, Cassia, Lincoln, Minidoka and 1 more | 16 hr |
| Jan 18, 4:14 PM MST | Dense Fog Advisory | BOI | Gooding, Jerome, Twin Falls | 19 hr |
| Jan 18, 2:26 AM MST | Dense Fog Advisory | PIH | Blaine, Cassia, Minidoka, Power | 11 hr |
| Jan 18, 12:07 AM MST | Dense Fog Advisory | BOI | Gooding, Jerome, Twin Falls | 13 hr |
| Jan 15, 5:51 PM MST | Dense Fog Advisory | PIH | Blaine, Cassia, Lincoln, Minidoka, Power | 16 hr |
| Jan 15, 2:14 PM MST | Dense Fog Advisory | BOI | Ada, Adams, Canyon, Elmore, Gem, Gooding and 5 more | 21 hr |
| Jan 14, 4:07 PM MST | Dense Fog Advisory | OTX | Benewah, Bonner, Boundary, Kootenai, Latah, Nez Perce | 43 hr |
| Jan 14, 2:01 PM MST | Dense Fog Advisory | BOI | Ada, Canyon, Elmore, Gem, Owyhee, Payette and 1 more | 23 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.