Alert archive / Oregon / Dense Fog Advisories / 2021
Dense Fog Advisories in Oregon, December 2021
9 dense fog advisories in December 2021. 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 December 2021. Tap one for its archive.
- Dense Fog Advisories
- 9
- Busiest day
- December 3, 20212 dense fog advisories
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Dec 3, 8:05 AM PST | Dense Fog Advisory | BOI | Malheur | 115 min |
| Dec 3, 1:28 PM PST | Dense Fog Advisory | BOI | Malheur | 23 hr |
| Dec 7, 1:24 PM PST | Dense Fog Advisory | BOI | Malheur | 18 hr |
| Dec 17, 3:54 AM PST | Dense Fog Advisory | PQR | 6 hr | |
| Dec 20, 10:42 PM PST | Dense Fog Advisory | PQR | 5 hr | |
| Dec 21, 8:06 AM PST | Dense Fog Advisory | BOI | Malheur | 115 min |
| Dec 21, 7:28 PM PST | Dense Fog Advisory | BOI | Malheur | 10 hr |
| Dec 29, 9:37 PM PST | Dense Fog Advisory | BOI | Malheur | 4 hr |
| Dec 31, 8:30 AM PST | Dense Fog Advisory | MFR | Coos, Curry, Douglas, Jackson, Josephine | 90 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.