Weather alerts in California, September 2010

109 weather alerts in September 2010, 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 2010. Tap one for its archive.

Alerts: 109
Warnings: 19
Watches: 18
Advisories: 69
Busiest day: September 3, 201012 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, 2:14 PM PDT	Gale Watch	EKA		36 hr
Sep 1, 2:14 PM PDT	Hazardous Seas Watch	EKA		36 hr
Sep 2, 3:01 AM PDT	Excessive Heat Watch	PSR		12 hr
Sep 2, 1:00 PM PDT	Fire Weather Watch	REV	El Dorado, Lassen, Modoc, Nevada, Placer, Sierra	22 hr
Sep 2, 2:30 PM PDT	Excessive Heat Watch	VEF	Inyo, San Bernardino	13 hr
Sep 2, 2:33 PM PDT	Excessive Heat Warning	PSR		29 hr
Sep 2, 5:09 PM PDT	Small Craft Advisory	MTR		9 hr
Sep 2, 9:45 PM PDT	Dense Fog Advisory	LOX		11 hr
Sep 3, 1:55 AM PDT	Gale Warning	EKA		4 days
Sep 3, 1:55 AM PDT	Hazardous Seas Warning	EKA		4 days
Sep 3, 2:23 AM PDT	Small Craft Advisory	MTR		19 hr
Sep 3, 2:23 AM PDT	Small Craft Advisory	MTR		3 days
Sep 3, 3:06 AM PDT	Excessive Heat Warning	PSR		41 hr
Sep 3, 3:35 AM PDT	Excessive Heat Warning	VEF	Inyo, San Bernardino	39 hr
Sep 3, 2:15 PM PDT	Small Craft Advisory	LOX		61 hr
Sep 3, 2:28 PM PDT	Small Craft Advisory	EKA		4 days
Sep 3, 2:39 PM PDT	Freeze Watch	MFR	Modoc, Siskiyou	24 hr
Sep 3, 3:57 PM PDT	Red Flag Warning	LOX		29 hr
Sep 4, 2:52 PM PDT	Freeze Warning	MFR	Modoc, Siskiyou	41 hr
Sep 4, 3:41 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	42 hr
Sep 5, 2:23 AM PDT	Small Craft Advisory	MTR		12 hr
Sep 5, 3:04 AM PDT	Small Craft Advisory	LOX		24 hr
Sep 5, 6:59 AM PDT	Gale Warning	MTR		22 hr
Sep 5, 2:39 PM PDT	Fire Weather Watch	REV	Lassen	23 hr
Sep 6, 2:24 AM PDT	Fire Weather Watch	VEF	San Bernardino	24 hr
Sep 6, 4:18 AM PDT	Fire Weather Watch	MFR	Modoc	7 hr
Sep 6, 5:01 AM PDT	Small Craft Advisory	MTR		42 hr
Sep 6, 1:46 PM PDT	Red Flag Warning	REV	El Dorado, Lassen, Nevada, Placer, Sierra	33 hr
Sep 6, 2:45 PM PDT	Small Craft Advisory	MTR		62 hr
Sep 6, 3:16 PM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	56 hr
Sep 6, 3:16 PM PDT	Wind Advisory	REV	Mono	32 hr
Sep 7, 2:08 AM PDT	Red Flag Warning	VEF	San Bernardino	42 hr
Sep 7, 3:11 PM PDT	Fire Weather Watch	REV		8 hr
Sep 8, 3:24 AM PDT	Small Craft Advisory	MTR		24 hr
Sep 8, 3:35 AM PDT	Wind Advisory	LOX		17 hr
Sep 8, 4:56 PM PDT	Special Weather Statement	STO	Tehama	34 min
Sep 9, 3:01 AM PDT	Freeze Watch	MFR	Modoc, Siskiyou	11 hr
Sep 9, 3:02 AM PDT	Small Craft Advisory	LOX		30 hr
Sep 9, 1:51 PM PDT	Frost Advisory	MFR	Modoc, Siskiyou	7 hr
Sep 9, 1:51 PM PDT	Freeze Warning	MFR	Modoc, Siskiyou	19 hr
Sep 9, 2:22 PM PDT	Small Craft Advisory	EKA		5 days
Sep 9, 8:23 PM PDT	Small Craft Advisory	MTR		7 hr
Sep 10, 3:23 AM PDT	Frost Advisory	MFR	Modoc, Siskiyou	29 hr
Sep 10, 1:55 PM PDT	Freeze Warning	MFR	Modoc	19 hr
Sep 10, 9:32 PM PDT	Dense Fog Advisory	LOX		11 hr
Sep 11, 9:01 AM PDT	Marine Dense Fog Advisory	MTR		3 hr
Sep 11, 2:30 PM PDT	Frost Advisory	MFR	Modoc, Siskiyou	18 hr
Sep 12, 8:34 AM PDT	Small Craft Advisory	MTR		14 hr
Sep 12, 2:22 PM PDT	Frost Advisory	MFR	Modoc, Siskiyou	18 hr
Sep 13, 2:39 AM PDT	Small Craft Advisory	MTR		19 hr
Sep 15, 2:51 AM PDT	Small Craft Advisory	MTR		50 hr
Sep 15, 2:26 PM PDT	Small Craft Advisory	LOX		61 hr
Sep 16, 2:41 AM PDT	Dense Fog Advisory	LOX		6 hr
Sep 17, 5:57 AM PDT	Small Craft Advisory	MTR		17 hr
Sep 17, 2:44 PM PDT	Fire Weather Watch	REV		23 hr
Sep 17, 8:25 PM PDT	Dense Fog Advisory	LOX		13 hr
Sep 18, 2:35 AM PDT	Small Craft Advisory	EKA		24 hr
Sep 18, 2:57 AM PDT	Small Craft Advisory	LOX		4 days
Sep 18, 3:00 AM PDT	Lake Wind Advisory	REV	Alpine, El Dorado, Nevada, Placer	42 hr
Sep 18, 4:32 AM PDT	Small Craft Advisory	MTR		18 hr
Sep 18, 1:41 PM PDT	Red Flag Warning	REV		31 hr
Sep 19, 4:57 AM PDT	Dense Fog Advisory	LOX		4 hr
Sep 19, 4:21 PM PDT	Special Weather Statement	STO	Colusa	69 min
Sep 19, 4:43 PM PDT	Areal Flood Advisory	STO	Butte, Colusa, Glenn, Tehama	2 hr
Sep 19, 9:27 PM PDT	Wind Advisory	LOX		7 hr
Sep 20, 3:12 AM PDT	Frost Advisory	MFR	Modoc, Siskiyou	29 hr
Sep 20, 3:44 AM PDT	Small Craft Advisory	MTR		49 hr
Sep 20, 6:12 AM PDT	Dense Fog Advisory	LOX		3 hr
Sep 20, 7:35 AM PDT	Dense Fog Advisory	STO		81 min
Sep 20, 2:24 PM PDT	Gale Watch	LOX		6 hr
Sep 20, 8:13 PM PDT	Gale Warning	LOX		55 hr
Sep 21, 3:22 AM PDT	Small Craft Advisory	LOX		71 hr
Sep 21, 1:46 PM PDT	Wind Advisory	HNX		33 hr
Sep 21, 2:00 PM PDT	Frost Advisory	MFR	Modoc, Siskiyou	18 hr
Sep 22, 3:32 AM PDT	Freeze Watch	MFR	Modoc, Siskiyou	10 hr
Sep 22, 9:21 AM PDT	Wind Advisory	LOX		15 hr
Sep 22, 1:30 PM PDT	Freeze Warning	MFR	Modoc, Siskiyou	19 hr
Sep 23, 3:41 AM PDT	Freeze Watch	MFR	Modoc, Siskiyou	10 hr
Sep 23, 8:49 AM PDT	Small Craft Advisory	MTR		6 hr
Sep 23, 1:39 PM PDT	Freeze Warning	MFR	Modoc, Siskiyou	18 hr
Sep 23, 2:59 PM PDT	Small Craft Advisory	EKA		30 hr
Sep 24, 2:36 AM PDT	Small Craft Advisory	MTR		21 hr
Sep 24, 3:03 AM PDT	Frost Advisory	MFR	Modoc, Siskiyou	29 hr
Sep 24, 9:14 AM PDT	Fire Weather Watch	LOX	Los Angeles	54 hr
Sep 25, 2:08 AM PDT	Small Craft Advisory	EKA		5 days
Sep 25, 9:10 AM PDT	Red Flag Warning	LOX	Los Angeles	60 hr
Sep 25, 1:13 PM PDT	Fire Weather Watch	HNX		25 hr
Sep 25, 8:23 PM PDT	Small Craft Advisory	MTR		3 days
Sep 26, 3:05 AM PDT	Small Craft Advisory	LOX		24 hr
Sep 26, 10:20 AM PDT	Excessive Heat Watch	VEF	Inyo, San Bernardino	17 hr
Sep 26, 1:45 PM PDT	Red Flag Warning	HNX		30 hr
Sep 26, 10:47 PM PDT	Small Craft Advisory	MTR		4 hr
Sep 27, 3:08 AM PDT	Small Craft Advisory for Hazardous Seas	LOX		24 hr
Sep 27, 8:50 AM PDT	Small Craft Advisory for Rough Bar	MTR		5 hr
Sep 27, 2:02 PM PDT	Small Craft Advisory	EKA		61 hr
Sep 27, 2:02 PM PDT	Small Craft Advisory for Hazardous Seas	EKA		13 hr
Sep 28, 2:30 AM PDT	Small Craft Advisory	MTR		43 hr
Sep 28, 2:07 PM PDT	Small Craft Advisory for Hazardous Seas	EKA		24 hr
Sep 28, 9:15 PM PDT	Small Craft Advisory for Rough Bar	MTR		17 hr
Sep 28, 9:15 PM PDT	Small Craft Advisory for Hazardous Seas	MTR		6 hr
Sep 29, 5:10 PM PDT	High Surf Advisory	LOX		16 hr
Sep 29, 9:00 PM PDT	Small Craft Advisory for Hazardous Seas	LOX		6 hr
Sep 29, 9:09 PM PDT	Small Craft Advisory	MTR		3 hr
Sep 30, 1:52 AM PDT	Special Weather Statement	PSR	Imperial	53 min
Sep 30, 2:37 AM PDT	Small Craft Advisory	MTR		18 hr
Sep 30, 2:37 AM PDT	Small Craft Advisory	MTR		5 days
Sep 30, 7:41 AM PDT	Red Flag Warning	SGX	Orange, Riverside, San Bernardino, San Diego	14 hr
Sep 30, 8:37 AM PDT	Areal Flood Advisory	SGX	San Diego	91 min
Sep 30, 1:40 PM PDT	Areal Flood Advisory	SGX	San Diego	5 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
Special Weather Statement	3
Flooding
Areal Flood Advisory	3
Heat
Excessive Heat Warning	3
Excessive Heat Watch	3
Cold
Freeze Warning	5
Freeze Watch	4
Frost Advisory	7
Wind and dust
Lake Wind Advisory	3
Wind Advisory	5
Fire
Red Flag Warning	7
Fire Weather Watch	8
Fog and smoke
Dense Fog Advisory	7
Coast and beach
High Surf Advisory	1
Marine
Gale Warning	3
Hazardous Seas Warning	1
Gale Watch	2
Hazardous Seas Watch	1
Marine Dense Fog Advisory	1
Small Craft Advisory	35
Small Craft Advisory for Hazardous Seas	5
Small Craft Advisory for Rough Bar	2

By county

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

Nearby

Alerts in force now Tornadoes on record The radar archive 2009 2011

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.