Alert archive / Washington / Dense Fog Advisories
Dense Fog Advisories in Washington, 2020
31 dense fog advisories in 2020. 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 in 2020. Tap one for its archive.
- Dense Fog Advisories
- 31
- Busiest month
- November9 dense fog advisories
- Busiest day
- September 15, 20202 dense fog advisories
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 7:26 AM PST | Dense Fog Advisory | PQR | 3 hr | |
| Feb 28, 9:33 AM PST | Dense Fog Advisory | SEW | 87 min | |
| Sep 12, 5:36 AM PDT | Dense Fog Advisory | PQR | 5 hr | |
| Sep 12, 10:26 PM PDT | Dense Fog Advisory | PQR | 16 hr | |
| Sep 13, 8:08 PM PDT | Dense Fog Advisory | PQR | 16 hr | |
| Sep 14, 5:56 PM PDT | Dense Fog Advisory | PQR | 18 hr | |
| Sep 15, 3:38 PM PDT | Dense Fog Advisory | PQR | 11 hr | |
| Sep 17, 7:15 AM PDT | Dense Fog Advisory | PQR | 4 hr | |
| Oct 1, 7:36 AM PDT | Dense Fog Advisory | PQR | 2 hr | |
| Oct 2, 7:45 AM PDT | Dense Fog Advisory | PQR | 3 hr | |
| Oct 2, 8:45 AM PDT | Dense Fog Advisory | SEW | 3 hr | |
| Oct 3, 4:17 AM PDT | Dense Fog Advisory | SEW | San Juan | 7 hr |
| Oct 3, 5:50 AM PDT | Dense Fog Advisory | PQR | 5 hr | |
| Oct 28, 11:28 PM PDT | Dense Fog Advisory | PQR | 4 hr | |
| Nov 3, 4:43 AM PST | Dense Fog Advisory | OTX | Lincoln, Pend Oreille, Spokane, Stevens | 4 hr |
| Nov 11, 2:43 AM PST | Dense Fog Advisory | OTX | Adams, Douglas, Grant, Lincoln, Okanogan, Pend Oreille and 2 more | 6 hr |
| Nov 20, 5:40 PM PST | Dense Fog Advisory | PQR | 17 hr | |
| Nov 21, 5:24 PM PST | Dense Fog Advisory | PQR | 11 hr | |
| Nov 24, 6:23 AM PST | Dense Fog Advisory | PDT | Benton, Franklin, Klickitat, Walla Walla | 5 hr |
| Nov 27, 1:38 AM PST | Dense Fog Advisory | PQR | 9 hr | |
| Nov 27, 5:25 AM PST | Dense Fog Advisory | OTX | Chelan, Douglas | 4 hr |
| Nov 29, 3:21 AM PST | Dense Fog Advisory | SEW | 7 hr | |
| Nov 29, 6:39 AM PST | Dense Fog Advisory | PQR | 4 hr | |
| Dec 1, 3:40 AM PST | Dense Fog Advisory | PQR | 8 hr | |
| Dec 1, 5:24 AM PST | Dense Fog Advisory | SEW | 5 hr | |
| Dec 4, 5:03 AM PST | Dense Fog Advisory | OTX | Adams, Grant | 6 hr |
| Dec 4, 7:15 PM PST | Dense Fog Advisory | OTX | Adams, Asotin, Douglas, Garfield, Grant, Lincoln and 3 more | 16 hr |
| Dec 8, 7:08 PM PST | Dense Fog Advisory | PDT | Columbia, Walla Walla | 9 hr |
| Dec 9, 10:18 AM PST | Dense Fog Advisory | OTX | Adams, Douglas, Grant, Lincoln, Okanogan | 3 hr |
| Dec 9, 7:46 PM PST | Dense Fog Advisory | PQR | 10 hr | |
| Dec 10, 9:57 PM PST | Dense Fog Advisory | OTX | Spokane, Whitman | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.