Weather alerts in California, December 2017

211 weather alerts in December 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in December 2017. Tap one for its archive.

Alerts: 211
Warnings: 63
Watches: 39
Advisories: 105
Busiest day: December 3, 201725 alerts

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
Nov 30, 9:04 PM PST	Small Craft Advisory for Rough Bar	MTR		30 hr
Dec 1, 3:00 AM PST	Dense Fog Advisory	HNX		7 hr
Dec 1, 1:04 PM PST	Winter Weather Advisory	MFR	Modoc, Siskiyou	42 hr
Dec 1, 2:34 PM PST	Fire Weather Watch	SGX	Orange, Riverside, San Bernardino, San Diego	23 hr
Dec 1, 2:41 PM PST	Fire Weather Watch	LOX	Los Angeles	24 hr
Dec 1, 3:05 PM PST	Small Craft Advisory	MTR		12 hr
Dec 1, 8:19 PM PST	Small Craft Advisory	LOX		4 days
Dec 2, 2:40 AM PST	Small Craft Advisory	MTR		72 hr
Dec 2, 4:29 AM PST	Dense Fog Advisory	HNX		7 hr
Dec 2, 12:27 PM PST	Hard Freeze Watch	HNX		44 hr
Dec 2, 2:00 PM PST	Red Flag Warning	SGX	Orange, Riverside, San Bernardino, San Diego	8 days
Dec 2, 2:41 PM PST	Red Flag Warning	LOX	Los Angeles	13 days
Dec 2, 3:54 PM PST	Wind Advisory	VEF	Inyo	29 hr
Dec 2, 7:01 PM PST	Coastal Flood Warning	MTR	Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma	40 hr
Dec 2, 7:14 PM PST	High Wind Watch	SGX	Orange, Riverside, San Bernardino, San Diego	19 hr
Dec 2, 7:41 PM PST	Freeze Watch	LOX	Santa Barbara	42 hr
Dec 2, 7:41 PM PST	High Wind Watch	LOX	Los Angeles	19 hr
Dec 2, 7:41 PM PST	Hard Freeze Watch	LOX		42 hr
Dec 2, 8:18 PM PST	Gale Watch	LOX		6 hr
Dec 3, 2:21 AM PST	Beach Hazards Statement	LOX		9 hr
Dec 3, 2:27 AM PST	Freeze Watch	VEF	Inyo, San Bernardino	31 hr
Dec 3, 2:27 AM PST	Wind Advisory	VEF	San Bernardino	4 days
Dec 3, 2:32 AM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	31 hr
Dec 3, 2:34 AM PST	Coastal Flood Advisory	EKA	Humboldt	11 hr
Dec 3, 3:09 AM PST	Wind Advisory	MTR		48 hr
Dec 3, 3:38 AM PST	Freeze Warning	SGX	San Bernardino	23 hr
Dec 3, 3:38 AM PST	Freeze Warning	SGX	San Bernardino	23 hr
Dec 3, 4:12 AM PST	Wind Advisory	LOX	Los Angeles	5 days
Dec 3, 8:28 AM PST	Wind Advisory	EKA	Mendocino	47 hr
Dec 3, 12:45 PM PST	Freeze Watch	STO		15 hr
Dec 3, 12:45 PM PST	Freeze Watch	STO		15 hr
Dec 3, 12:57 PM PST	Hard Freeze Warning	HNX		20 hr
Dec 3, 1:46 PM PST	Hard Freeze Watch	VEF		19 hr
Dec 3, 1:54 PM PST	Freeze Warning	EKA	Del Norte, Humboldt	20 hr
Dec 3, 2:28 PM PST	High Wind Warning	SGX	Orange, Riverside, San Bernardino, San Diego	7 days
Dec 3, 2:36 PM PST	Frost Advisory	LOX		17 hr
Dec 3, 2:36 PM PST	Freeze Warning	LOX	Santa Barbara	17 hr
Dec 3, 2:36 PM PST	High Wind Warning	LOX	Los Angeles	4 days
Dec 3, 6:31 PM PST	Gale Watch	LOX		14 hr
Dec 3, 7:06 PM PST	Small Craft Advisory	EKA		17 hr
Dec 4, 1:58 AM PST	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	32 hr
Dec 4, 2:12 AM PST	Beach Hazards Statement	EKA	Del Norte, Humboldt, Mendocino	38 hr
Dec 4, 2:13 AM PST	Small Craft Advisory	SGX		47 hr
Dec 4, 3:27 AM PST	Freeze Warning	STO		24 hr
Dec 4, 3:27 AM PST	Wind Advisory	STO		29 hr
Dec 4, 3:40 AM PST	Freeze Watch	MTR	Marin, Monterey, Napa, Sonoma	23 hr
Dec 4, 3:40 AM PST	Freeze Warning	MTR	Monterey	29 hr
Dec 4, 8:53 AM PST	Hard Freeze Warning	HNX		23 hr
Dec 4, 8:58 AM PST	Gale Warning	LOX		33 hr
Dec 4, 9:08 AM PST	Freeze Warning	VEF	Inyo, San Bernardino	24 hr
Dec 4, 9:08 AM PST	Hard Freeze Warning	VEF		24 hr
Dec 4, 10:13 AM PST	Frost Advisory	EKA	Del Norte, Humboldt	23 hr
Dec 4, 1:28 PM PST	Freeze Warning	LOX	Santa Barbara	19 hr
Dec 4, 1:28 PM PST	Hard Freeze Warning	LOX		19 hr
Dec 4, 7:34 PM PST	Freeze Watch	LOX	Santa Barbara	18 hr
Dec 4, 9:29 PM PST	Small Craft Advisory	LOX		5 hr
Dec 4, 10:10 PM PST	Wind Advisory	HNX		12 hr
Dec 5, 3:06 AM PST	Freeze Warning	MTR	Marin, Monterey, Napa, Sonoma	30 hr
Dec 5, 12:29 PM PST	Frost Advisory	STO		22 hr
Dec 5, 1:17 PM PST	Freeze Warning	LOX	Santa Barbara	20 hr
Dec 5, 1:17 PM PST	High Wind Watch	LOX	Los Angeles	25 hr
Dec 5, 1:17 PM PST	Wind Advisory	LOX	Los Angeles	70 hr
Dec 5, 8:36 PM PST	Small Craft Advisory	LOX		42 hr
Dec 6, 2:53 AM PST	Small Craft Advisory	MTR		36 hr
Dec 6, 4:19 AM PST	Gale Watch	LOX		10 hr
Dec 6, 12:03 PM PST	Small Craft Advisory	SGX		32 hr
Dec 6, 2:03 PM PST	Gale Warning	LOX		28 hr
Dec 6, 2:24 PM PST	Frost Advisory	LOX		19 hr
Dec 6, 5:02 PM PST	Freeze Warning	MTR	Monterey	16 hr
Dec 7, 2:26 AM PST	Wind Advisory	PSR	Imperial, Riverside, San Bernardino	10 hr
Dec 7, 2:28 AM PST	Red Flag Warning	PSR	Imperial, Riverside	13 hr
Dec 7, 3:21 AM PST	Red Flag Warning	HNX		37 hr
Dec 7, 3:24 AM PST	Red Flag Warning	VEF	San Bernardino	12 hr
Dec 7, 2:34 PM PST	Wind Advisory	LOX	Los Angeles	24 hr
Dec 7, 8:47 PM PST	Small Craft Advisory	LOX		6 hr
Dec 9, 2:50 AM PST	Small Craft Advisory	MTR		42 hr
Dec 9, 3:10 AM PST	Wind Advisory	LOX	Los Angeles	36 hr
Dec 9, 2:01 PM PST	Small Craft Advisory	LOX		28 hr
Dec 9, 2:21 PM PST	Wind Advisory	LOX		25 hr
Dec 11, 2:24 AM PST	Small Craft Advisory	MTR		48 hr
Dec 12, 6:00 AM PST	Dense Fog Advisory	HNX		3 hr
Dec 12, 8:36 AM PST	Small Craft Advisory	EKA		5 days
Dec 12, 10:39 AM PST	Red Flag Warning	HNX		4 days
Dec 12, 11:08 AM PST	Beach Hazards Statement	EKA	Del Norte, Humboldt, Mendocino	59 hr
Dec 12, 12:12 PM PST	Small Craft Advisory	MTR		14 hr
Dec 12, 12:51 PM PST	Fire Weather Watch	SGX	Orange, Riverside, San Bernardino, San Diego	20 hr
Dec 12, 2:30 PM PST	Fire Weather Watch	LOX		19 hr
Dec 12, 9:06 PM PST	Frost Advisory	LOX		12 hr
Dec 13, 2:37 AM PST	Wind Advisory	VEF	San Bernardino	39 hr
Dec 13, 2:41 AM PST	Fire Weather Watch	VEF	San Bernardino	11 hr
Dec 13, 8:44 AM PST	Red Flag Warning	SGX	Orange, Riverside, San Bernardino, San Diego	49 hr
Dec 13, 1:45 PM PST	Wind Advisory	LOX	Los Angeles	37 hr
Dec 13, 1:59 PM PST	Red Flag Warning	VEF	San Bernardino	28 hr
Dec 13, 7:00 PM PST	Small Craft Advisory	LOX		19 hr
Dec 14, 1:29 AM PST	Wind Advisory	PSR	Imperial, Riverside, San Bernardino	15 hr
Dec 14, 1:41 AM PST	Red Flag Warning	PSR	Imperial, Riverside, San Bernardino	14 hr
Dec 14, 2:40 AM PST	Small Craft Advisory	MTR		3 days
Dec 14, 2:49 AM PST	Gale Watch	EKA		24 hr
Dec 14, 9:21 AM PST	Fire Weather Watch	MTR	Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz	17 hr
Dec 14, 9:25 AM PST	Wind Advisory	MTR	Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz	3 days
Dec 14, 1:43 PM PST	Fire Weather Watch	SGX	Orange, Riverside, San Bernardino, San Diego	46 hr
Dec 14, 2:00 PM PST	Gale Watch	LOX		13 hr
Dec 14, 2:17 PM PST	Fire Weather Watch	STO		12 hr
Dec 14, 2:33 PM PST	Fire Weather Watch	LOX		19 hr
Dec 14, 2:33 PM PST	Fire Weather Watch	LOX	Los Angeles	23 hr
Dec 14, 2:54 PM PST	Gale Watch	MTR		6 hr
Dec 14, 8:56 PM PST	Gale Warning	MTR		54 hr
Dec 15, 2:00 AM PST	Red Flag Warning	MTR	Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz	56 hr
Dec 15, 2:14 AM PST	Red Flag Warning	STO		56 hr
Dec 15, 2:33 AM PST	Gale Warning	EKA		48 hr
Dec 15, 2:33 AM PST	Wind Advisory	STO		39 hr
Dec 15, 3:14 AM PST	Gale Warning	LOX		41 hr
Dec 15, 3:14 AM PST	Small Craft Advisory	LOX		72 hr
Dec 15, 3:52 AM PST	High Surf Advisory	LOX		53 hr
Dec 15, 9:51 AM PST	Red Flag Warning	LOX	Los Angeles	58 hr
Dec 15, 10:35 AM PST	Wind Advisory	HNX		32 hr
Dec 15, 12:41 PM PST	Red Flag Warning	SGX	Orange, Riverside, San Bernardino, San Diego	55 hr
Dec 15, 1:09 PM PST	Wind Advisory	VEF	Inyo, San Bernardino	49 hr
Dec 15, 1:57 PM PST	Red Flag Warning	LOX	Los Angeles	54 hr
Dec 15, 2:17 PM PST	Small Craft Advisory	MTR		36 hr
Dec 15, 3:17 PM PST	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	42 hr
Dec 16, 4:32 AM PST	Wind Advisory	LOX	Los Angeles	52 hr
Dec 16, 4:32 AM PST	Wind Advisory	LOX	Los Angeles	39 hr
Dec 16, 8:15 AM PST	High Wind Warning	LOX		6 hr
Dec 16, 8:51 AM PST	Small Craft Advisory	EKA		18 hr
Dec 16, 8:51 AM PST	Hazardous Seas Warning	EKA		18 hr
Dec 16, 12:59 PM PST	Wind Advisory	PSR	Riverside, San Bernardino	16 hr
Dec 16, 1:32 PM PST	Wind Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	30 hr
Dec 16, 1:33 PM PST	Air Stagnation Advisory	MFR	Modoc, Siskiyou	62 hr
Dec 17, 2:43 AM PST	Small Craft Advisory	MTR		17 hr
Dec 17, 3:09 AM PST	High Wind Warning	LOX		11 hr
Dec 17, 3:23 AM PST	Small Craft Advisory	EKA		5 hr
Dec 17, 8:44 AM PST	Small Craft Advisory	EKA		13 hr
Dec 17, 9:13 AM PST	Small Craft Advisory	LOX		5 hr
Dec 17, 2:03 PM PST	High Surf Advisory	LOX		117 min
Dec 17, 2:58 PM PST	Winter Storm Watch	MFR	Siskiyou	25 hr
Dec 17, 7:49 PM PST	Frost Advisory	LOX		13 hr
Dec 17, 7:49 PM PST	Freeze Warning	LOX		13 hr
Dec 17, 7:49 PM PST	Hard Freeze Warning	LOX	Santa Barbara	13 hr
Dec 17, 9:36 PM PST	High Wind Watch	MFR	Modoc	18 hr
Dec 18, 3:35 AM PST	High Wind Watch	REV	Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more	11 hr
Dec 18, 1:54 PM PST	Hard Freeze Watch	HNX		45 hr
Dec 18, 2:10 PM PST	Small Craft Advisory	MTR		68 hr
Dec 18, 2:25 PM PST	Wind Advisory	VEF	Inyo, San Bernardino	72 hr
Dec 18, 2:30 PM PST	Winter Weather Advisory	REV	Alpine, El Dorado, Lassen, Modoc, Nevada, Placer and 2 more	44 hr
Dec 18, 2:31 PM PST	Red Flag Warning	REV		44 hr
Dec 18, 2:32 PM PST	High Wind Warning	REV	Mono	44 hr
Dec 18, 2:32 PM PST	Wind Advisory	REV	Alpine, El Dorado, Lassen, Modoc, Nevada, Placer and 2 more	34 hr
Dec 18, 2:33 PM PST	Red Flag Warning	VEF	Inyo, San Bernardino, Tulare	72 hr
Dec 18, 2:35 PM PST	Small Craft Advisory	EKA		71 hr
Dec 18, 2:35 PM PST	Winter Weather Advisory	EKA	Del Norte, Humboldt, Trinity	46 hr
Dec 18, 2:54 PM PST	Winter Weather Advisory	STO		44 hr
Dec 18, 3:15 PM PST	Fire Weather Watch	LOX	Los Angeles	47 hr
Dec 18, 3:58 PM PST	Winter Storm Warning	MFR	Siskiyou	41 hr
Dec 18, 3:58 PM PST	Winter Weather Advisory	MFR	Modoc, Siskiyou	41 hr
Dec 19, 2:41 AM PST	Wind Advisory	PSR	Imperial, Riverside, San Bernardino	60 hr
Dec 19, 3:24 AM PST	Gale Watch	LOX		23 hr
Dec 19, 3:29 AM PST	Wind Advisory	VEF	San Bernardino	59 hr
Dec 19, 9:28 AM PST	Fire Weather Watch	SGX	Orange, Riverside, San Bernardino, San Diego	26 hr
Dec 19, 2:53 PM PST	Special Marine Warning	EKA		22 min
Dec 19, 2:53 PM PST	Red Flag Warning	LOX	Los Angeles	66 hr
Dec 19, 3:54 PM PST	Winter Weather Advisory	MFR	Modoc, Siskiyou	17 hr
Dec 19, 5:13 PM PST	Wind Advisory	SGX	Riverside, San Bernardino, San Diego	31 hr
Dec 19, 8:32 PM PST	Freeze Watch	LOX		15 hr
Dec 19, 8:32 PM PST	Hard Freeze Watch	LOX	Santa Barbara	15 hr
Dec 19, 8:32 PM PST	Wind Advisory	LOX	Los Angeles	42 hr
Dec 19, 8:45 PM PST	Small Craft Advisory	SGX		41 hr
Dec 20, 2:29 AM PST	Gale Warning	LOX		18 hr
Dec 20, 2:29 AM PST	Small Craft Advisory	LOX		36 hr
Dec 20, 5:33 AM PST	High Wind Warning	VEF	Inyo	6 hr
Dec 20, 11:08 AM PST	Hard Freeze Warning	HNX		46 hr
Dec 20, 11:17 AM PST	Freeze Warning	LOX		22 hr
Dec 20, 11:57 AM PST	Red Flag Warning	SGX	Orange, Riverside, San Bernardino, San Diego	30 hr
Dec 20, 2:12 PM PST	Small Craft Advisory	MTR		13 hr
Dec 20, 3:03 PM PST	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	28 hr
Dec 20, 3:43 PM PST	Blowing Dust Advisory	SGX	Riverside, San Bernardino, San Diego	8 hr
Dec 20, 5:57 PM PST	Freeze Warning	MTR	Monterey	15 hr
Dec 20, 7:48 PM PST	Hard Freeze Watch	LOX	Santa Barbara	18 hr
Dec 21, 2:09 AM PST	Frost Advisory	MTR	Marin, Monterey, San Mateo, Santa Cruz, Sonoma	31 hr
Dec 21, 2:09 AM PST	Freeze Warning	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more	31 hr
Dec 21, 3:44 AM PST	Dense Fog Advisory	HNX		6 hr
Dec 21, 10:28 AM PST	Blowing Dust Advisory	PSR	Imperial	6 hr
Dec 21, 1:40 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	19 hr
Dec 21, 1:51 PM PST	Frost Advisory	LOX		19 hr
Dec 21, 1:51 PM PST	Freeze Warning	LOX		19 hr
Dec 21, 1:51 PM PST	Hard Freeze Warning	LOX	Santa Barbara	19 hr
Dec 21, 2:07 PM PST	Small Craft Advisory	LOX		7 hr
Dec 22, 2:56 AM PST	Freezing Fog Advisory	HNX		6 hr
Dec 22, 12:20 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	21 hr
Dec 22, 12:54 PM PST	Freeze Warning	MTR	Monterey	20 hr
Dec 22, 1:10 PM PST	Frost Advisory	LOX		20 hr
Dec 22, 1:10 PM PST	Freeze Warning	LOX		20 hr
Dec 22, 1:10 PM PST	Hard Freeze Warning	LOX	Santa Barbara	20 hr
Dec 23, 10:08 AM PST	Beach Hazards Statement	EKA	Del Norte, Humboldt, Mendocino	31 hr
Dec 23, 4:57 PM PST	Frost Advisory	LOX		10 hr
Dec 23, 4:57 PM PST	Freeze Warning	LOX		10 hr
Dec 24, 2:56 AM PST	Red Flag Warning	HNX		32 hr
Dec 24, 2:57 PM PST	Small Craft Advisory	EKA		30 hr
Dec 24, 8:22 PM PST	Small Craft Advisory	LOX		7 hr
Dec 25, 2:13 PM PST	Small Craft Advisory	MTR		67 hr
Dec 26, 5:02 AM PST	Dense Fog Advisory	SGX	San Diego	71 min
Dec 26, 7:08 PM PST	Small Craft Advisory	LOX		23 hr
Dec 28, 11:39 AM PST	High Wind Watch	MFR	Modoc	3 hr
Dec 28, 3:01 PM PST	High Wind Warning	MFR	Modoc	24 hr
Dec 29, 2:33 PM PST	Wind Advisory	MFR	Modoc	19 hr
Dec 30, 5:12 AM PST	Dense Fog Advisory	LOX		4 hr
Dec 30, 7:35 AM PST	Dense Fog Advisory	HNX		2 hr
Dec 30, 2:26 PM PST	Small Craft Advisory	MTR		24 hr
Dec 30, 8:03 PM PST	Dense Fog Advisory	SGX	Orange, San Diego	9 hr
Dec 30, 9:29 PM PST	Dense Fog Advisory	LOX		12 hr
Dec 31, 9:25 AM PST	Dense Fog Advisory	LOX		95 min

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	6
Cold
Freeze Warning	19
Hard Freeze Warning	8
Freeze Watch	7
Hard Freeze Watch	6
Frost Advisory	13
Wind and dust
High Wind Warning	7
High Wind Watch	6
Blowing Dust Advisory	2
Lake Wind Advisory	3
Wind Advisory	30
Fire
Red Flag Warning	19
Fire Weather Watch	12
Fog and smoke
Air Stagnation Advisory	1
Dense Fog Advisory	10
Freezing Fog Advisory	1
Coast and beach
Coastal Flood Warning	1
Coastal Flood Advisory	1
High Surf Advisory	2
Beach Hazards Statement	4
Marine
Gale Warning	6
Hazardous Seas Warning	1
Special Marine Warning	1
Gale Watch	7
Small Craft Advisory	35
Small Craft Advisory for Rough Bar	1

Nearby

Alerts in force now Tornadoes on record The radar archive 2016 2018

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. Rebuilt daily.