Alert archive / California / Dense Fog Advisories

Dense Fog Advisories in California, 2012

93 dense fog advisories in 2012. 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 2012. Tap one for its archive.

Dense Fog Advisories: 93
Busiest month: November29 dense fog advisories
Busiest day: November 25, 20125 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, 6:16 PM PST	Dense Fog Advisory	LOX		14 hr
Jan 1, 5:40 AM PST	Dense Fog Advisory	STO		4 hr
Jan 1, 1:25 PM PST	Dense Fog Advisory	SGX	San Diego	21 hr
Jan 1, 9:28 PM PST	Dense Fog Advisory	LOX		12 hr
Jan 2, 1:20 PM PST	Dense Fog Advisory	SGX	San Diego	19 hr
Jan 3, 4:11 AM PST	Dense Fog Advisory	HNX		7 hr
Jan 3, 6:03 AM PST	Dense Fog Advisory	MTR	Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara and 1 more	4 hr
Jan 4, 2:15 AM PST	Dense Fog Advisory	HNX		9 hr
Jan 9, 4:09 AM PST	Dense Fog Advisory	MFR	Siskiyou	5 hr
Jan 23, 11:40 PM PST	Dense Fog Advisory	STO		11 hr
Jan 31, 4:43 AM PST	Dense Fog Advisory	STO		5 hr
Feb 8, 5:06 AM PST	Dense Fog Advisory	MTR	Alameda, Contra Costa, Marin, Napa, Sonoma	4 hr
Feb 12, 4:29 AM PST	Dense Fog Advisory	MTR	Marin, Napa, Sonoma	7 hr
Feb 12, 7:26 AM PST	Dense Fog Advisory	STO		3 hr
Feb 24, 6:45 AM PST	Dense Fog Advisory	SGX	San Diego	2 hr
Mar 21, 9:35 PM PDT	Dense Fog Advisory	LOX		5 hr
Mar 29, 5:23 AM PDT	Dense Fog Advisory	LOX		4 hr
Mar 30, 2:37 AM PDT	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	6 hr
Apr 20, 9:05 PM PDT	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	12 hr
Apr 21, 8:00 PM PDT	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	13 hr
May 9, 2:09 AM PDT	Dense Fog Advisory	LOX		7 hr
May 9, 2:48 AM PDT	Dense Fog Advisory	SGX	San Diego	5 hr
Jul 7, 4:54 AM PDT	Dense Fog Advisory	LOX		4 hr
Jul 8, 3:43 AM PDT	Dense Fog Advisory	LOX		5 hr
Sep 3, 3:02 AM PDT	Dense Fog Advisory	MTR	Monterey, San Mateo, Santa Cruz	6 hr
Sep 22, 7:25 AM PDT	Dense Fog Advisory	SGX	San Diego	2 hr
Sep 23, 3:25 AM PDT	Dense Fog Advisory	SGX	San Diego	5 hr
Sep 23, 7:09 AM PDT	Dense Fog Advisory	MTR	Monterey, San Benito	3 hr
Sep 24, 1:38 AM PDT	Dense Fog Advisory	LOX		7 hr
Oct 1, 6:55 AM PDT	Dense Fog Advisory	LOX		2 hr
Oct 3, 1:11 PM PDT	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	17 hr
Oct 15, 11:00 PM PDT	Dense Fog Advisory	SGX	San Diego	10 hr
Oct 19, 11:50 PM PDT	Dense Fog Advisory	LOX		4 hr
Oct 28, 10:04 PM PDT	Dense Fog Advisory	LOX		11 hr
Oct 29, 3:16 AM PDT	Dense Fog Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more	5 hr
Oct 29, 1:20 PM PDT	Dense Fog Advisory	MTR	Marin, Monterey, Napa, San Benito, City and County of San Francisco, San Mateo and 2 more	20 hr
Oct 29, 7:04 PM PDT	Dense Fog Advisory	LOX		14 hr
Oct 29, 7:50 PM PDT	Dense Fog Advisory	SGX	San Diego	12 hr
Oct 30, 7:10 PM PDT	Dense Fog Advisory	SGX	San Diego	8 hr
Oct 30, 8:00 PM PDT	Dense Fog Advisory	LOX		8 hr
Nov 1, 6:37 AM PDT	Dense Fog Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	2 hr
Nov 6, 5:05 AM PST	Dense Fog Advisory	SGX	San Diego	3 hr
Nov 6, 4:42 PM PST	Dense Fog Advisory	SGX	San Diego	8 hr
Nov 6, 8:58 PM PST	Dense Fog Advisory	LOX		12 hr
Nov 14, 8:15 PM PST	Dense Fog Advisory	SGX	San Diego	10 hr
Nov 19, 2:23 PM PST	Dense Fog Advisory	HNX		15 hr
Nov 22, 6:15 AM PST	Dense Fog Advisory	SGX	San Diego	3 hr
Nov 22, 7:06 AM PST	Dense Fog Advisory	LOX		114 min
Nov 22, 1:00 PM PST	Dense Fog Advisory	SGX	San Diego	21 hr
Nov 22, 8:46 PM PST	Dense Fog Advisory	HNX		15 hr
Nov 23, 1:37 AM PST	Dense Fog Advisory	LOX		9 hr
Nov 23, 1:10 PM PST	Dense Fog Advisory	SGX	San Diego	20 hr
Nov 23, 2:05 PM PST	Dense Fog Advisory	LOX	Los Angeles	20 hr
Nov 24, 3:54 AM PST	Dense Fog Advisory	HNX		6 hr
Nov 24, 5:13 AM PST	Dense Fog Advisory	STO		5 hr
Nov 24, 1:30 PM PST	Dense Fog Advisory	SGX	San Diego	20 hr
Nov 24, 3:30 PM PST	Dense Fog Advisory	LOX	Los Angeles	19 hr
Nov 24, 5:53 PM PST	Dense Fog Advisory	SGX	San Diego	16 hr
Nov 25, 2:01 AM PST	Dense Fog Advisory	HNX		9 hr
Nov 25, 5:35 AM PST	Dense Fog Advisory	MTR	Marin, Napa, Sonoma	3 hr
Nov 25, 8:06 AM PST	Dense Fog Advisory	STO		114 min
Nov 25, 1:50 PM PST	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	19 hr
Nov 25, 8:38 PM PST	Dense Fog Advisory	LOX	Los Angeles	6 hr
Nov 26, 3:52 AM PST	Dense Fog Advisory	MTR	Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 2 more	5 hr
Nov 26, 5:40 AM PST	Dense Fog Advisory	STO		4 hr
Nov 26, 7:55 AM PST	Dense Fog Advisory	HNX		4 hr
Nov 27, 4:58 AM PST	Dense Fog Advisory	HNX		6 hr
Nov 27, 7:40 AM PST	Dense Fog Advisory	STO		2 hr
Nov 29, 10:34 PM PST	Dense Fog Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	11 hr
Dec 1, 5:03 PM PST	Dense Fog Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	17 hr
Dec 3, 9:53 PM PST	Dense Fog Advisory	HNX		14 hr
Dec 4, 2:40 AM PST	Dense Fog Advisory	SGX	Riverside, San Bernardino	6 hr
Dec 4, 9:00 PM PST	Dense Fog Advisory	SGX	San Diego	12 hr
Dec 4, 9:33 PM PST	Dense Fog Advisory	LOX		11 hr
Dec 5, 9:11 AM PST	Dense Fog Advisory	LOX		109 min
Dec 6, 1:20 AM PST	Dense Fog Advisory	LOX		4 hr
Dec 6, 1:27 AM PST	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	7 hr
Dec 7, 2:13 AM PST	Dense Fog Advisory	LOX		8 hr
Dec 7, 2:38 AM PST	Dense Fog Advisory	SGX	San Diego	7 hr
Dec 7, 2:00 PM PST	Dense Fog Advisory	SGX	San Diego	20 hr
Dec 8, 1:33 AM PST	Dense Fog Advisory	STO		9 hr
Dec 8, 2:46 AM PST	Dense Fog Advisory	LOX	Los Angeles	7 hr
Dec 8, 1:20 PM PST	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	21 hr
Dec 8, 1:55 PM PST	Dense Fog Advisory	LOX		14 hr
Dec 8, 8:30 PM PST	Dense Fog Advisory	STO		13 hr
Dec 10, 1:16 PM PST	Dense Fog Advisory	SGX	San Diego	14 hr
Dec 11, 1:51 AM PST	Dense Fog Advisory	HNX		10 hr
Dec 13, 12:00 PM PST	Dense Fog Advisory	HNX		24 hr
Dec 17, 8:00 PM PST	Dense Fog Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	13 hr
Dec 24, 7:27 AM PST	Dense Fog Advisory	STO		3 hr
Dec 25, 5:31 AM PST	Dense Fog Advisory	HNX		5 hr
Dec 27, 8:27 AM PST	Dense Fog Advisory	STO		3 hr
Dec 30, 1:52 AM PST	Dense Fog Advisory	SGX	Riverside, San Bernardino, San Diego	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 now Tornadoes on record The radar archive 2011 2013

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.