Weather alerts in California, September 2026

160 weather alerts in September 2026, 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 September 2026. Tap one for its archive.

Alerts: 160
Warnings: 25
Watches: 6
Advisories: 96
Busiest day: September 17, 202617 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
Sep 1, 1:06 AM PDT	Small Craft Advisory	LOX		24 hr
Sep 1, 2:57 AM PDT	Gale Warning	EKA		39 hr
Sep 1, 2:57 AM PDT	Small Craft Advisory	EKA		43 hr
Sep 1, 12:04 PM PDT	Wind Advisory	LOX	Santa Barbara	18 hr
Sep 1, 12:11 PM PDT	Wind Advisory	EKA	Del Norte, Humboldt	32 hr
Sep 1, 5:37 PM PDT	Severe Thunderstorm Warning	PSR	Imperial	38 min
Sep 1, 5:41 PM PDT	Dust Storm Advisory	PSR	Imperial	49 min
Sep 1, 6:20 PM PDT	Areal Flood Advisory	PSR	Imperial	47 min
Sep 1, 7:07 PM PDT	Flash Flood Warning Considerable damage threat	PSR	Imperial	3 hr
Sep 2, 1:15 AM PDT	Small Craft Advisory	LOX		26 hr
Sep 2, 12:35 PM PDT	Wind Advisory	LOX	Santa Barbara	17 hr
Sep 2, 2:03 PM PDT	Small Craft Advisory	LOX		6 hr
Sep 2, 9:26 PM PDT	Beach Hazards Statement	MTR	Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma	5 days
Sep 3, 1:03 AM PDT	Small Craft Advisory	LOX		26 hr
Sep 3, 5:23 AM PDT	Small Craft Advisory	MTR		12 hr
Sep 3, 7:53 AM PDT	Wind Advisory	LOX	Santa Barbara	20 hr
Sep 3, 12:11 PM PDT	Beach Hazards Statement	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	7 days
Sep 3, 12:11 PM PDT	Coastal Flood Advisory	LOX	Los Angeles, Ventura	5 days
Sep 3, 12:11 PM PDT	High Surf Advisory	LOX	Los Angeles, Ventura	5 days
Sep 3, 12:39 PM PDT	Frost Advisory	EKA	Lake, Mendocino, Trinity	17 hr
Sep 3, 1:32 PM PDT	Coastal Flood Advisory	SGX	Orange, San Diego	6 days
Sep 3, 1:32 PM PDT	High Surf Advisory	SGX	Orange, San Diego	5 days
Sep 3, 2:11 PM PDT	Small Craft Advisory	EKA		25 hr
Sep 3, 3:22 PM PDT	Beach Hazards Statement	EKA	Humboldt, Mendocino	4 days
Sep 3, 11:21 PM PDT	Coastal Flood Advisory	MTR	Marin, Napa, Sonoma	22 hr
Sep 4, 2:02 AM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	19 hr
Sep 4, 2:52 AM PDT	Small Craft Advisory	MTR		18 hr
Sep 4, 1:35 PM PDT	Small Craft Advisory	MTR		67 hr
Sep 5, 5:23 AM PDT	Small Craft Advisory	MTR		16 hr
Sep 5, 1:46 PM PDT	Small Craft Advisory	LOX		43 hr
Sep 5, 1:59 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more	33 hr
Sep 5, 8:29 PM PDT	Small Craft Advisory	EKA		4 days
Sep 6, 1:37 AM PDT	Freeze Watch	MFR	Modoc, Siskiyou	8 hr
Sep 6, 10:04 AM PDT	Freeze Warning	MFR	Modoc, Siskiyou	23 hr
Sep 6, 10:06 AM PDT	Areal Flood Advisory	LOX	Los Angeles	3 hr
Sep 6, 10:40 AM PDT	Red Flag Warning	REV	Madera, Mono	9 hr
Sep 6, 1:52 PM PDT	Areal Flood Advisory	LOX	Los Angeles	6 hr
Sep 6, 2:14 PM PDT	Areal Flood Advisory	VEF	San Bernardino	5 hr
Sep 6, 4:07 PM PDT	Areal Flood Advisory	LOX	Los Angeles	3 hr
Sep 6, 4:23 PM PDT	Special Weather Statement	LOX	Los Angeles	37 min
Sep 6, 4:51 PM PDT	Areal Flood Advisory	LOX	Los Angeles	2 hr
Sep 6, 5:02 PM PDT	Areal Flood Advisory	LOX	Los Angeles	118 min
Sep 6, 5:53 PM PDT	Areal Flood Advisory	LOX	Los Angeles	2 hr
Sep 7, 12:33 AM PDT	Extreme Heat Warning	PSR	Imperial, Riverside	5 days
Sep 7, 10:27 AM PDT	Heat Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more	3 days
Sep 7, 10:30 AM PDT	Heat Advisory	STO	Amador, Butte, Calaveras, Colusa, El Dorado, Glenn and 12 more	3 days
Sep 7, 10:57 AM PDT	Heat Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	3 days
Sep 7, 11:06 AM PDT	Frost Advisory	MFR	Modoc	22 hr
Sep 7, 11:09 AM PDT	Heat Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	3 days
Sep 7, 11:09 AM PDT	Extreme Heat Warning	SGX	Orange, Riverside, San Bernardino, San Diego	4 days
Sep 7, 11:55 AM PDT	Heat Advisory	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	44 hr
Sep 8, 12:09 AM PDT	Extreme Heat Warning	VEF	Inyo, San Bernardino	68 hr
Sep 8, 3:10 AM PDT	Heat Advisory	SGX	Orange, Riverside, San Diego	35 hr
Sep 8, 7:57 AM PDT	Small Craft Advisory	LOX		25 hr
Sep 8, 9:03 AM PDT	Coastal Flood Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, City and County of San Francisco and 4 more	40 hr
Sep 8, 9:25 AM PDT	Special Weather Statement	LOX	Los Angeles	35 min
Sep 8, 10:49 AM PDT	Extreme Heat Warning	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	57 hr
Sep 8, 12:24 PM PDT	Special Weather Statement	LOX		81 min
Sep 8, 1:42 PM PDT	Special Weather Statement	LOX	Santa Barbara	33 min
Sep 8, 1:55 PM PDT	Areal Flood Advisory	LOX	Ventura	3 hr
Sep 8, 2:11 PM PDT	Areal Flood Advisory	HNX	Kern	3 hr
Sep 8, 2:42 PM PDT	Areal Flood Advisory	LOX	San Luis Obispo, Santa Barbara	2 hr
Sep 8, 2:48 PM PDT	Special Weather Statement	LOX	Ventura	42 min
Sep 8, 3:37 PM PDT	Special Weather Statement	SGX	San Diego	23 min
Sep 8, 3:44 PM PDT	Special Weather Statement	SGX	San Diego	46 min
Sep 8, 4:10 PM PDT	Special Weather Statement	SGX	San Diego	50 min
Sep 8, 4:30 PM PDT	Areal Flood Advisory	SGX	San Diego	106 min
Sep 8, 5:03 PM PDT	Areal Flood Advisory	SGX	San Bernardino	117 min
Sep 8, 5:08 PM PDT	Severe Thunderstorm Warning	SGX	Riverside, San Diego	35 min
Sep 8, 5:21 PM PDT	Areal Flood Advisory	SGX	Riverside	114 min
Sep 8, 5:41 PM PDT	Areal Flood Advisory	SGX	San Bernardino	109 min
Sep 9, 2:26 AM PDT	Small Craft Advisory	MTR		5 days
Sep 9, 8:31 AM PDT	Small Craft Advisory	LOX		4 days
Sep 9, 8:43 AM PDT	Small Craft Advisory	EKA		66 hr
Sep 9, 1:58 PM PDT	Special Weather Statement	SGX	San Diego	47 min
Sep 9, 2:46 PM PDT	Special Weather Statement	LOX	Ventura	29 min
Sep 9, 2:55 PM PDT	Areal Flood Advisory	LOX	Ventura	2 hr
Sep 9, 3:20 PM PDT	Special Weather Statement	LOX	Ventura	25 min
Sep 9, 3:36 PM PDT	Areal Flood Advisory	LOX	Ventura	84 min
Sep 9, 4:58 PM PDT	Areal Flood Advisory	SGX	Riverside	62 min
Sep 10, 2:50 AM PDT	Small Craft Advisory	MTR		5 days
Sep 10, 8:08 AM PDT	Gale Watch	LOX		42 hr
Sep 10, 10:00 AM PDT	Wind Advisory	LOX	Santa Barbara	20 hr
Sep 10, 10:41 AM PDT	Fire Weather Watch	STO	Butte, Colusa, Glenn, Nevada, Placer, Plumas and 4 more	23 hr
Sep 10, 11:42 AM PDT	Fire Weather Watch	REV	Lassen, Madera, Modoc, Mono	23 hr
Sep 10, 11:49 AM PDT	High Wind Watch	REV	Mono	24 hr
Sep 10, 11:49 AM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more	32 hr
Sep 10, 11:49 AM PDT	Wind Advisory	REV	Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more	60 hr
Sep 10, 3:35 PM PDT	Special Weather Statement	LOX	Los Angeles	25 min
Sep 10, 3:44 PM PDT	Areal Flood Advisory	LOX	Los Angeles	76 min
Sep 10, 4:53 PM PDT	Wind Advisory	HNX	Kern	15 hr
Sep 10, 8:23 PM PDT	Small Craft Advisory	LOX		30 hr
Sep 10, 9:18 PM PDT	Fire Weather Watch	EKA	Lake	13 hr
Sep 10, 9:20 PM PDT	Heat Advisory	LOX	Los Angeles, Santa Barbara, Ventura	21 hr
Sep 11, 2:30 AM PDT	Heat Advisory	SGX	Orange, Riverside, San Bernardino, San Diego	18 hr
Sep 11, 2:51 AM PDT	Small Craft Advisory	MTR		6 days
Sep 11, 7:23 AM PDT	Wind Advisory	LOX	Santa Barbara	20 hr
Sep 11, 10:02 AM PDT	Red Flag Warning	STO	Butte, Colusa, Glenn, Nevada, Placer, Plumas and 4 more	3 days
Sep 11, 10:09 AM PDT	Red Flag Warning	EKA	Lake	40 hr
Sep 11, 10:18 AM PDT	Red Flag Warning	REV	Lassen, Madera, Modoc, Mono	38 hr
Sep 11, 6:28 PM PDT	Lake Wind Advisory	HNX	Fresno, Kern, Merced, Tulare	53 hr
Sep 11, 6:28 PM PDT	Wind Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	41 hr
Sep 11, 8:36 PM PDT	Gale Warning	MTR		48 hr
Sep 12, 2:16 AM PDT	Gale Warning	LOX		48 hr
Sep 12, 2:16 AM PDT	Small Craft Advisory	LOX		23 hr
Sep 12, 2:31 AM PDT	Wind Advisory	LOX	San Luis Obispo, Santa Barbara, Ventura	48 hr
Sep 12, 8:47 AM PDT	Small Craft Advisory	MTR		5 days
Sep 12, 2:55 PM PDT	Small Craft Advisory	EKA		5 days
Sep 13, 1:36 AM PDT	Small Craft Advisory	LOX		25 hr
Sep 13, 2:20 AM PDT	Small Craft Advisory	MTR		55 hr
Sep 13, 8:35 PM PDT	Small Craft Advisory	MTR		24 hr
Sep 14, 2:32 AM PDT	Small Craft Advisory	LOX		33 hr
Sep 14, 10:46 AM PDT	Lake Wind Advisory	HNX	Fresno, Merced	53 min
Sep 14, 11:39 AM PDT	Lake Wind Advisory	HNX	Fresno, Merced	60 hr
Sep 16, 3:24 PM PDT	Special Weather Statement	EKA		36 min
Sep 16, 3:29 PM PDT	Special Weather Statement	EKA	Trinity	31 min
Sep 16, 3:44 PM PDT	Special Weather Statement	EKA	Humboldt	31 min
Sep 16, 3:47 PM PDT	Special Weather Statement	EKA	Trinity	28 min
Sep 16, 3:55 PM PDT	Special Weather Statement	EKA	Del Norte	35 min
Sep 16, 4:27 PM PDT	Special Weather Statement	EKA		33 min
Sep 16, 4:32 PM PDT	Special Weather Statement	MFR	Siskiyou	28 min
Sep 16, 4:39 PM PDT	Special Weather Statement	EKA	Trinity	36 min
Sep 16, 5:04 PM PDT	Special Weather Statement	EKA	Del Norte	26 min
Sep 16, 5:12 PM PDT	Severe Thunderstorm Warning	MFR	Siskiyou	13 min
Sep 16, 5:18 PM PDT	Special Weather Statement	EKA		27 min
Sep 16, 5:30 PM PDT	Severe Thunderstorm Warning	EKA	Mendocino, Trinity	45 min
Sep 16, 5:36 PM PDT	Special Weather Statement	EKA	Humboldt	39 min
Sep 16, 5:40 PM PDT	Special Weather Statement	EKA	Del Norte	35 min
Sep 16, 5:40 PM PDT	Severe Thunderstorm Warning	VEF	San Bernardino	50 min
Sep 16, 5:47 PM PDT	Dust Storm Warning	PSR	Imperial	58 min
Sep 16, 5:52 PM PDT	Flash Flood Warning Considerable damage threat	VEF	San Bernardino	4 hr
Sep 16, 6:14 PM PDT	Special Weather Statement	EKA	Mendocino	31 min
Sep 16, 6:32 PM PDT	Special Weather Statement	EKA	Humboldt	28 min
Sep 16, 6:44 PM PDT	Dust Storm Advisory	PSR	Imperial	61 min
Sep 16, 7:03 PM PDT	Special Weather Statement	EKA	Humboldt	27 min
Sep 16, 9:09 PM PDT	Small Craft Advisory	LOX		4 days
Sep 17, 2:03 AM PDT	Small Craft Advisory	MTR		7 days
Sep 17, 2:51 PM PDT	Small Craft Advisory	EKA		6 days
Sep 17, 4:23 PM PDT	Special Weather Statement	EKA	Trinity	37 min
Sep 18, 2:12 AM PDT	Small Craft Advisory	MTR		3 days
Sep 18, 2:45 PM PDT	Small Craft Advisory	EKA		6 days
Sep 19, 2:33 AM PDT	Small Craft Advisory	MTR		42 hr
Sep 19, 8:12 PM PDT	Small Craft Advisory	LOX		24 hr
Sep 21, 2:35 AM PDT	Small Craft Advisory	MTR		50 hr
Sep 21, 3:46 AM PDT	Lake Wind Advisory	HNX	Fresno, Merced	25 hr
Sep 21, 8:30 AM PDT	Small Craft Advisory	LOX		43 hr
Sep 21, 3:29 PM PDT	Severe Thunderstorm Warning	STO	Plumas, Sierra	30 min
Sep 21, 3:30 PM PDT	Special Weather Statement	HNX	Madera	30 min
Sep 21, 3:35 PM PDT	Areal Flood Advisory	VEF	Inyo	4 hr
Sep 21, 3:53 PM PDT	Special Weather Statement	HNX	Tulare	22 min
Sep 21, 4:32 PM PDT	Severe Thunderstorm Warning	STO	Plumas	28 min
Sep 21, 4:52 PM PDT	Severe Thunderstorm Warning	STO	Plumas	23 min
Sep 21, 8:29 PM PDT	Small Craft Advisory	LOX		48 hr
Sep 22, 2:38 AM PDT	Gale Warning	EKA		18 hr
Sep 23, 10:43 AM PDT	Red Flag Warning	MFR	Modoc	33 hr
Sep 23, 2:31 PM PDT	Small Craft Advisory	EKA		50 hr
Sep 23, 2:47 PM PDT	Small Craft Advisory	MTR		3 days
Sep 23, 8:24 PM PDT	Small Craft Advisory	LOX		7 hr
Sep 23, 8:24 PM PDT	Small Craft Advisory	LOX		55 hr
Sep 23, 8:47 PM PDT	Small Craft Advisory	MTR		48 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
Severe Thunderstorm Warning	8
Special Weather Statement	30
Flooding
Flash Flood Warning	2
Areal Flood Advisory	20
Heat
Extreme Heat Warning	4
Heat Advisory	8
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	2
Wind and dust
Dust Storm Warning	1
High Wind Watch	1
Dust Storm Advisory	2
Lake Wind Advisory	7
Wind Advisory	10
Fire
Red Flag Warning	5
Fire Weather Watch	3
Coast and beach
Coastal Flood Advisory	4
High Surf Advisory	2
Beach Hazards Statement	3
Marine
Gale Warning	4
Gale Watch	1
Small Craft Advisory	41

By county

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

18 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2025

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.