Dense Fog Advisories in Oregon
984 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
- 984
- Busiest year
- 202494 dense fog advisories
- Average year
- 45over 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.
- Malheur County183
- Coos County148
- Curry County148
- Douglas County148
- Jackson County148
- Josephine County139
- Umatilla County118
- Morrow County82
- Gilliam County65
- Lane County64
- Wasco County61
- Sherman County60
- Benton County45
- Linn County39
- Wheeler County36
- Clackamas County36
- Yamhill County35
- Polk County34
- Marion County31
- Washington County31
- Baker County30
- Multnomah County29
- Lincoln County28
- Jefferson County27
- Columbia County27
- Deschutes County26
- Crook County25
- Harney County23
- Tillamook County23
- Clatsop County22
- Union County19
- Klamath County18
- Wallowa County15
- Lake County6
- Grant County5
The latest dense fog advisories
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 2, 7:11 AM PST | Dense Fog Advisory | PQR | Benton, Lane, Linn | 3 hr |
| Feb 27, 3:35 AM PST | Dense Fog Advisory | PQR | Benton, Clackamas, Lane, Linn, Marion, Multnomah and 3 more | 8 hr |
| Feb 25, 5:32 AM PST | Dense Fog Advisory | PQR | Clackamas, Clatsop, Columbia, Lincoln, Marion, Multnomah and 4 more | 6 hr |
| Feb 15, 1:25 PM PST | Dense Fog Advisory | PDT | Crook, Deschutes, Gilliam, Jefferson, Morrow, Sherman and 3 more | 23 hr |
| Feb 15, 7:32 AM PST | Dense Fog Advisory | MFR | Jackson | 3 hr |
| Feb 14, 9:04 PM PST | Dense Fog Advisory | PDT | Crook, Deschutes, Jefferson, Umatilla | 16 hr |
| Feb 10, 1:05 AM PST | Dense Fog Advisory | PQR | Benton, Clackamas, Columbia, Lane, Linn, Marion and 4 more | 7 hr |
| Feb 7, 6:06 AM PST | Dense Fog Advisory | PDT | Umatilla | 6 hr |
| Feb 5, 9:36 PM PST | Dense Fog Advisory | PDT | Umatilla | 10 hr |
| Feb 5, 5:26 PM PST | Dense Fog Advisory | PDT | Crook, Deschutes, Jefferson, Sherman, Wasco | 94 min |
| Feb 5, 11:04 AM PST | Dense Fog Advisory | PQR | Columbia, Lane | 95 min |
| Feb 5, 7:24 AM PST | Dense Fog Advisory | PQR | Benton, Columbia, Lane, Linn | 4 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.