Weather alerts in California, May 2021

218 weather alerts in May 2021, 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 May 2021. Tap one for its archive.

Alerts: 218
Warnings: 51
Watches: 24
Advisories: 115
Busiest day: May 18, 202125 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
Apr 30, 8:07 PM PDT	Wind Advisory	LOX	Los Angeles	55 hr
May 1, 2:26 AM PDT	Wind Advisory	PSR	Imperial	45 hr
May 1, 2:48 AM PDT	Hazardous Seas Warning	EKA		12 hr
May 1, 3:56 AM PDT	Small Craft Advisory	LOX		23 hr
May 1, 1:59 PM PDT	Red Flag Warning	STO		3 days
May 1, 5:55 PM PDT	Special Weather Statement	REV	Lassen	50 min
May 2, 3:15 AM PDT	Small Craft Advisory	LOX		72 hr
May 2, 2:00 PM PDT	Small Craft Advisory	MTR		67 hr
May 2, 2:11 PM PDT	Gale Warning	EKA		31 hr
May 2, 9:05 PM PDT	Wind Advisory	LOX		11 hr
May 2, 9:08 PM PDT	Small Craft Advisory	MTR		54 hr
May 3, 2:43 AM PDT	Gale Warning	MTR		18 hr
May 3, 2:50 AM PDT	Small Craft Advisory	LOX		11 hr
May 3, 6:22 PM PDT	Gale Warning	LOX		7 hr
May 3, 8:56 PM PDT	Small Craft Advisory	EKA		36 hr
May 5, 2:42 AM PDT	Small Craft Advisory	MTR		6 days
May 5, 1:48 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	31 hr
May 5, 2:08 PM PDT	Small Craft Advisory	LOX		61 hr
May 5, 2:26 PM PDT	Gale Watch	EKA		13 hr
May 5, 2:47 PM PDT	Gale Warning	MTR		5 days
May 5, 2:47 PM PDT	Small Craft Advisory	MTR		6 hr
May 5, 8:28 PM PDT	Gale Watch	LOX		24 hr
May 6, 2:49 AM PDT	Small Craft Advisory	MTR		5 days
May 6, 3:00 AM PDT	Gale Warning	EKA		5 days
May 6, 3:00 AM PDT	Hazardous Seas Warning	EKA		54 hr
May 6, 3:11 AM PDT	Frost Advisory	EKA	Humboldt, Mendocino, Trinity	29 hr
May 6, 8:44 AM PDT	Small Craft Advisory	EKA		33 hr
May 6, 1:12 PM PDT	Wind Advisory	SGX	Riverside, San Diego	42 hr
May 6, 2:06 PM PDT	Gale Warning	LOX		37 hr
May 6, 2:57 PM PDT	Fire Weather Watch	STO		21 hr
May 7, 2:15 AM PDT	Wind Advisory	HNX		26 hr
May 7, 5:22 AM PDT	Wind Advisory	LOX		25 hr
May 7, 9:54 AM PDT	Red Flag Warning	MTR	Alameda, Contra Costa	4 days
May 7, 12:14 PM PDT	Red Flag Warning	STO		4 days
May 7, 1:28 PM PDT	Wind Advisory	STO		29 hr
May 7, 2:03 PM PDT	Frost Advisory	EKA	Humboldt, Mendocino, Trinity	19 hr
May 7, 2:51 PM PDT	Small Craft Advisory	MTR		30 hr
May 8, 2:56 AM PDT	Gale Watch	EKA		25 hr
May 8, 3:02 AM PDT	Gale Warning	LOX		2 hr
May 8, 3:02 AM PDT	Small Craft Advisory	LOX		36 hr
May 8, 3:35 AM PDT	Small Craft Advisory	MTR		41 hr
May 8, 5:07 AM PDT	Gale Watch	LOX		21 hr
May 8, 8:56 AM PDT	Small Craft Advisory	EKA		29 hr
May 8, 12:50 PM PDT	Wind Advisory	HNX		36 hr
May 8, 8:54 PM PDT	Gale Warning	MTR		30 hr
May 8, 10:25 PM PDT	Small Craft Advisory	LOX		23 hr
May 9, 2:07 AM PDT	Gale Warning	LOX		24 hr
May 9, 2:07 AM PDT	Small Craft Advisory	LOX		24 hr
May 9, 3:41 AM PDT	Gale Warning	EKA		70 hr
May 10, 2:04 AM PDT	Small Craft Advisory	LOX		7 hr
May 10, 8:48 AM PDT	Small Craft Advisory	MTR		30 hr
May 10, 9:09 AM PDT	Small Craft Advisory	LOX		6 hr
May 10, 11:27 AM PDT	Small Craft Advisory	EKA		7 days
May 10, 11:27 AM PDT	Hazardous Seas Warning	EKA		17 hr
May 11, 2:34 AM PDT	Hazardous Seas Warning	EKA		24 hr
May 11, 2:49 AM PDT	Small Craft Advisory	MTR		18 hr
May 12, 2:12 AM PDT	Hazardous Seas Warning	EKA		7 hr
May 12, 2:47 AM PDT	Small Craft Advisory	MTR		24 hr
May 12, 2:25 PM PDT	Gale Watch	EKA		36 hr
May 12, 2:38 PM PDT	Small Craft Advisory	MTR		66 hr
May 13, 2:45 AM PDT	Small Craft Advisory	MTR		4 days
May 13, 2:22 PM PDT	Gale Warning	EKA		60 hr
May 13, 2:22 PM PDT	Small Craft Advisory	EKA		31 hr
May 13, 2:22 PM PDT	Red Flag Warning	MFR	Modoc, Siskiyou	30 hr
May 14, 2:06 AM PDT	Small Craft Advisory	LOX		25 hr
May 14, 1:21 PM PDT	Gale Warning	MTR		20 hr
May 14, 2:46 PM PDT	Hazardous Seas Warning	EKA		36 hr
May 14, 7:48 PM PDT	Areal Flood Advisory	STO	Shasta, Tehama	3 hr
May 15, 1:30 AM PDT	Wind Advisory	PSR	Imperial, Riverside	55 hr
May 15, 1:57 AM PDT	Wind Advisory	SGX	Riverside, San Bernardino, San Diego	54 hr
May 15, 3:01 AM PDT	Small Craft Advisory	MTR		42 hr
May 15, 4:32 AM PDT	Wind Advisory	LOX		16 hr
May 15, 4:39 AM PDT	Special Weather Statement	STO	Shasta	81 min
May 15, 2:47 PM PDT	Special Weather Statement	STO	Shasta	43 min
May 15, 3:33 PM PDT	Special Weather Statement	EKA	Lake	27 min
May 15, 3:59 PM PDT	Special Weather Statement	EKA	Lake	31 min
May 15, 6:24 PM PDT	Wind Advisory	VEF		4 hr
May 15, 6:36 PM PDT	Special Weather Statement	STO	Tehama	39 min
May 15, 6:52 PM PDT	Special Weather Statement	STO	Shasta	53 min
May 15, 7:42 PM PDT	Special Weather Statement	STO	Tehama	48 min
May 16, 2:32 AM PDT	Small Craft Advisory	EKA		5 days
May 16, 2:32 AM PDT	Hazardous Seas Warning	EKA		9 hr
May 16, 3:02 AM PDT	Small Craft Advisory	MTR		3 days
May 16, 12:29 PM PDT	Special Weather Statement	HNX		46 min
May 16, 2:19 PM PDT	Small Craft Advisory	LOX		37 hr
May 16, 2:59 PM PDT	Special Weather Statement	HNX		46 min
May 16, 3:19 PM PDT	Special Weather Statement	STO	Alpine	41 min
May 16, 3:23 PM PDT	Special Weather Statement	STO	Placer	37 min
May 16, 4:01 PM PDT	Special Weather Statement	STO	Alpine	44 min
May 16, 4:18 PM PDT	Special Weather Statement	HNX	Tulare	27 min
May 16, 5:01 PM PDT	Special Weather Statement	STO	Nevada	44 min
May 17, 2:51 AM PDT	Gale Watch	LOX		24 hr
May 17, 2:54 AM PDT	Gale Warning	MTR		5 days
May 17, 2:54 AM PDT	Small Craft Advisory	MTR		60 hr
May 17, 1:39 PM PDT	Wind Advisory	HNX		16 hr
May 17, 1:46 PM PDT	Fire Weather Watch	VEF	Inyo, San Bernardino, Tulare	25 hr
May 17, 2:30 PM PDT	Small Craft Advisory	EKA		7 days
May 17, 4:36 PM PDT	Small Craft Advisory	MTR		28 hr
May 17, 5:16 PM PDT	Wind Advisory	LOX		5 hr
May 17, 8:28 PM PDT	Gale Watch	EKA		21 hr
May 18, 2:54 AM PDT	Gale Warning	LOX		4 days
May 18, 2:54 AM PDT	Small Craft Advisory	LOX		3 days
May 18, 2:55 AM PDT	Gale Warning	MTR		3 days
May 18, 2:55 AM PDT	Small Craft Advisory	MTR		36 hr
May 18, 3:43 AM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	29 hr
May 18, 3:50 AM PDT	High Wind Warning	LOX		25 hr
May 18, 3:50 AM PDT	Wind Advisory	LOX		41 hr
May 18, 4:47 AM PDT	Wind Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more	48 hr
May 18, 5:56 AM PDT	Wind Advisory	HNX		5 hr
May 18, 10:50 AM PDT	High Wind Warning	HNX		19 hr
May 18, 12:46 PM PDT	Small Craft Advisory	SGX		4 days
May 18, 1:00 PM PDT	Winter Weather Advisory	MFR	Modoc	43 hr
May 18, 1:29 PM PDT	Wind Advisory	SGX	Riverside, San Bernardino, San Diego	3 days
May 18, 1:38 PM PDT	Wind Advisory	PSR	Imperial, Riverside, San Bernardino	67 hr
May 18, 1:43 PM PDT	Beach Hazards Statement	LOX	Los Angeles	5 days
May 18, 2:04 PM PDT	Winter Weather Advisory	REV	Lassen, Modoc, Plumas, Sierra	44 hr
May 18, 2:12 PM PDT	Gale Watch	LOX		13 hr
May 18, 2:17 PM PDT	Winter Weather Advisory	STO		52 hr
May 18, 2:54 PM PDT	Freeze Watch	REV	Lassen, Modoc, Plumas, Sierra	36 hr
May 18, 2:54 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	30 hr
May 18, 3:09 PM PDT	Fire Weather Watch	VEF	San Bernardino	37 hr
May 18, 3:09 PM PDT	Red Flag Warning	VEF	Inyo, San Bernardino	59 hr
May 18, 3:22 PM PDT	Wind Advisory	VEF	Inyo, San Bernardino	59 hr
May 18, 5:23 PM PDT	Gale Warning	EKA		27 hr
May 19, 2:15 AM PDT	Winter Weather Advisory	STO		44 hr
May 19, 2:47 AM PDT	Red Flag Warning	PSR	Imperial, Riverside	41 hr
May 19, 2:57 AM PDT	Gale Warning	LOX		47 hr
May 19, 4:00 AM PDT	Freeze Watch	EKA	Humboldt, Trinity	11 hr
May 19, 4:12 AM PDT	Wind Advisory	LOX		53 hr
May 19, 6:45 AM PDT	Beach Hazards Statement	SGX	Orange	5 days
May 19, 9:30 AM PDT	High Wind Warning	HNX		44 hr
May 19, 9:30 AM PDT	Wind Advisory	HNX		35 hr
May 19, 12:15 PM PDT	Wind Advisory	EKA	Lake, Mendocino	15 hr
May 19, 2:06 PM PDT	Wind Advisory	LOX		61 hr
May 19, 2:35 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	18 hr
May 19, 8:08 PM PDT	Gale Warning	EKA		24 hr
May 19, 8:08 PM PDT	Small Craft Advisory	EKA		15 hr
May 19, 9:12 PM PDT	Gale Watch	LOX		6 hr
May 19, 9:17 PM PDT	High Wind Warning	LOX		6 hr
May 20, 2:37 AM PDT	Winter Weather Advisory	REV	Alpine, El Dorado, Nevada, Placer	19 hr
May 20, 2:40 AM PDT	Freeze Warning	REV	Lassen, Modoc, Plumas, Sierra	12 hr
May 20, 2:56 AM PDT	Small Craft Advisory	MTR		14 hr
May 20, 3:35 AM PDT	Wind Advisory	EKA	Mendocino	11 hr
May 20, 3:52 AM PDT	Red Flag Warning	VEF	San Bernardino	40 hr
May 20, 11:04 AM PDT	High Wind Warning	VEF	San Bernardino	15 hr
May 20, 11:10 AM PDT	Wind Advisory	MTR	Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma	10 hr
May 20, 2:09 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	19 hr
May 20, 5:02 PM PDT	Small Craft Advisory	MTR		4 hr
May 20, 8:09 PM PDT	Gale Warning	EKA		25 hr
May 20, 8:09 PM PDT	Small Craft Advisory	EKA		15 hr
May 20, 9:35 PM PDT	Small Craft Advisory	MTR		10 days
May 21, 2:14 AM PDT	Wind Advisory	LOX		19 hr
May 21, 2:26 AM PDT	Gale Warning	LOX		19 hr
May 21, 3:14 AM PDT	Wind Advisory	VEF	San Bernardino	17 hr
May 21, 12:48 PM PDT	Wind Advisory	HNX		6 hr
May 21, 2:22 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino, Trinity	19 hr
May 21, 4:00 PM PDT	Special Weather Statement	HNX		45 min
May 21, 4:44 PM PDT	Special Weather Statement	HNX	Kern	31 min
May 21, 4:47 PM PDT	Special Weather Statement	HNX		28 min
May 21, 8:39 PM PDT	Small Craft Advisory	LOX		30 hr
May 21, 8:42 PM PDT	Small Craft Advisory	MTR		24 hr
May 22, 2:02 PM PDT	Small Craft Advisory	MTR		5 days
May 23, 3:20 AM PDT	Small Craft Advisory	LOX		41 hr
May 23, 3:32 AM PDT	Wind Advisory	LOX		23 hr
May 23, 11:07 AM PDT	Beach Hazards Statement	LOX	Los Angeles	10 hr
May 23, 2:04 PM PDT	Small Craft Advisory	MTR		9 days
May 23, 9:18 PM PDT	Gale Watch	LOX		12 hr
May 23, 9:18 PM PDT	Small Craft Advisory	LOX		27 hr
May 24, 2:50 AM PDT	Gale Warning	MTR		42 hr
May 24, 2:50 AM PDT	Small Craft Advisory	MTR		66 hr
May 24, 3:26 AM PDT	Wind Advisory	LOX		24 hr
May 24, 9:03 AM PDT	Gale Warning	LOX		48 hr
May 24, 2:07 PM PDT	Small Craft Advisory	EKA		59 hr
May 25, 3:15 AM PDT	Small Craft Advisory	LOX		23 hr
May 25, 5:21 AM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	13 hr
May 25, 6:15 AM PDT	Wind Advisory	LOX		24 hr
May 26, 2:16 AM PDT	Gale Watch	LOX		18 hr
May 26, 2:16 AM PDT	Small Craft Advisory	LOX		36 hr
May 26, 3:15 AM PDT	Small Craft Advisory	MTR		36 hr
May 26, 2:24 PM PDT	Gale Warning	LOX		36 hr
May 26, 8:21 PM PDT	Small Craft Advisory	LOX		4 days
May 27, 2:08 AM PDT	Small Craft Advisory	EKA		61 hr
May 27, 2:08 AM PDT	Hazardous Seas Watch	EKA		24 hr
May 27, 2:58 AM PDT	Small Craft Advisory	MTR		3 days
May 27, 3:34 AM PDT	Wind Advisory	LOX		20 hr
May 27, 2:17 PM PDT	Excessive Heat Watch	STO		24 hr
May 28, 2:04 AM PDT	Small Craft Advisory	LOX		19 hr
May 28, 2:16 AM PDT	Hazardous Seas Warning	EKA		46 hr
May 28, 3:24 AM PDT	Wind Advisory	LOX		24 hr
May 28, 3:34 AM PDT	Small Craft Advisory	MTR		71 hr
May 28, 12:41 PM PDT	Heat Advisory	MTR	Alameda, Contra Costa, Marin, Napa, Sonoma	3 days
May 28, 1:48 PM PDT	Excessive Heat Warning	STO		6 days
May 28, 2:16 PM PDT	Heat Advisory	EKA	Lake, Mendocino, Trinity	4 days
May 29, 2:17 AM PDT	Small Craft Advisory	LOX		25 hr
May 29, 2:43 AM PDT	Gale Watch	EKA		24 hr
May 29, 2:43 AM PDT	Gale Warning	EKA		24 hr
May 29, 3:07 AM PDT	Excessive Heat Watch	HNX		5 hr
May 29, 3:07 AM PDT	Excessive Heat Watch	MFR	Siskiyou	10 hr
May 29, 3:48 AM PDT	Wind Advisory	LOX		23 hr
May 29, 8:26 AM PDT	Excessive Heat Warning	HNX		3 days
May 29, 8:55 AM PDT	Small Craft Advisory	EKA		4 days
May 29, 1:22 PM PDT	Heat Advisory	MFR	Siskiyou	4 days
May 29, 1:43 PM PDT	Special Weather Statement	HNX		47 min
May 29, 2:58 PM PDT	Special Weather Statement	STO	Tuolumne	62 min
May 29, 3:06 PM PDT	Special Weather Statement	HNX	Mariposa	24 min
May 29, 3:50 PM PDT	Special Weather Statement	HNX	Tuolumne	25 min
May 29, 4:08 PM PDT	Special Weather Statement	HNX		37 min
May 29, 4:32 PM PDT	Special Weather Statement	HNX	Tuolumne	28 min
May 29, 4:36 PM PDT	Special Weather Statement	HNX	Tulare	24 min
May 30, 2:47 AM PDT	Gale Watch	EKA		24 hr
May 30, 2:47 AM PDT	Gale Warning	EKA		24 hr
May 30, 3:02 AM PDT	Excessive Heat Watch	HNX		25 hr
May 30, 8:52 AM PDT	Small Craft Advisory	EKA		8 days
May 30, 11:54 AM PDT	Excessive Heat Watch	VEF	Inyo, San Bernardino	26 hr
May 30, 2:06 PM PDT	Gale Warning	MTR		19 hr
May 31, 3:54 AM PDT	Excessive Heat Warning	HNX		64 hr
May 31, 3:54 AM PDT	Heat Advisory	HNX		64 hr
May 31, 1:32 PM PDT	Excessive Heat Warning	VEF	Inyo, San Bernardino	5 days

By product

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

Product	Alerts
Severe storms
Special Weather Statement	25
Flooding
Areal Flood Advisory	1
Winter
Winter Weather Advisory	5
Heat
Excessive Heat Warning	4
Excessive Heat Watch	5
Heat Advisory	4
Cold
Freeze Warning	1
Freeze Watch	2
Frost Advisory	6
Wind and dust
High Wind Warning	5
Lake Wind Advisory	3
Wind Advisory	35
Fire
Red Flag Warning	7
Fire Weather Watch	3
Coast and beach
Beach Hazards Statement	3
Marine
Gale Warning	26
Hazardous Seas Warning	8
Gale Watch	13
Hazardous Seas Watch	1
Small Craft Advisory	61

Nearby

Alerts in force now Tornadoes on record The radar archive 2020 2022

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.