Alert archive / Oregon / Dense Fog Advisories

Dense Fog Advisories in Oregon, 2024

94 dense fog advisories in 2024. 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 2024. Tap one for its archive.

Dense Fog Advisories: 94
Busiest month: December28 dense fog advisories
Busiest day: January 29, 20244 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
Dec 31, 6:32 PM PST	Dense Fog Advisory	PQR		11 hr
Jan 1, 8:37 AM PST	Dense Fog Advisory	BOI	Malheur	3 hr
Jan 1, 1:07 PM PST	Dense Fog Advisory	BOI	Harney, Malheur	21 hr
Jan 1, 9:54 PM PST	Dense Fog Advisory	PQR		10 hr
Jan 2, 11:06 PM PST	Dense Fog Advisory	PQR		6 hr
Jan 3, 6:55 AM PST	Dense Fog Advisory	PDT	Umatilla	4 hr
Jan 4, 3:41 AM PST	Dense Fog Advisory	BOI	Malheur	6 hr
Jan 5, 12:38 AM PST	Dense Fog Advisory	PQR		5 hr
Jan 23, 3:46 AM PST	Dense Fog Advisory	PDT	Crook, Deschutes, Gilliam, Jefferson, Morrow, Sherman and 2 more	23 hr
Jan 23, 5:36 AM PST	Dense Fog Advisory	BOI	Malheur	6 hr
Jan 23, 3:34 PM PST	Dense Fog Advisory	BOI	Malheur	15 hr
Jan 24, 7:21 AM PST	Dense Fog Advisory	BOI	Malheur	3 hr
Jan 25, 7:27 PM PST	Dense Fog Advisory	BOI	Malheur	16 hr
Jan 28, 12:29 AM PST	Dense Fog Advisory	PDT	Morrow, Umatilla	10 hr
Jan 28, 5:28 AM PST	Dense Fog Advisory	MFR	Curry, Jackson, Josephine	5 hr
Jan 28, 3:54 PM PST	Dense Fog Advisory	PDT	Gilliam, Morrow, Sherman, Umatilla, Union, Wallowa and 2 more	65 hr
Jan 28, 9:51 PM PST	Dense Fog Advisory	BOI	Malheur	15 hr
Jan 28, 10:46 PM PST	Dense Fog Advisory	MFR	Coos, Curry, Douglas, Jackson, Josephine	13 hr
Jan 29, 12:03 AM PST	Dense Fog Advisory	PQR		10 hr
Jan 29, 10:27 AM PST	Dense Fog Advisory	PQR		93 min
Jan 30, 12:30 AM PST	Dense Fog Advisory	PQR		10 hr
Feb 2, 12:18 AM PST	Dense Fog Advisory	PDT	Gilliam, Morrow, Sherman, Umatilla, Wasco	12 hr
Feb 5, 9:21 PM PST	Dense Fog Advisory	PDT	Umatilla	14 hr
Feb 12, 6:15 PM PST	Dense Fog Advisory	PQR		16 hr
Feb 14, 3:12 AM PST	Dense Fog Advisory	PQR		4 hr
Feb 14, 10:19 PM PST	Dense Fog Advisory	PDT	Umatilla, Union, Wallowa	14 hr
Feb 18, 8:51 PM PST	Dense Fog Advisory	PDT	Crook, Deschutes, Jefferson, Sherman, Umatilla, Wasco	15 hr
Feb 19, 10:01 AM PST	Dense Fog Advisory	PDT	Crook, Deschutes, Gilliam, Jefferson, Morrow, Sherman and 3 more	23 hr
Feb 20, 11:31 PM PST	Dense Fog Advisory	PDT	Gilliam, Morrow, Umatilla, Wheeler	11 hr
Feb 22, 3:40 AM PST	Dense Fog Advisory	PDT	Gilliam, Sherman, Wasco	7 hr
Feb 24, 8:11 AM PST	Dense Fog Advisory	PQR		3 hr
Mar 6, 5:47 AM PST	Dense Fog Advisory	PQR	Columbia	4 hr
Mar 6, 11:40 PM PST	Dense Fog Advisory	PQR	Benton, Clatsop, Columbia, Lane, Lincoln, Polk and 3 more	11 hr
Mar 7, 3:18 AM PST	Dense Fog Advisory	BOI	Malheur	5 hr
Mar 18, 2:38 AM PDT	Dense Fog Advisory	PQR	Benton, Clatsop, Lane, Lincoln, Polk, Tillamook and 2 more	7 hr
Mar 23, 5:45 AM PDT	Dense Fog Advisory	PQR	Clackamas, Multnomah, Polk, Washington, Yamhill	3 hr
Apr 2, 7:27 AM PDT	Dense Fog Advisory	PQR	Clatsop, Lane, Lincoln, Tillamook	3 hr
May 3, 6:53 AM PDT	Dense Fog Advisory	PQR	Benton, Polk, Yamhill	2 hr
Jun 30, 9:45 PM PDT	Dense Fog Advisory	PQR	Lane, Lincoln	11 hr
Jul 18, 9:38 PM PDT	Dense Fog Advisory	PQR	Clatsop, Lane, Lincoln, Tillamook	3 min
Aug 30, 4:50 PM PDT	Dense Fog Advisory	PQR	Lane, Lincoln	3 min
Aug 30, 4:56 PM PDT	Dense Fog Advisory	PQR	Clatsop, Lane, Lincoln, Tillamook	18 hr
Sep 6, 8:01 AM PDT	Dense Fog Advisory	PQR	Clatsop, Lane, Lincoln, Tillamook	3 hr
Sep 24, 6:48 AM PDT	Dense Fog Advisory	PQR	Clatsop, Lane, Lincoln, Tillamook	4 hr
Sep 26, 2:43 AM PDT	Dense Fog Advisory	PQR	Benton, Clackamas, Columbia, Lane, Linn, Marion and 4 more	8 hr
Sep 28, 7:27 AM PDT	Dense Fog Advisory	PQR	Lane, Lincoln, Tillamook	3 hr
Oct 4, 11:11 PM PDT	Dense Fog Advisory	PQR	Benton, Clackamas, Clatsop, Columbia, Lane, Lincoln and 7 more	11 hr
Oct 6, 3:40 AM PDT	Dense Fog Advisory	PQR	Lane, Lincoln	5 hr
Oct 8, 11:33 PM PDT	Dense Fog Advisory	PQR	Lane, Lincoln	7 hr
Oct 13, 7:49 AM PDT	Dense Fog Advisory	PQR	Benton, Clatsop, Columbia, Lane, Lincoln, Linn and 4 more	3 hr
Oct 22, 8:09 AM PDT	Dense Fog Advisory	PQR	Clackamas, Columbia, Marion, Multnomah	3 hr
Oct 24, 4:03 AM PDT	Dense Fog Advisory	PQR	Benton, Lane, Lincoln, Linn, Polk	7 hr
Oct 29, 7:47 AM PDT	Dense Fog Advisory	PQR	Benton, Clackamas, Clatsop, Columbia, Lane, Lincoln and 7 more	3 hr
Oct 31, 1:20 AM PDT	Dense Fog Advisory	MFR	Curry, Jackson, Josephine	6 hr
Nov 3, 7:05 AM PST	Dense Fog Advisory	PDT	Umatilla, Union, Wallowa	4 hr
Nov 6, 2:41 AM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Lane, Linn, Marion, Polk and 1 more	6 hr
Nov 7, 1:32 AM PST	Dense Fog Advisory	PQR	Benton, Lane, Linn	9 hr
Nov 7, 3:41 AM PST	Dense Fog Advisory	MFR	Coos, Douglas	5 hr
Nov 8, 4:27 AM PST	Dense Fog Advisory	MFR	Coos, Douglas	6 hr
Nov 24, 1:07 AM PST	Dense Fog Advisory	MFR	Jackson	10 hr
Nov 25, 11:11 PM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Clatsop, Columbia, Lane, Lincoln and 6 more	10 hr
Nov 26, 6:00 AM PST	Dense Fog Advisory	PDT	Umatilla	4 hr
Nov 26, 9:39 AM PST	Dense Fog Advisory	PDT	Umatilla, Union, Wallowa	101 min
Nov 27, 8:56 AM PST	Dense Fog Advisory	PQR	Clackamas, Lane, Linn, Marion	2 hr
Nov 27, 8:37 PM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Clatsop, Columbia, Lane, Lincoln and 7 more	14 hr
Nov 29, 4:53 PM PST	Dense Fog Advisory	MFR	Jackson	18 hr
Dec 1, 4:25 AM PST	Dense Fog Advisory	PQR	Clackamas, Columbia, Lane, Multnomah, Washington	8 hr
Dec 1, 7:01 AM PST	Dense Fog Advisory	BOI	Malheur	6 hr
Dec 1, 3:59 PM PST	Dense Fog Advisory	BOI	Malheur	21 hr
Dec 1, 4:42 PM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Lane, Linn, Marion, Polk and 1 more	18 hr
Dec 2, 3:53 PM PST	Dense Fog Advisory	BOI	Malheur	5 days
Dec 4, 8:00 PM PST	Dense Fog Advisory	MFR	Coos, Curry, Douglas, Jackson, Josephine	12 hr
Dec 5, 4:03 PM PST	Dense Fog Advisory	PQR	Benton, Lane, Linn	20 hr
Dec 6, 9:06 PM PST	Dense Fog Advisory	PQR	Benton, Lane, Linn	6 hr
Dec 7, 11:56 PM PST	Dense Fog Advisory	MFR	Coos, Curry, Douglas, Jackson, Josephine, Klamath and 1 more	9 hr
Dec 8, 2:34 AM PST	Dense Fog Advisory	BOI	Malheur	10 hr
Dec 8, 7:50 PM PST	Dense Fog Advisory	BOI	Malheur	14 hr
Dec 8, 8:22 PM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Clatsop, Columbia, Lane, Lincoln and 7 more	16 hr
Dec 9, 1:29 AM PST	Dense Fog Advisory	MFR	Coos, Curry, Douglas, Jackson, Josephine	9 hr
Dec 9, 4:24 PM PST	Dense Fog Advisory	BOI	Malheur	19 hr
Dec 9, 6:53 PM PST	Dense Fog Advisory	PDT	Gilliam, Morrow, Sherman, Umatilla, Union, Wallowa and 1 more	17 hr
Dec 9, 8:11 PM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Columbia, Lane, Linn, Marion and 3 more	14 hr
Dec 10, 12:52 AM PST	Dense Fog Advisory	MFR	Coos, Curry, Douglas, Jackson, Josephine	6 hr
Dec 10, 5:17 PM PST	Dense Fog Advisory	BOI	Malheur	18 hr
Dec 11, 2:31 AM PST	Dense Fog Advisory	PQR	Benton, Lane, Linn	6 hr
Dec 14, 5:02 AM PST	Dense Fog Advisory	PDT	Morrow, Umatilla	9 hr
Dec 19, 1:18 PM PST	Dense Fog Advisory	BOI	Harney, Malheur	15 hr
Dec 19, 8:13 PM PST	Dense Fog Advisory	PDT	Umatilla	7 hr
Dec 20, 11:41 PM PST	Dense Fog Advisory	PDT	Morrow, Umatilla	12 hr
Dec 21, 1:42 AM PST	Dense Fog Advisory	PQR	Benton, Lane, Linn	4 hr
Dec 23, 1:52 AM PST	Dense Fog Advisory	MFR	Coos, Curry, Douglas, Jackson, Josephine	8 hr
Dec 23, 8:01 AM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Clatsop, Columbia, Lane, Lincoln and 5 more	3 hr
Dec 23, 9:35 AM PST	Dense Fog Advisory	PDT	Gilliam, Sherman, Wasco	15 hr
Dec 30, 9:43 PM PST	Dense Fog Advisory	PQR	Benton, Clackamas, Lane, Linn, Marion, Polk and 1 more	13 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 now Tornadoes on record The radar archive 2023 2025

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.