Weather alerts in California, May 2020

230 weather alerts in May 2020, 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 2020. Tap one for its archive.

Alerts: 230
Warnings: 32
Watches: 26
Advisories: 107
Busiest day: May 18, 202024 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
May 1, 3:08 AM PDT	Small Craft Advisory	MTR		20 hr
May 1, 8:38 AM PDT	Wind Advisory	LOX		24 hr
May 2, 2:27 AM PDT	Small Craft Advisory	MTR		6 days
May 2, 2:46 AM PDT	Gale Watch	LOX		18 hr
May 2, 9:15 AM PDT	Gale Warning	LOX		36 hr
May 2, 1:20 PM PDT	Frost Advisory	EKA	Lake, Mendocino, Trinity	20 hr
May 2, 2:06 PM PDT	Wind Advisory	LOX		16 hr
May 2, 2:14 PM PDT	Wind Advisory	HNX		39 hr
May 2, 3:54 PM PDT	Wind Advisory	MFR	Modoc, Siskiyou	7 hr
May 2, 4:25 PM PDT	Special Weather Statement	STO	Shasta	65 min
May 2, 5:34 PM PDT	Special Weather Statement	STO	Shasta	56 min
May 2, 6:43 PM PDT	Special Weather Statement	STO	Shasta	32 min
May 2, 8:42 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	23 hr
May 3, 1:22 PM PDT	Excessive Heat Watch	SGX	Riverside, San Diego	24 hr
May 3, 1:22 PM PDT	Heat Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	5 days
May 3, 1:42 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	19 hr
May 3, 1:51 PM PDT	Frost Advisory	MFR	Siskiyou	19 hr
May 3, 2:01 PM PDT	Wind Advisory	LOX		16 hr
May 3, 8:54 PM PDT	Gale Watch	LOX		17 hr
May 3, 8:54 PM PDT	Small Craft Advisory	LOX		54 hr
May 4, 2:14 AM PDT	Excessive Heat Watch	VEF	Inyo, San Bernardino	72 hr
May 4, 2:43 AM PDT	Gale Warning	LOX		3 days
May 4, 3:17 AM PDT	Small Craft Advisory	MTR		18 hr
May 4, 1:20 PM PDT	Excessive Heat Warning	SGX	Riverside, San Diego	4 days
May 4, 1:55 PM PDT	Excessive Heat Watch	PSR	Imperial, Riverside	13 hr
May 4, 2:07 PM PDT	Small Craft Advisory	EKA		5 days
May 4, 2:29 PM PDT	Small Craft Advisory	MTR		7 hr
May 4, 2:45 PM PDT	High Wind Watch	LOX		19 hr
May 4, 2:45 PM PDT	Wind Advisory	LOX		13 hr
May 4, 9:11 PM PDT	Gale Warning	LOX		54 hr
May 5, 1:27 AM PDT	Wind Advisory	HNX		28 hr
May 5, 2:36 AM PDT	Excessive Heat Warning	PSR	Imperial, Riverside	65 hr
May 5, 3:17 AM PDT	Small Craft Advisory	MTR		66 hr
May 5, 9:19 AM PDT	Wind Advisory	LOX		24 hr
May 5, 2:05 PM PDT	Heat Advisory	LOX	Los Angeles	55 hr
May 6, 12:45 AM PDT	High Wind Warning	LOX		8 hr
May 6, 2:51 AM PDT	Small Craft Advisory	LOX		48 hr
May 6, 2:27 PM PDT	Wind Advisory	LOX		16 hr
May 6, 5:59 PM PDT	Frost Advisory	MFR	Siskiyou	15 hr
May 7, 2:10 AM PDT	Excessive Heat Warning	VEF	Inyo	66 hr
May 8, 2:10 PM PDT	Small Craft Advisory	MTR		31 hr
May 9, 2:29 AM PDT	Small Craft Advisory	MTR		19 hr
May 9, 2:46 AM PDT	Dense Fog Advisory	LOX		6 hr
May 9, 2:43 PM PDT	Small Craft Advisory	MTR		25 hr
May 9, 3:04 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	3 days
May 9, 3:04 PM PDT	Wind Advisory	REV	Lassen, Modoc, Plumas, Sierra	53 hr
May 9, 3:49 PM PDT	Gale Watch	EKA		24 hr
May 9, 7:45 PM PDT	Beach Hazards Statement	LOX	Los Angeles	63 hr
May 10, 1:48 AM PDT	Beach Hazards Statement	SGX	Orange	66 hr
May 10, 2:58 AM PDT	Small Craft Advisory	EKA		54 hr
May 10, 2:58 AM PDT	Small Craft Advisory	MTR		45 hr
May 10, 3:27 AM PDT	Wind Advisory	MFR	Modoc, Siskiyou	45 hr
May 10, 3:28 PM PDT	Gale Warning	EKA		29 hr
May 10, 4:06 PM PDT	Severe Thunderstorm Warning	VEF	San Bernardino	39 min
May 11, 2:56 AM PDT	Wind Advisory	VEF		41 hr
May 11, 1:02 PM PDT	Blowing Dust Advisory	MFR	Modoc, Siskiyou	7 hr
May 11, 1:28 PM PDT	Wind Advisory	PSR	Imperial	43 hr
May 11, 1:28 PM PDT	Wind Advisory	SGX	Riverside, San Bernardino, San Diego	40 hr
May 11, 1:34 PM PDT	Wind Advisory	VEF	Inyo, San Bernardino	39 hr
May 11, 1:55 PM PDT	Wind Advisory	HNX		21 hr
May 11, 9:01 PM PDT	Wind Advisory	HNX		6 hr
May 12, 2:55 AM PDT	Small Craft Advisory	LOX		5 days
May 12, 10:59 AM PDT	High Wind Warning	HNX		18 hr
May 12, 12:33 PM PDT	Special Weather Statement	STO	Shasta	3 hr
May 12, 1:35 PM PDT	Small Craft Advisory	SGX		3 days
May 12, 2:43 PM PDT	Small Craft Advisory	EKA		24 hr
May 12, 2:50 PM PDT	Gale Watch	LOX		18 hr
May 12, 2:50 PM PDT	Small Craft Advisory	LOX		4 days
May 13, 9:11 AM PDT	Gale Warning	LOX		71 hr
May 13, 11:07 AM PDT	Wind Advisory	LOX	Los Angeles	69 hr
May 13, 2:33 PM PDT	Small Craft Advisory	MTR		3 days
May 14, 9:52 AM PDT	Wind Advisory	HNX		20 hr
May 14, 1:45 PM PDT	Fire Weather Watch	VEF	Inyo	37 hr
May 15, 6:58 AM PDT	Wind Advisory	REV	Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more	61 hr
May 15, 8:09 AM PDT	Wind Advisory	LOX	Los Angeles	20 hr
May 15, 12:25 PM PDT	Winter Storm Watch	STO		39 hr
May 15, 1:04 PM PDT	Winter Storm Watch	HNX		24 hr
May 15, 1:41 PM PDT	Fire Weather Watch	REV	Madera, Mono	21 hr
May 15, 2:14 PM PDT	Small Craft Advisory	EKA		59 hr
May 15, 9:06 PM PDT	Wind Advisory	MFR	Siskiyou	24 hr
May 16, 2:33 AM PDT	Small Craft Advisory	MTR		35 hr
May 16, 2:41 AM PDT	Red Flag Warning	VEF	Inyo, Tulare	65 hr
May 16, 2:41 AM PDT	High Wind Watch	VEF	Inyo	11 hr
May 16, 2:41 AM PDT	Wind Advisory	VEF	Inyo, San Bernardino	3 days
May 16, 9:15 AM PDT	Wind Advisory	HNX		16 hr
May 16, 10:34 AM PDT	Red Flag Warning	REV	Madera, Mono	32 hr
May 16, 12:00 PM PDT	Wind Advisory	LOX		15 hr
May 16, 1:07 PM PDT	Winter Storm Warning	HNX		64 hr
May 16, 1:07 PM PDT	Winter Weather Advisory	HNX		64 hr
May 16, 1:53 PM PDT	Wind Advisory	MFR	Modoc, Siskiyou	30 hr
May 16, 2:08 PM PDT	Wind Advisory	STO		29 hr
May 17, 3:40 AM PDT	Winter Storm Warning	STO		46 hr
May 17, 10:59 AM PDT	Winter Weather Advisory	REV	Alpine, El Dorado, Nevada, Placer	23 hr
May 17, 12:09 PM PDT	Special Weather Statement	STO	Shasta	51 min
May 17, 12:41 PM PDT	Wind Advisory	SGX	Riverside, San Bernardino, San Diego	44 hr
May 17, 12:54 PM PDT	Wind Advisory	HNX		38 hr
May 17, 1:26 PM PDT	Wind Advisory	PSR	Imperial	44 hr
May 17, 1:29 PM PDT	Flash Flood Watch	STO		32 hr
May 17, 1:42 PM PDT	Special Weather Statement	STO	Shasta	48 min
May 17, 4:56 PM PDT	Special Weather Statement	STO	Amador, El Dorado	64 min
May 17, 5:59 PM PDT	Special Weather Statement	STO	El Dorado	61 min
May 17, 9:07 PM PDT	Small Craft Advisory	LOX		4 days
May 18, 2:05 AM PDT	Small Craft Advisory	SGX		44 hr
May 18, 2:44 AM PDT	Small Craft Advisory	MTR		7 days
May 18, 9:42 AM PDT	Special Weather Statement	HNX	Madera	48 min
May 18, 12:26 PM PDT	Special Weather Statement	STO	Amador, Calaveras, San Joaquin	49 min
May 18, 12:42 PM PDT	Special Weather Statement	HNX	Fresno	48 min
May 18, 12:46 PM PDT	Special Weather Statement	STO	Tehama	44 min
May 18, 1:11 PM PDT	Special Weather Statement	STO	Amador, Calaveras	64 min
May 18, 1:23 PM PDT	Special Weather Statement	STO	Yuba	52 min
May 18, 1:29 PM PDT	Special Weather Statement	STO	Tehama	61 min
May 18, 1:33 PM PDT	Special Weather Statement	HNX	Fresno	42 min
May 18, 1:47 PM PDT	Wind Advisory	PSR	Imperial	33 hr
May 18, 2:11 PM PDT	Special Weather Statement	STO	Placer	64 min
May 18, 2:36 PM PDT	Special Weather Statement	STO	Tehama	54 min
May 18, 2:41 PM PDT	Small Craft Advisory	EKA		4 days
May 18, 2:46 PM PDT	Special Weather Statement	STO	Tuolumne	59 min
May 18, 3:12 PM PDT	Special Weather Statement	STO	Placer	63 min
May 18, 3:48 PM PDT	Special Weather Statement	HNX		27 min
May 18, 4:01 PM PDT	Special Weather Statement	HNX	Merced	29 min
May 18, 4:12 PM PDT	Special Weather Statement	STO	Tehama	48 min
May 18, 4:13 PM PDT	Special Weather Statement	HNX	Fresno	47 min
May 18, 4:24 PM PDT	Special Weather Statement	STO	Sutter, Yolo	66 min
May 18, 4:33 PM PDT	Special Weather Statement	HNX	Kings	27 min
May 18, 5:02 PM PDT	Special Weather Statement	HNX	Fresno	43 min
May 18, 5:13 PM PDT	Special Weather Statement	STO	Butte, Sutter	62 min
May 18, 5:17 PM PDT	Areal Flood Advisory	HNX	Fresno, Kings	118 min
May 18, 5:32 PM PDT	Special Weather Statement	STO	Sacramento	58 min
May 18, 5:54 PM PDT	Special Weather Statement	HNX	Merced	51 min
May 18, 6:32 PM PDT	Special Weather Statement	HNX	Kings	28 min
May 18, 6:43 PM PDT	Special Weather Statement	HNX	Fresno	32 min
May 18, 6:59 PM PDT	Special Weather Statement	HNX	Merced	31 min
May 18, 7:10 PM PDT	Special Weather Statement	HNX	Tulare	50 min
May 18, 7:14 PM PDT	Special Weather Statement	HNX	Fresno	31 min
May 18, 7:29 PM PDT	Special Weather Statement	HNX	Mariposa	31 min
May 18, 7:39 PM PDT	Special Weather Statement	HNX	Tulare	36 min
May 18, 7:41 PM PDT	Special Weather Statement	STO	Placer	49 min
May 19, 1:57 AM PDT	Winter Weather Advisory	STO		15 hr
May 19, 10:31 AM PDT	Wind Advisory	VEF	San Bernardino	8 hr
May 19, 2:22 PM PDT	Small Craft Advisory	MTR		5 days
May 19, 3:36 PM PDT	Areal Flood Advisory	HNX	Fresno	99 min
May 19, 8:30 PM PDT	Gale Watch	LOX		18 hr
May 19, 10:53 PM PDT	Special Weather Statement	STO	Tehama	37 min
May 19, 11:33 PM PDT	Special Weather Statement	STO	Glenn	57 min
May 20, 2:56 AM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	41 hr
May 20, 2:17 PM PDT	Gale Warning	LOX		60 hr
May 20, 2:32 PM PDT	Small Craft Advisory	MTR		36 hr
May 21, 2:00 AM PDT	Gale Watch	LOX		25 hr
May 21, 2:34 AM PDT	Small Craft Advisory	EKA		35 hr
May 21, 3:17 AM PDT	Wind Advisory	VEF	San Bernardino	41 hr
May 21, 12:25 PM PDT	Wind Advisory	HNX		35 hr
May 21, 12:59 PM PDT	Red Flag Warning	VEF	Inyo, San Bernardino	31 hr
May 21, 1:34 PM PDT	Excessive Heat Watch	SGX	Riverside, San Bernardino, San Diego	61 hr
May 21, 1:56 PM PDT	Wind Advisory	PSR	Imperial	42 hr
May 21, 2:37 PM PDT	Gale Warning	MTR		30 hr
May 22, 2:58 AM PDT	Gale Warning	EKA		23 hr
May 22, 3:07 AM PDT	Small Craft Advisory	LOX		72 hr
May 22, 3:17 AM PDT	Wind Advisory	LOX		23 hr
May 22, 3:32 AM PDT	Excessive Heat Watch	PSR	Imperial, Riverside, San Bernardino	47 hr
May 22, 3:54 AM PDT	Small Craft Advisory	MTR		17 hr
May 22, 12:43 PM PDT	Excessive Heat Watch	HNX		48 hr
May 22, 1:08 PM PDT	Excessive Heat Watch	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more	47 hr
May 22, 1:49 PM PDT	Excessive Heat Watch	VEF	Inyo, San Bernardino	37 hr
May 22, 2:04 PM PDT	Excessive Heat Watch	STO		45 hr
May 22, 9:27 PM PDT	Small Craft Advisory	MTR		5 days
May 23, 2:18 AM PDT	Small Craft Advisory	EKA		8 days
May 23, 4:56 AM PDT	Excessive Heat Watch	LOX		24 hr
May 23, 10:23 PM PDT	Small Craft Advisory	MTR		37 min
May 24, 2:32 AM PDT	Small Craft Advisory	MTR		18 hr
May 24, 2:32 AM PDT	Small Craft Advisory	MTR		4 days
May 24, 2:32 AM PDT	Excessive Heat Warning	VEF	Inyo, San Bernardino	6 days
May 24, 2:40 AM PDT	Small Craft Advisory	LOX		18 hr
May 24, 2:54 AM PDT	Excessive Heat Warning	SGX	Riverside, San Bernardino, San Diego	6 days
May 24, 2:55 AM PDT	Excessive Heat Warning	PSR	Imperial, Riverside, San Bernardino	8 days
May 24, 4:39 AM PDT	Excessive Heat Warning	LOX		5 days
May 24, 10:54 AM PDT	Excessive Heat Warning	STO		4 days
May 24, 12:06 PM PDT	Heat Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more	4 days
May 24, 12:33 PM PDT	Excessive Heat Warning	HNX		4 days
May 24, 1:16 PM PDT	Heat Advisory	EKA	Lake, Mendocino, Trinity	4 days
May 24, 2:24 PM PDT	Heat Advisory	LOX		4 days
May 26, 2:51 AM PDT	Small Craft Advisory	EKA		5 days
May 26, 4:44 PM PDT	Special Weather Statement	REV	Mono	46 min
May 26, 4:46 PM PDT	Special Weather Statement	REV	Mono	44 min
May 26, 5:29 PM PDT	Special Weather Statement	REV	Mono	46 min
May 26, 6:11 PM PDT	Special Weather Statement	REV	Mono	34 min
May 27, 3:03 AM PDT	Small Craft Advisory	MTR		24 hr
May 28, 3:12 AM PDT	Small Craft Advisory	MTR		59 hr
May 28, 11:29 AM PDT	Wind Advisory	MFR	Modoc	57 hr
May 28, 11:30 AM PDT	Fire Weather Watch	REV	Madera, Mono	27 hr
May 28, 1:05 PM PDT	Red Flag Warning	VEF	Inyo, Tulare	55 hr
May 28, 7:08 PM PDT	Wind Advisory	HNX		36 hr
May 28, 8:35 PM PDT	Special Weather Statement	MFR	Siskiyou	25 min
May 28, 8:43 PM PDT	Severe Thunderstorm Warning	MFR	Siskiyou	32 min
May 28, 9:12 PM PDT	Severe Thunderstorm Warning	MFR	Siskiyou	33 min
May 28, 9:46 PM PDT	Severe Thunderstorm Warning	MFR	Siskiyou	29 min
May 29, 1:59 AM PDT	Beach Hazards Statement	LOX	Los Angeles	72 hr
May 29, 2:04 AM PDT	Beach Hazards Statement	SGX	Orange	60 hr
May 29, 2:36 AM PDT	Wind Advisory	SGX	San Bernardino	17 hr
May 29, 3:08 AM PDT	Wind Advisory	LOX		17 hr
May 29, 3:18 AM PDT	Wind Advisory	PSR	Imperial	29 hr
May 29, 3:33 AM PDT	Wind Advisory	VEF	Inyo	40 hr
May 29, 8:50 AM PDT	Gale Warning	MTR		12 hr
May 29, 9:56 AM PDT	Small Craft Advisory	LOX		23 hr
May 29, 10:43 AM PDT	Flash Flood Watch	STO		33 hr
May 29, 11:19 AM PDT	Flash Flood Watch	EKA	Humboldt, Mendocino, Trinity	28 hr
May 29, 2:02 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Mono, Nevada, Placer	30 hr
May 29, 2:07 PM PDT	Red Flag Warning	REV	Madera, Mono	30 hr
May 29, 5:00 PM PDT	Special Weather Statement	REV	Alpine	45 min
May 29, 5:40 PM PDT	Severe Thunderstorm Warning	REV	Alpine, El Dorado	35 min
May 30, 12:45 AM PDT	Special Weather Statement	EKA	Del Norte, Humboldt	45 min
May 30, 1:30 AM PDT	Special Weather Statement	EKA	Del Norte, Humboldt	45 min
May 30, 2:11 AM PDT	Special Weather Statement	EKA	Humboldt	34 min
May 30, 2:37 AM PDT	Small Craft Advisory	MTR		18 hr
May 30, 5:12 AM PDT	Special Weather Statement	STO	Butte, Glenn, Tehama, Yuba	33 min
May 30, 5:51 AM PDT	Special Weather Statement	STO	Butte, Glenn, Placer, Tehama, Yuba	54 min
May 30, 7:02 AM PDT	Special Weather Statement	STO	Butte, Tehama	43 min
May 30, 8:10 AM PDT	Special Weather Statement	STO	Shasta	50 min
May 30, 9:02 AM PDT	Special Weather Statement	STO	Shasta	43 min
May 30, 10:50 AM PDT	Special Weather Statement	MFR	Siskiyou	40 min
May 30, 2:13 PM PDT	Special Weather Statement	MTR	Alameda, Contra Costa	62 min
May 30, 2:39 PM PDT	Areal Flood Advisory	MTR	Alameda, Contra Costa, Santa Clara	79 min
May 30, 3:08 PM PDT	Special Weather Statement	MTR	Alameda, Contra Costa	52 min
May 30, 3:29 PM PDT	Special Weather Statement	STO	San Joaquin	61 min
May 30, 3:47 PM PDT	Special Weather Statement	MTR	Napa	43 min
May 30, 4:03 PM PDT	Areal Flood Advisory	STO	San Joaquin	3 hr
May 30, 4:20 PM PDT	Special Weather Statement	STO	Placer	55 min
May 30, 4:33 PM PDT	Special Weather Statement	STO	Amador	57 min
May 30, 8:33 PM PDT	Small Craft Advisory	EKA		6 days
May 30, 8:53 PM PDT	Small Craft Advisory	LOX		30 hr
May 31, 2:22 AM PDT	Small Craft Advisory	MTR		6 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
Severe Thunderstorm Warning	5
Special Weather Statement	61
Flooding
Flash Flood Watch	3
Areal Flood Advisory	4
Winter
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	3
Heat
Excessive Heat Warning	9
Excessive Heat Watch	10
Heat Advisory	5
Cold
Frost Advisory	4
Wind and dust
High Wind Warning	2
High Wind Watch	2
Blowing Dust Advisory	1
Lake Wind Advisory	4
Wind Advisory	42
Fire
Red Flag Warning	5
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	1
Coast and beach
Beach Hazards Statement	4
Marine
Gale Warning	9
Gale Watch	6
Small Craft Advisory	43

By county

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

11 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2019 2021

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.