Weather alerts in California, December 2022

420 weather alerts in December 2022, 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 2022. Tap one for its archive.

Alerts: 420
Warnings: 97
Watches: 61
Advisories: 229
Busiest day: December 31, 202234 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, 4:53 PM PST	Hazardous Seas Warning	EKA		10 hr
Nov 30, 6:33 PM PST	Freeze Warning	MTR	Marin, Monterey, Napa, San Benito, Santa Clara, Sonoma	38 hr
Dec 1, 1:40 AM PST	Wind Advisory	VEF	Inyo, San Bernardino	26 hr
Dec 1, 2:56 AM PST	Small Craft Advisory	EKA		35 hr
Dec 1, 3:04 AM PST	Wind Advisory	HNX	Kern	25 hr
Dec 1, 6:08 AM PST	Wind Advisory	LOX	San Luis Obispo, Santa Barbara	6 hr
Dec 1, 8:41 AM PST	Areal Flood Advisory	MTR	City and County of San Francisco, San Mateo, Santa Clara, Santa Cruz	3 hr
Dec 1, 9:41 AM PST	Areal Flood Advisory	MTR	Alameda, Contra Costa, San Mateo, Santa Clara	2 hr
Dec 1, 9:54 AM PST	Mesoscale Discussion	SPC	El Dorado, Nevada, Placer, Plumas, Sierra	4 hr
Dec 1, 10:46 AM PST	Areal Flood Advisory	MTR	Monterey	4 hr
Dec 1, 11:10 AM PST	Winter Storm Watch	HNX	Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne	23 hr
Dec 1, 11:57 AM PST	Winter Storm Watch	VEF	Inyo	24 hr
Dec 1, 12:57 PM PST	Winter Storm Watch	STO		23 hr
Dec 1, 1:03 PM PST	Dense Fog Advisory	STO		21 hr
Dec 1, 1:47 PM PST	Winter Storm Watch	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	24 hr
Dec 1, 2:04 PM PST	Gale Watch	EKA		19 hr
Dec 1, 2:05 PM PST	Freeze Warning	EKA	Del Norte, Humboldt, Mendocino	19 hr
Dec 1, 9:15 PM PST	Dense Fog Advisory	HNX	Fresno, Kings, Madera, Merced, Tulare	12 hr
Dec 2, 3:28 AM PST	Freeze Warning	MTR	Marin, Napa, Santa Clara, Sonoma	26 hr
Dec 2, 4:13 AM PST	Winter Storm Watch	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	8 hr
Dec 2, 8:57 AM PST	Gale Warning	EKA		34 hr
Dec 2, 10:07 AM PST	Winter Storm Warning	HNX	Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne	50 hr
Dec 2, 11:44 AM PST	Winter Storm Warning	STO		63 hr
Dec 2, 11:44 AM PST	Winter Weather Advisory	STO		4 days
Dec 2, 12:00 PM PST	Winter Weather Advisory	EKA	Trinity	3 days
Dec 2, 12:20 PM PST	Winter Storm Warning	VEF	Inyo	48 hr
Dec 2, 1:37 PM PST	Small Craft Advisory	LOX		43 hr
Dec 2, 1:53 PM PST	Winter Storm Warning	REV	Alpine, El Dorado, Mono, Nevada, Placer	61 hr
Dec 2, 1:53 PM PST	Winter Weather Advisory	REV	Alpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more	4 days
Dec 2, 2:17 PM PST	Small Craft Advisory	EKA		48 hr
Dec 2, 2:32 PM PST	Small Craft Advisory	MTR		28 min
Dec 2, 2:32 PM PST	Small Craft Advisory	MTR		48 hr
Dec 2, 2:36 PM PST	Wind Advisory	MFR	Siskiyou	28 hr
Dec 2, 2:36 PM PST	Winter Weather Advisory	MFR	Siskiyou	3 days
Dec 2, 9:21 PM PST	Wind Advisory	LOX	San Luis Obispo, Santa Barbara	30 hr
Dec 2, 11:08 PM PST	Areal Flood Advisory	LOX	Santa Barbara	97 min
Dec 3, 3:01 AM PST	Small Craft Advisory	MTR		18 hr
Dec 3, 1:56 PM PST	Areal Flood Advisory	MTR	Monterey	7 hr
Dec 3, 2:53 PM PST	Small Craft Advisory	MTR		24 hr
Dec 3, 10:45 PM PST	Areal Flood Advisory	HNX	Fresno, Madera, Mariposa, Tuolumne	6 hr
Dec 4, 12:45 AM PST	Areal Flood Advisory	HNX	Fresno	6 hr
Dec 4, 1:27 PM PST	Winter Weather Advisory	HNX	Madera, Mariposa, Tuolumne	13 hr
Dec 4, 2:50 PM PST	Small Craft Advisory	MTR		24 hr
Dec 4, 3:52 PM PST	Special Marine Warning	EKA		38 min
Dec 4, 3:53 PM PST	Special Weather Statement	STO	Tehama	52 min
Dec 4, 6:40 PM PST	Special Weather Statement	EKA	Humboldt	50 min
Dec 4, 7:12 PM PST	Dense Fog Advisory	PSR	Imperial, Riverside	14 hr
Dec 5, 3:03 AM PST	Special Marine Warning	MTR		27 min
Dec 5, 5:13 AM PST	Special Marine Warning	MTR		32 min
Dec 5, 5:45 AM PST	Special Marine Warning	MTR		30 min
Dec 5, 6:11 AM PST	Special Weather Statement	MTR	Santa Cruz	34 min
Dec 5, 7:01 AM PST	Special Weather Statement	MTR	Santa Cruz	44 min
Dec 5, 2:01 PM PST	Small Craft Advisory	LOX		7 hr
Dec 5, 3:02 PM PST	Special Weather Statement	STO	Tehama	58 min
Dec 5, 10:52 PM PST	Special Marine Warning	MTR		22 min
Dec 5, 10:54 PM PST	Special Marine Warning	MTR		22 min
Dec 6, 3:31 AM PST	Special Weather Statement	MTR	Monterey	44 min
Dec 6, 9:32 AM PST	Special Marine Warning	MTR		43 min
Dec 6, 10:37 AM PST	Freeze Warning	MTR	Marin, Napa, Sonoma	21 hr
Dec 6, 2:37 PM PST	Special Weather Statement	HNX		23 min
Dec 6, 2:47 PM PST	Winter Weather Advisory	STO		60 hr
Dec 6, 2:56 PM PST	Winter Weather Advisory	EKA	Humboldt, Trinity	55 hr
Dec 6, 2:57 PM PST	Special Weather Statement	HNX		33 min
Dec 6, 2:58 PM PST	Winter Weather Advisory	MFR	Siskiyou	55 hr
Dec 6, 3:11 PM PST	Special Weather Statement	HNX	Kings	34 min
Dec 6, 3:19 PM PST	Special Weather Statement	HNX	Merced	41 min
Dec 6, 3:24 PM PST	Special Marine Warning	LOX		36 min
Dec 6, 3:45 PM PST	Special Weather Statement	HNX	Kings	45 min
Dec 6, 4:02 PM PST	Special Marine Warning	LOX		43 min
Dec 6, 4:25 PM PST	Special Weather Statement	HNX	Madera	35 min
Dec 6, 6:44 PM PST	Special Weather Statement	HNX	Kings	31 min
Dec 6, 7:16 PM PST	Special Weather Statement	HNX	Kings	29 min
Dec 6, 7:18 PM PST	Special Weather Statement	HNX	Kings	27 min
Dec 6, 8:23 PM PST	Frost Advisory	LOX	Ventura	12 hr
Dec 6, 8:23 PM PST	Freeze Watch	LOX	Ventura	17 hr
Dec 6, 8:53 PM PST	Small Craft Advisory	MTR		48 hr
Dec 7, 1:28 AM PST	Dense Fog Advisory	HNX	Fresno, Madera, Mariposa, Merced	10 hr
Dec 7, 2:20 AM PST	Gale Warning	EKA		34 hr
Dec 7, 2:20 AM PST	Small Craft Advisory	EKA		59 hr
Dec 7, 2:20 AM PST	Storm Watch	EKA		24 hr
Dec 7, 3:50 AM PST	High Wind Watch	MFR	Modoc, Siskiyou	41 hr
Dec 7, 8:37 AM PST	Wind Advisory	MFR	Modoc, Siskiyou	36 hr
Dec 7, 11:56 AM PST	Winter Storm Watch	VEF	Inyo	64 hr
Dec 7, 12:25 PM PST	Winter Storm Watch	HNX	Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne	25 hr
Dec 7, 12:40 PM PST	Winter Storm Watch	STO		24 hr
Dec 7, 12:41 PM PST	Winter Storm Watch	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	23 hr
Dec 7, 12:43 PM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	22 hr
Dec 7, 1:30 PM PST	Freeze Warning	LOX	Ventura	19 hr
Dec 7, 2:05 PM PST	Gale Watch	EKA		13 hr
Dec 7, 2:07 PM PST	Winter Storm Watch	EKA		19 hr
Dec 7, 3:21 PM PST	Winter Storm Watch	MFR	Modoc, Siskiyou	31 hr
Dec 7, 3:21 PM PST	Winter Storm Warning	MFR	Siskiyou	31 hr
Dec 8, 2:14 AM PST	Dense Fog Advisory	STO		7 hr
Dec 8, 2:37 AM PST	Gale Warning	EKA		52 hr
Dec 8, 2:37 AM PST	Storm Warning	EKA		49 hr
Dec 8, 2:52 AM PST	Wind Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino	52 hr
Dec 8, 3:01 AM PST	Gale Watch	MTR		24 hr
Dec 8, 9:01 AM PST	High Wind Warning	EKA	Del Norte, Humboldt, Trinity	43 hr
Dec 8, 9:31 AM PST	Winter Storm Warning	EKA		53 hr
Dec 8, 9:31 AM PST	Winter Weather Advisory	EKA	Trinity	42 hr
Dec 8, 9:33 AM PST	Small Craft Advisory	EKA		27 hr
Dec 8, 11:46 AM PST	High Wind Warning	MFR	Siskiyou	43 hr
Dec 8, 11:46 AM PST	Wind Advisory	MFR	Siskiyou	51 hr
Dec 8, 11:50 AM PST	Wind Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more	54 hr
Dec 8, 11:55 AM PST	Winter Storm Warning	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	4 days
Dec 8, 11:58 AM PST	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	19 hr
Dec 8, 12:22 PM PST	Winter Storm Warning	STO		4 days
Dec 8, 12:29 PM PST	Wind Advisory	STO		51 hr
Dec 8, 12:56 PM PST	Winter Storm Warning	HNX	Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne	4 days
Dec 8, 2:29 PM PST	Gale Watch	LOX		24 hr
Dec 8, 2:46 PM PST	Small Craft Advisory	MTR		30 hr
Dec 8, 10:02 PM PST	Winter Storm Warning	MFR	Modoc, Siskiyou	42 hr
Dec 8, 10:02 PM PST	Winter Weather Advisory	MFR	Modoc, Siskiyou	72 hr
Dec 9, 1:22 AM PST	Winter Storm Warning	VEF	Inyo	68 hr
Dec 9, 2:50 AM PST	High Wind Watch	SGX	Riverside, San Bernardino, San Diego	11 hr
Dec 9, 2:52 AM PST	Gale Warning	MTR		36 hr
Dec 9, 2:52 AM PST	Small Craft Advisory	MTR		4 days
Dec 9, 3:12 AM PST	Small Craft Advisory	LOX		12 hr
Dec 9, 3:12 AM PST	Small Craft Advisory	LOX		4 days
Dec 9, 4:53 AM PST	High Wind Watch	LOX	San Luis Obispo, Santa Barbara	23 hr
Dec 9, 12:59 PM PST	Wind Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced	45 hr
Dec 9, 1:03 PM PST	Flood Watch	SGX	Riverside, San Bernardino	53 hr
Dec 9, 1:04 PM PST	Flash Flood Watch	LOX	Los Angeles	46 hr
Dec 9, 1:11 PM PST	Wind Advisory	REV	Modoc	30 hr
Dec 9, 1:11 PM PST	Winter Weather Advisory	REV	Modoc	45 hr
Dec 9, 1:28 PM PST	Small Craft Advisory	SGX		3 days
Dec 9, 1:29 PM PST	Wind Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	67 hr
Dec 9, 1:44 PM PST	Winter Storm Watch	SGX	Riverside, San Bernardino, San Diego	24 hr
Dec 9, 2:27 PM PST	Flash Flood Watch	MTR	Monterey	31 hr
Dec 9, 2:48 PM PST	Winter Storm Watch	LOX	Santa Barbara	24 hr
Dec 9, 2:51 PM PST	Gale Warning	LOX		35 hr
Dec 10, 2:37 AM PST	High Surf Advisory	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	65 hr
Dec 10, 2:53 AM PST	Small Craft Advisory	LOX		6 hr
Dec 10, 4:11 AM PST	Wind Advisory	VEF	Inyo, San Bernardino	39 hr
Dec 10, 4:16 AM PST	High Wind Warning	LOX	San Luis Obispo, Santa Barbara	31 hr
Dec 10, 4:16 AM PST	Wind Advisory	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	31 hr
Dec 10, 6:47 AM PST	Hazardous Seas Warning	EKA		14 hr
Dec 10, 7:41 AM PST	Areal Flood Advisory	MTR	Marin, Napa, Sonoma	5 hr
Dec 10, 9:03 AM PST	Areal Flood Advisory	MTR	Marin	5 hr
Dec 10, 9:19 AM PST	Gale Watch	LOX		5 hr
Dec 10, 10:23 AM PST	Areal Flood Advisory	STO	Colusa, Placer, Sacramento, San Joaquin, Solano, Sutter and 2 more	5 hr
Dec 10, 10:48 AM PST	Beach Hazards Statement	LOX	Santa Barbara	57 hr
Dec 10, 11:37 AM PST	Areal Flood Advisory	MTR	Alameda, Contra Costa, San Mateo, Santa Clara	4 hr
Dec 10, 12:37 PM PST	Areal Flood Advisory	MTR	San Mateo, Santa Clara, Santa Cruz	4 hr
Dec 10, 1:26 PM PST	Winter Storm Warning	SGX	Riverside, San Bernardino, San Diego	57 hr
Dec 10, 1:32 PM PST	Mesoscale Discussion	SPC	Alpine	6 hr
Dec 10, 2:03 PM PST	Flash Flood Warning	MTR	Monterey	4 hr
Dec 10, 2:10 PM PST	Flash Flood Warning	MTR	Monterey	4 hr
Dec 10, 2:16 PM PST	Flash Flood Warning	MTR	Monterey	5 hr
Dec 10, 2:21 PM PST	Winter Storm Warning	LOX	Santa Barbara	43 hr
Dec 10, 2:27 PM PST	Areal Flood Advisory	MTR	Monterey, San Benito, Santa Clara	5 hr
Dec 10, 3:32 PM PST	Areal Flood Advisory	STO	Amador, Calaveras, El Dorado, Placer, Sacramento, San Joaquin and 2 more	6 hr
Dec 10, 4:40 PM PST	Areal Flood Advisory	MTR	Santa Clara, Santa Cruz	67 min
Dec 10, 5:29 PM PST	Flash Flood Warning Considerable damage threat	HNX	Mariposa	3 hr
Dec 10, 5:31 PM PST	Flash Flood Warning Considerable damage threat	HNX	Madera, Mariposa	3 hr
Dec 10, 7:14 PM PST	Areal Flood Advisory	LOX	San Luis Obispo	5 hr
Dec 10, 8:27 PM PST	Areal Flood Advisory	LOX	Santa Barbara	7 hr
Dec 10, 10:05 PM PST	Small Craft Advisory	EKA		53 hr
Dec 10, 10:47 PM PST	Areal Flood Advisory	HNX	Fresno, Madera, Mariposa, Merced, Tulare, Tuolumne	6 hr
Dec 11, 12:16 AM PST	Areal Flood Advisory	MTR	Monterey, San Benito, Santa Clara, Santa Cruz	119 min
Dec 11, 12:43 AM PST	Areal Flood Advisory	MTR	Alameda, Contra Costa, San Mateo, Santa Clara	2 hr
Dec 11, 1:18 AM PST	Areal Flood Advisory	LOX	Los Angeles, Santa Barbara, Ventura	6 hr
Dec 11, 1:33 AM PST	Small Craft Advisory	LOX		55 hr
Dec 11, 2:28 AM PST	Special Weather Statement	HNX	Tuolumne	47 min
Dec 11, 3:06 AM PST	Gale Warning	MTR		30 hr
Dec 11, 3:11 AM PST	Winter Weather Advisory	SGX	Orange, Riverside, San Diego	37 hr
Dec 11, 3:27 AM PST	Wind Advisory	PSR	Imperial	15 hr
Dec 11, 3:32 AM PST	Areal Flood Advisory	LOX	Los Angeles	5 hr
Dec 11, 3:40 AM PST	Special Weather Statement	HNX	Mariposa	35 min
Dec 11, 6:30 AM PST	Areal Flood Advisory	SGX	San Bernardino	118 min
Dec 11, 6:50 AM PST	Areal Flood Advisory	SGX	Orange	2 hr
Dec 11, 7:32 AM PST	Areal Flood Advisory	SGX	Orange	2 hr
Dec 11, 7:52 AM PST	Areal Flood Advisory	SGX	Riverside, San Bernardino	119 min
Dec 11, 8:30 AM PST	Areal Flood Advisory	SGX	San Bernardino	110 min
Dec 11, 10:07 AM PST	Areal Flood Advisory	SGX	San Bernardino	119 min
Dec 11, 10:31 AM PST	Areal Flood Advisory	SGX	San Diego	2 hr
Dec 11, 12:41 PM PST	Freeze Watch	MTR	Marin, Napa, Sonoma	13 hr
Dec 11, 12:57 PM PST	Areal Flood Advisory	SGX	San Diego	3 hr
Dec 11, 1:05 PM PST	Winter Weather Advisory	HNX	Kern	27 hr
Dec 11, 6:33 PM PST	Winter Weather Advisory	LOX	Santa Barbara	15 hr
Dec 11, 10:53 PM PST	Special Weather Statement	MTR	Santa Cruz	37 min
Dec 12, 12:34 AM PST	Special Marine Warning	LOX		41 min
Dec 12, 12:50 AM PST	Special Marine Warning	LOX		40 min
Dec 12, 1:00 AM PST	Special Weather Statement	LOX	Ventura	60 min
Dec 12, 1:23 AM PST	Special Marine Warning	LOX		22 min
Dec 12, 1:33 AM PST	Freeze Watch	LOX	Santa Barbara, Ventura	11 hr
Dec 12, 1:49 AM PST	Freeze Warning	MTR	Marin, Napa, Sonoma	31 hr
Dec 12, 1:51 AM PST	Special Weather Statement	LOX	Ventura	54 min
Dec 12, 5:11 AM PST	Beach Hazards Statement	SGX	Orange, San Diego	11 hr
Dec 12, 6:39 AM PST	Special Marine Warning	LOX		36 min
Dec 12, 11:42 AM PST	Freeze Warning	VEF	San Bernardino	19 hr
Dec 12, 12:02 PM PST	Freeze Watch	PSR	Imperial, Riverside	14 hr
Dec 12, 12:02 PM PST	Freeze Watch	PSR	Imperial, Riverside	16 hr
Dec 12, 12:17 PM PST	Frost Advisory	LOX	Los Angeles, Santa Barbara, Ventura	20 hr
Dec 12, 1:04 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	20 hr
Dec 12, 1:52 PM PST	Freeze Watch	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	22 hr
Dec 12, 2:25 PM PST	Air Stagnation Advisory	MFR	Modoc, Siskiyou	7 days
Dec 13, 1:12 AM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, San Benito, San Mateo and 3 more	32 hr
Dec 13, 1:12 AM PST	Freeze Watch	MTR	Alameda, Contra Costa, Monterey, San Benito, Santa Clara	12 hr
Dec 13, 1:12 AM PST	Freeze Warning	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 2 more	32 hr
Dec 13, 1:44 AM PST	Freeze Warning	PSR	Imperial, Riverside	30 hr
Dec 13, 3:48 AM PST	Freeze Warning	PSR	Imperial, Riverside	52 hr
Dec 13, 11:22 AM PST	Freeze Warning	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	6 days
Dec 13, 1:03 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	20 hr
Dec 13, 2:05 PM PST	Frost Advisory	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	18 hr
Dec 14, 12:49 AM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, San Benito, San Mateo and 3 more	32 hr
Dec 14, 12:49 AM PST	Freeze Warning	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more	32 hr
Dec 14, 1:03 PM PST	Frost Advisory	LOX	Los Angeles, Ventura	19 hr
Dec 14, 11:32 PM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, San Benito, San Mateo and 3 more	33 hr
Dec 14, 11:32 PM PST	Freeze Warning	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more	33 hr
Dec 15, 6:51 AM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Merced, Tulare	5 hr
Dec 15, 11:48 AM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Merced, Tulare	24 hr
Dec 15, 12:43 PM PST	Freeze Watch	PSR	Imperial, Riverside	11 hr
Dec 15, 1:44 PM PST	Small Craft Advisory	LOX		24 hr
Dec 15, 1:47 PM PST	Wind Advisory	LOX	Los Angeles, Ventura	24 hr
Dec 15, 11:45 PM PST	Freeze Warning	PSR	Imperial, Riverside	32 hr
Dec 16, 2:09 AM PST	Freezing Fog Advisory	MFR	Modoc, Siskiyou	8 hr
Dec 16, 5:17 AM PST	Dense Fog Advisory	STO		6 hr
Dec 16, 12:13 PM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	46 hr
Dec 16, 1:05 PM PST	Dense Fog Advisory	STO		24 hr
Dec 17, 1:01 PM PST	Dense Fog Advisory	STO		24 hr
Dec 17, 2:38 PM PST	Dense Fog Advisory	HNX	Fresno, Kern	20 hr
Dec 18, 1:32 PM PST	Dense Fog Advisory	MTR	Alameda, Contra Costa, Marin, Napa, Sonoma	19 hr
Dec 18, 1:35 PM PST	Dense Fog Advisory	STO		22 hr
Dec 18, 5:00 PM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Merced, Tulare	17 hr
Dec 18, 5:35 PM PST	Frost Advisory	LOX	San Luis Obispo, Santa Barbara, Ventura	15 hr
Dec 18, 7:48 PM PST	Marine Dense Fog Advisory	MTR		13 hr
Dec 19, 1:02 PM PST	Winter Weather Advisory	MFR	Modoc	39 hr
Dec 19, 2:18 PM PST	Frost Advisory	LOX	Los Angeles, Ventura	18 hr
Dec 19, 2:47 PM PST	Small Craft Advisory	EKA		30 hr
Dec 20, 2:33 AM PST	Small Craft Advisory	LOX		54 hr
Dec 20, 5:33 AM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Tulare	5 hr
Dec 20, 11:43 AM PST	Small Craft Advisory	MTR		9 hr
Dec 20, 11:43 AM PST	Small Craft Advisory	MTR		39 hr
Dec 20, 2:16 PM PST	Coastal Flood Advisory	EKA	Humboldt, Mendocino	46 hr
Dec 20, 7:22 PM PST	Wind Advisory	LOX	Los Angeles, San Luis Obispo, Ventura	15 hr
Dec 20, 9:18 PM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	14 hr
Dec 21, 1:15 AM PST	Dense Fog Advisory	STO		12 hr
Dec 21, 11:57 AM PST	Beach Hazards Statement	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	3 days
Dec 21, 12:27 PM PST	Beach Hazards Statement	SGX	Orange, San Diego	72 hr
Dec 21, 1:19 PM PST	Winter Weather Advisory	MFR	Modoc, Siskiyou	45 hr
Dec 21, 1:31 PM PST	Coastal Flood Advisory	MTR	Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 2 more	4 days
Dec 21, 7:52 PM PST	Dense Fog Advisory	STO		15 hr
Dec 21, 8:29 PM PST	Dense Fog Advisory	MTR	Alameda, Contra Costa	12 hr
Dec 21, 8:34 PM PST	Marine Dense Fog Advisory	MTR		12 hr
Dec 22, 2:04 AM PST	Small Craft Advisory	EKA		5 days
Dec 22, 12:53 PM PST	Coastal Flood Advisory	EKA	Humboldt	24 hr
Dec 23, 1:42 AM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	10 hr
Dec 23, 2:56 AM PST	Small Craft Advisory	LOX		35 hr
Dec 23, 8:32 AM PST	Dense Fog Advisory	STO		2 hr
Dec 23, 12:03 PM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	25 hr
Dec 23, 12:52 PM PST	Dense Fog Advisory	STO		24 hr
Dec 23, 1:20 PM PST	Coastal Flood Advisory	EKA	Humboldt	25 hr
Dec 23, 2:46 PM PST	Small Craft Advisory	MTR		23 hr
Dec 23, 5:26 PM PST	Dense Fog Advisory	SGX	Orange, San Diego	15 hr
Dec 23, 9:11 PM PST	Dense Fog Advisory	MFR	Siskiyou	13 hr
Dec 24, 12:00 AM PST	Dense Fog Advisory	MTR	Monterey, San Benito	9 hr
Dec 24, 12:24 PM PST	Winter Storm Watch	HNX	Fresno, Madera, Mariposa, Tulare, Tuolumne	36 hr
Dec 24, 12:26 PM PST	Winter Storm Watch	STO		37 hr
Dec 24, 12:47 PM PST	Winter Storm Watch	VEF	Inyo	36 hr
Dec 24, 12:48 PM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	24 hr
Dec 24, 12:51 PM PST	Dense Fog Advisory	STO		23 hr
Dec 24, 12:51 PM PST	High Wind Watch	STO		42 hr
Dec 24, 1:30 PM PST	High Wind Watch	REV	Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more	24 hr
Dec 24, 1:45 PM PST	High Wind Watch	MFR	Modoc, Siskiyou	25 hr
Dec 24, 1:58 PM PST	Coastal Flood Advisory	EKA	Humboldt	24 hr
Dec 24, 2:17 PM PST	Flood Watch	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	66 hr
Dec 24, 6:24 PM PST	Freezing Fog Advisory	REV	Lassen, Plumas, Sierra	7 hr
Dec 24, 8:19 PM PST	Wind Advisory	LOX	San Luis Obispo, Ventura	8 hr
Dec 25, 2:07 AM PST	High Wind Watch	EKA	Del Norte, Humboldt	12 hr
Dec 25, 2:07 AM PST	Wind Advisory	EKA	Humboldt, Lake, Mendocino, Trinity	52 hr
Dec 25, 2:18 AM PST	Gale Warning	EKA		49 hr
Dec 25, 2:18 AM PST	Storm Watch	EKA		12 hr
Dec 25, 2:42 AM PST	Dense Fog Advisory	MTR	Alameda, Contra Costa, Marin, Napa, Sonoma	7 hr
Dec 25, 4:08 AM PST	Winter Storm Watch	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	24 hr
Dec 25, 5:43 AM PST	Dense Fog Advisory	EKA	Del Norte, Humboldt, Mendocino, Trinity	4 hr
Dec 25, 11:58 AM PST	Dense Fog Advisory	STO		23 hr
Dec 25, 11:58 AM PST	High Wind Warning	STO		46 hr
Dec 25, 1:02 PM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	22 hr
Dec 25, 1:31 PM PST	High Wind Warning	REV	Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more	44 hr
Dec 25, 1:31 PM PST	Wind Advisory	REV	Modoc	52 hr
Dec 25, 1:37 PM PST	Flood Watch	MTR	Marin, Monterey, Napa, City and County of San Francisco, San Mateo, Santa Clara and 2 more	49 hr
Dec 25, 1:48 PM PST	High Wind Warning	EKA	Del Norte, Humboldt	40 hr
Dec 25, 2:02 PM PST	Gale Warning	MTR		43 hr
Dec 25, 2:02 PM PST	Small Craft Advisory	MTR		37 hr
Dec 25, 2:10 PM PST	Wind Advisory	MTR	Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 3 more	43 hr
Dec 25, 2:19 PM PST	Storm Warning	EKA		37 hr
Dec 25, 2:19 PM PST	Beach Hazards Statement	MTR	Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma	43 hr
Dec 25, 2:19 PM PST	High Surf Advisory	MTR	Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma	67 hr
Dec 25, 2:20 PM PST	High Wind Warning	MFR	Modoc, Siskiyou	50 hr
Dec 25, 2:20 PM PST	Wind Advisory	MFR	Modoc, Siskiyou	50 hr
Dec 25, 3:08 PM PST	High Surf Advisory	EKA	Del Norte, Humboldt, Mendocino	55 hr
Dec 26, 12:13 AM PST	Winter Storm Warning	HNX	Fresno, Madera, Mariposa, Tulare, Tuolumne	52 hr
Dec 26, 12:14 AM PST	Flash Flood Watch	EKA		28 hr
Dec 26, 12:17 AM PST	Dense Fog Advisory	MTR	Alameda, Contra Costa	4 hr
Dec 26, 12:55 AM PST	Winter Storm Warning	VEF	Inyo	51 hr
Dec 26, 12:59 AM PST	Winter Storm Warning	STO		49 hr
Dec 26, 3:44 AM PST	Winter Storm Warning	REV	Alpine, El Dorado, Mono, Nevada, Placer	42 hr
Dec 26, 3:44 AM PST	Winter Weather Advisory	REV	Lassen, Plumas, Sierra	42 hr
Dec 26, 5:12 AM PST	High Surf Advisory	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	3 days
Dec 26, 5:40 AM PST	Small Craft Advisory	LOX		3 days
Dec 26, 6:40 AM PST	Wind Advisory	STO		27 hr
Dec 26, 8:28 AM PST	Small Craft Advisory	LOX		12 hr
Dec 26, 8:47 AM PST	Coastal Flood Advisory	EKA	Humboldt	6 hr
Dec 26, 12:52 PM PST	High Surf Advisory	SGX	Orange, San Diego	3 days
Dec 26, 7:34 PM PST	Flood Watch	HNX	Madera, Mariposa, Merced	23 hr
Dec 26, 8:10 PM PST	Areal Flood Advisory	EKA	Del Norte	7 hr
Dec 27, 1:12 AM PST	Small Craft Advisory	SGX		45 hr
Dec 27, 1:51 AM PST	Wind Advisory	VEF	San Bernardino	32 hr
Dec 27, 2:41 AM PST	Gale Warning	EKA		6 hr
Dec 27, 2:41 AM PST	Hazardous Seas Warning	EKA		24 hr
Dec 27, 2:52 AM PST	Areal Flood Advisory	MTR	Marin, Napa, Sonoma	10 hr
Dec 27, 3:51 AM PST	Areal Flood Advisory	MTR	Alameda, Contra Costa, City and County of San Francisco, San Mateo, Santa Clara	9 hr
Dec 27, 4:54 AM PST	Areal Flood Advisory	EKA	Mendocino	3 hr
Dec 27, 5:45 AM PST	Areal Flood Advisory	MTR	San Mateo, Santa Clara, Santa Cruz	7 hr
Dec 27, 6:38 AM PST	Areal Flood Advisory	MTR	Monterey, San Benito, Santa Clara	7 hr
Dec 27, 7:22 AM PST	Special Weather Statement	MTR	Marin	23 min
Dec 27, 7:24 AM PST	Wind Advisory	HNX	Fresno, Kern, Madera, Mariposa, Tulare	21 hr
Dec 27, 7:46 AM PST	Special Weather Statement	MTR	Alameda, Contra Costa	29 min
Dec 27, 7:52 AM PST	Special Weather Statement	MTR	San Mateo	8 min
Dec 27, 7:57 AM PST	Areal Flood Warning	EKA	Mendocino	63 min
Dec 27, 8:03 AM PST	Special Weather Statement	MTR	Marin	12 min
Dec 27, 8:08 AM PST	Areal Flood Advisory	REV	Alpine, El Dorado, Mono, Placer	112 min
Dec 27, 8:35 AM PST	Small Craft Advisory	MTR		66 hr
Dec 27, 9:50 AM PST	Areal Flood Advisory	HNX	Merced	3 hr
Dec 27, 11:11 AM PST	Areal Flood Advisory	LOX	San Luis Obispo, Santa Barbara	4 hr
Dec 27, 12:12 PM PST	Areal Flood Advisory	LOX	Santa Barbara	4 hr
Dec 27, 2:46 PM PST	Winter Storm Watch	EKA		13 hr
Dec 27, 3:37 PM PST	Special Weather Statement	HNX	Fresno	38 min
Dec 27, 5:35 PM PST	Areal Flood Advisory	HNX	Kern, Tulare	115 min
Dec 27, 7:18 PM PST	Areal Flood Advisory	HNX	Kern, Tulare	117 min
Dec 27, 8:46 PM PST	Dense Fog Advisory	STO		16 hr
Dec 28, 2:32 AM PST	Gale Warning	EKA		45 hr
Dec 28, 2:32 AM PST	Small Craft Advisory	EKA		18 hr
Dec 28, 2:44 AM PST	Winter Weather Advisory	MFR	Modoc, Siskiyou	59 hr
Dec 28, 3:24 AM PST	Wind Advisory	MFR	Siskiyou	55 hr
Dec 28, 3:30 AM PST	Winter Weather Advisory	STO		43 hr
Dec 28, 3:45 AM PST	Winter Storm Warning	EKA		31 hr
Dec 28, 3:45 AM PST	Winter Weather Advisory	EKA	Mendocino, Trinity	30 hr
Dec 28, 5:10 AM PST	Dense Fog Advisory	MTR	Monterey, San Benito	3 hr
Dec 28, 5:18 AM PST	Dense Fog Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	5 hr
Dec 28, 6:35 AM PST	Wind Advisory	EKA	Del Norte, Humboldt	24 hr
Dec 28, 9:17 AM PST	Flood Watch	STO		4 days
Dec 28, 9:29 AM PST	Flood Watch	REV	Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more	56 hr
Dec 28, 9:35 AM PST	Flood Watch	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	4 days
Dec 28, 11:40 AM PST	Winter Storm Watch	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	27 hr
Dec 28, 11:41 AM PST	Winter Storm Watch	HNX	Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne	24 hr
Dec 28, 12:56 PM PST	Flood Watch	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	3 days
Dec 28, 1:42 PM PST	Winter Storm Watch	VEF	Inyo	24 hr
Dec 28, 2:00 PM PST	Flood Watch	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more	3 days
Dec 29, 3:00 AM PST	Small Craft Advisory	MTR		4 days
Dec 29, 7:26 AM PST	Small Craft Advisory	EKA		3 days
Dec 29, 11:51 AM PST	Winter Storm Warning	HNX	Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne	64 hr
Dec 29, 1:06 PM PST	Winter Weather Advisory	STO		63 hr
Dec 29, 1:58 PM PST	Winter Storm Warning	VEF	Inyo	62 hr
Dec 29, 2:05 PM PST	River Flood Watch	EKA	Humboldt	19 hr
Dec 29, 2:07 PM PST	River Flood Watch	EKA	Mendocino	26 hr
Dec 29, 2:12 PM PST	Wind Advisory	EKA	Humboldt, Lake, Mendocino, Trinity	29 hr
Dec 29, 2:17 PM PST	Winter Storm Warning	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	68 hr
Dec 30, 12:06 AM PST	Small Craft Advisory	EKA		68 hr
Dec 30, 2:06 AM PST	High Wind Watch	SGX	San Bernardino	19 hr
Dec 30, 2:41 AM PST	High Wind Watch	LOX	San Luis Obispo, Santa Barbara	11 hr
Dec 30, 2:50 AM PST	Gale Watch	MTR		23 hr
Dec 30, 2:59 AM PST	Gale Warning	EKA		14 hr
Dec 30, 3:01 AM PST	Wind Advisory	VEF	Inyo, San Bernardino	61 hr
Dec 30, 4:48 AM PST	Dense Fog Advisory	PSR	Imperial	4 hr
Dec 30, 9:11 AM PST	Flood Watch	MFR	Modoc	24 hr
Dec 30, 9:13 AM PST	Areal Flood Advisory	EKA	Humboldt	16 hr
Dec 30, 9:21 AM PST	Areal Flood Advisory	EKA	Del Norte, Humboldt, Trinity	15 hr
Dec 30, 9:29 AM PST	River Flood Warning	EKA	Humboldt	47 hr
Dec 30, 10:22 AM PST	River Flood Warning	REV	Lassen	52 hr
Dec 30, 10:22 AM PST	River Flood Warning	REV	Alpine	36 hr
Dec 30, 10:33 AM PST	River Flood Advisory	REV	Nevada, Placer	12 hr
Dec 30, 10:33 AM PST	River Flood Advisory	REV	Alpine	45 hr
Dec 30, 10:33 AM PST	River Flood Advisory	REV	Alpine	48 hr
Dec 30, 12:16 PM PST	Areal Flood Advisory	EKA	Humboldt, Lake, Mendocino, Trinity	12 hr
Dec 30, 12:53 PM PST	Wind Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more	28 hr
Dec 30, 1:11 PM PST	Winter Weather Advisory	VEF	Inyo	39 hr
Dec 30, 1:22 PM PST	High Wind Warning	LOX	San Luis Obispo, Santa Barbara	38 hr
Dec 30, 1:22 PM PST	Wind Advisory	LOX	San Luis Obispo, Santa Barbara	32 hr
Dec 30, 1:46 PM PST	Gale Warning	LOX		54 hr
Dec 30, 1:46 PM PST	Small Craft Advisory	LOX		61 hr
Dec 30, 1:49 PM PST	Wind Advisory	HNX	Kern	10 hr
Dec 30, 2:04 PM PST	Winter Weather Advisory	MFR	Modoc	26 hr
Dec 30, 3:40 PM PST	River Flood Warning	EKA	Mendocino	20 hr
Dec 30, 3:44 PM PST	River Flood Warning	EKA	Humboldt	12 hr
Dec 30, 5:09 PM PST	Areal Flood Advisory	REV	Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more	24 hr
Dec 30, 8:51 PM PST	High Wind Warning	SGX	San Bernardino	28 hr
Dec 30, 9:03 PM PST	River Flood Warning	STO	Amador, El Dorado, Sacramento	37 hr
Dec 30, 9:58 PM PST	River Flood Warning	REV	Nevada, Placer	34 hr
Dec 30, 10:16 PM PST	Areal Flood Advisory	STO	Amador, Calaveras, El Dorado, Nevada, Placer	6 hr
Dec 30, 10:57 PM PST	River Flood Warning	EKA	Mendocino	2 hr
Dec 31, 12:10 AM PST	Wind Advisory	HNX	Fresno, Kern, Kings, Merced	24 hr
Dec 31, 12:14 AM PST	Dense Fog Advisory	PSR	Imperial, Riverside	10 hr
Dec 31, 12:33 AM PST	Areal Flood Warning	MTR	Sonoma	14 hr
Dec 31, 2:06 AM PST	Gale Warning	MTR		43 hr
Dec 31, 2:27 AM PST	Areal Flood Advisory	MTR	Marin	13 hr
Dec 31, 4:17 AM PST	Areal Flood Advisory	MTR	Napa	6 hr
Dec 31, 4:30 AM PST	Areal Flood Advisory	STO	Amador, Butte, Calaveras, Colusa, El Dorado, Nevada and 10 more	7 hr
Dec 31, 5:20 AM PST	Areal Flood Advisory	MTR	City and County of San Francisco, San Mateo	7 hr
Dec 31, 5:31 AM PST	Areal Flood Advisory	MTR	Alameda, Contra Costa	9 hr
Dec 31, 6:19 AM PST	Areal Flood Advisory	MTR	Santa Cruz	6 hr
Dec 31, 6:52 AM PST	Areal Flood Warning	MTR	San Mateo	6 hr
Dec 31, 6:58 AM PST	Areal Flood Advisory	MTR	Santa Clara	6 hr
Dec 31, 7:35 AM PST	Areal Flood Advisory	STO	Calaveras, San Joaquin, Stanislaus, Tuolumne	14 hr
Dec 31, 8:20 AM PST	Areal Flood Advisory	EKA	Lake, Mendocino	7 hr
Dec 31, 8:53 AM PST	Areal Flood Warning	MTR	San Mateo, Santa Clara	6 hr
Dec 31, 9:00 AM PST	Areal Flood Warning	MTR	Alameda	11 hr
Dec 31, 9:41 AM PST	Mesoscale Discussion	SPC	Alpine, Sierra	6 hr
Dec 31, 9:47 AM PST	Areal Flood Warning	MTR	Santa Cruz	10 hr
Dec 31, 10:15 AM PST	Areal Flood Advisory	HNX	Madera, Mariposa	15 hr
Dec 31, 10:32 AM PST	Areal Flood Warning	MTR	Alameda	19 hr
Dec 31, 11:07 AM PST	Areal Flood Advisory	HNX	Fresno, Madera, Mariposa, Merced	5 hr
Dec 31, 11:50 AM PST	Areal Flood Advisory	HNX	Fresno, Madera, Tulare	14 hr
Dec 31, 11:51 AM PST	Areal Flood Warning	STO	Amador, Calaveras, El Dorado, Nevada, Placer, Sacramento and 7 more	10 hr
Dec 31, 12:35 PM PST	Areal Flood Advisory	MTR	Monterey, San Benito	6 hr
Dec 31, 1:35 PM PST	Areal Flood Advisory	MTR	City and County of San Francisco, San Mateo, Santa Clara, Santa Cruz	3 hr
Dec 31, 2:38 PM PST	Areal Flood Advisory	MTR	Alameda, Contra Costa	5 hr
Dec 31, 2:55 PM PST	Areal Flood Warning	MTR	Sonoma	3 hr
Dec 31, 3:09 PM PST	Areal Flood Advisory	LOX	San Luis Obispo	4 hr

By product

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

Product	Alerts
Severe storms
Mesoscale Discussion	3
Special Weather Statement	25
Flooding
Areal Flood Warning	9
Flash Flood Warning	5
River Flood Warning	8
Flash Flood Watch	3
Flood Watch	10
River Flood Watch	2
Areal Flood Advisory	63
River Flood Advisory	3
Winter
Winter Storm Warning	21
Winter Storm Watch	21
Winter Weather Advisory	23
Cold
Freeze Warning	14
Freeze Watch	8
Frost Advisory	11
Wind and dust
High Wind Warning	9
High Wind Watch	9
Lake Wind Advisory	1
Wind Advisory	34
Fog and smoke
Air Stagnation Advisory	1
Dense Fog Advisory	40
Freezing Fog Advisory	2
Coast and beach
Coastal Flood Advisory	6
High Surf Advisory	5
Beach Hazards Statement	5
Marine
Gale Warning	13
Hazardous Seas Warning	3
Special Marine Warning	13
Storm Warning	2
Gale Watch	6
Storm Watch	2
Marine Dense Fog Advisory	2
Small Craft Advisory	38

By county

Every county with at least one alert. A county page lists each alert that covered it.

16 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2021 2023

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.