Alert archive / California / 2009
Weather alerts in California, December 2009
293 weather alerts in December 2009, 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 2009. Tap one for its archive.
- Alerts
- 293
- Warnings
- 71
- Watches
- 44
- Advisories
- 168
- Busiest day
- December 7, 200926 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, 8:16 PM PST | Small Craft Advisory | EKA | 29 hr | |
| Dec 2, 1:25 PM PST | Frost Advisory | HNX | 19 hr | |
| Dec 2, 1:25 PM PST | Freeze Watch | HNX | 21 hr | |
| Dec 3, 3:09 AM PST | Small Craft Advisory for Hazardous Seas | EKA | 35 hr | |
| Dec 3, 4:03 AM PST | Freeze Warning | VEF | San Bernardino | 28 hr |
| Dec 3, 4:03 AM PST | Freeze Warning | VEF | San Bernardino | 50 hr |
| Dec 3, 6:08 AM PST | Dense Fog Advisory | STO | 4 hr | |
| Dec 3, 9:28 AM PST | Wind Advisory | VEF | San Bernardino | 10 hr |
| Dec 3, 3:45 PM PST | Red Flag Warning | VEF | San Bernardino | 4 hr |
| Dec 4, 2:34 AM PST | Dense Fog Advisory | LOX | 5 hr | |
| Dec 4, 2:42 AM PST | Small Craft Advisory | MTR | 58 hr | |
| Dec 4, 2:57 AM PST | Small Craft Advisory for Hazardous Seas | LOX | 18 hr | |
| Dec 4, 2:00 PM PST | Wind Advisory | VEF | Inyo, San Bernardino | 30 hr |
| Dec 4, 2:18 PM PST | Small Craft Advisory | EKA | 3 days | |
| Dec 4, 4:49 PM PST | Lake Wind Advisory | REV | Alpine, El Dorado, Nevada, Placer | 23 hr |
| Dec 5, 3:30 AM PST | Winter Storm Watch | STO | 32 hr | |
| Dec 5, 4:21 AM PST | Winter Storm Watch | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 24 hr |
| Dec 5, 9:22 AM PST | Frost Advisory | STO | 24 hr | |
| Dec 5, 9:22 AM PST | Hard Freeze Watch | STO | 43 hr | |
| Dec 5, 11:15 AM PST | Wind Advisory | STO | 4 hr | |
| Dec 5, 1:05 PM PST | Winter Storm Watch | SGX | Riverside, San Bernardino | 23 hr |
| Dec 5, 1:27 PM PST | Hard Freeze Warning | EKA | 19 hr | |
| Dec 5, 2:01 PM PST | Freeze Watch | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 2 more | 38 hr |
| Dec 5, 2:29 PM PST | Winter Storm Watch | LOX | 24 hr | |
| Dec 5, 2:30 PM PST | Freeze Watch | HNX | 37 hr | |
| Dec 5, 2:30 PM PST | Winter Storm Watch | HNX | 20 hr | |
| Dec 5, 2:30 PM PST | Small Craft Advisory | LOX | 13 hr | |
| Dec 5, 2:45 PM PST | High Wind Watch | VEF | Inyo | 13 hr |
| Dec 5, 3:24 PM PST | Lake Wind Advisory | REV | Alpine, El Dorado, Nevada, Placer | 24 hr |
| Dec 5, 3:43 PM PST | Winter Storm Watch | VEF | Inyo, San Bernardino | 23 hr |
| Dec 5, 8:45 PM PST | Small Craft Advisory for Hazardous Seas | EKA | 6 hr | |
| Dec 6, 2:22 AM PST | Small Craft Advisory | SGX | 11 hr | |
| Dec 6, 3:58 AM PST | High Wind Warning | VEF | Inyo | 18 hr |
| Dec 6, 3:58 AM PST | Wind Advisory | VEF | Inyo, San Bernardino | 24 hr |
| Dec 6, 4:09 AM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 39 hr |
| Dec 6, 4:09 AM PST | Winter Weather Advisory | REV | Modoc | 35 hr |
| Dec 6, 9:03 AM PST | Gale Watch | LOX | 17 hr | |
| Dec 6, 10:20 AM PST | Winter Storm Warning | HNX | 38 hr | |
| Dec 6, 10:20 AM PST | Winter Weather Advisory | HNX | 17 hr | |
| Dec 6, 11:16 AM PST | High Wind Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 16 hr |
| Dec 6, 11:18 AM PST | Hard Freeze Watch | STO | 40 hr | |
| Dec 6, 11:51 AM PST | Winter Storm Warning | STO | 30 hr | |
| Dec 6, 11:51 AM PST | Winter Weather Advisory | STO | 3 hr | |
| Dec 6, 11:51 AM PST | Winter Weather Advisory | STO | 16 hr | |
| Dec 6, 12:27 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 39 hr |
| Dec 6, 1:05 PM PST | Gale Watch | SGX | 13 hr | |
| Dec 6, 1:06 PM PST | Wind Advisory | REV | Mono | 118 min |
| Dec 6, 1:42 PM PST | Wind Advisory | HNX | 10 hr | |
| Dec 6, 2:05 PM PST | Winter Storm Warning | LOX | 43 hr | |
| Dec 6, 2:19 PM PST | Hard Freeze Warning | EKA | 19 hr | |
| Dec 6, 2:26 PM PST | Winter Storm Warning | VEF | Inyo, San Bernardino | 37 hr |
| Dec 6, 2:33 PM PST | Flash Flood Watch | LOX | Los Angeles | 28 hr |
| Dec 6, 2:34 PM PST | High Wind Watch | LOX | 23 hr | |
| Dec 6, 3:04 PM PST | High Wind Warning | REV | Mono | 7 hr |
| Dec 6, 6:01 PM PST | Coastal Flood Statement | LOX | 26 hr | |
| Dec 6, 6:56 PM PST | Winter Weather Advisory | MTR | Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz | 17 hr |
| Dec 6, 7:09 PM PST | Flash Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 25 hr |
| Dec 7, 2:19 AM PST | Gale Warning | SGX | 20 hr | |
| Dec 7, 2:22 AM PST | Gale Warning | LOX | 24 hr | |
| Dec 7, 2:22 AM PST | Small Craft Advisory | LOX | 12 hr | |
| Dec 7, 2:54 AM PST | High Wind Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 27 hr |
| Dec 7, 3:01 AM PST | Wind Advisory | LOX | Los Angeles | 19 hr |
| Dec 7, 3:07 AM PST | Mesoscale Discussion | SPC | Amador, Calaveras, Mariposa, Tuolumne | 3 hr |
| Dec 7, 3:08 AM PST | Freeze Warning | HNX | 30 hr | |
| Dec 7, 3:08 AM PST | Freeze Warning | HNX | 54 hr | |
| Dec 7, 3:51 AM PST | Winter Weather Advisory | STO | 8 hr | |
| Dec 7, 3:55 AM PST | Freeze Warning | STO | 29 hr | |
| Dec 7, 4:09 AM PST | Frost Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, San Mateo, Santa Clara and 2 more | 29 hr |
| Dec 7, 4:09 AM PST | Freeze Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 2 more | 29 hr |
| Dec 7, 4:14 AM PST | Winter Weather Advisory | VEF | 17 hr | |
| Dec 7, 7:45 AM PST | High Surf Advisory | SGX | San Diego | 11 hr |
| Dec 7, 7:57 AM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 19 hr |
| Dec 7, 8:44 AM PST | Mesoscale Discussion | SPC | Kern | 5 hr |
| Dec 7, 12:20 PM PST | Wind Advisory | PSR | 18 hr | |
| Dec 7, 1:58 PM PST | Frost Advisory | LOX | Los Angeles | 19 hr |
| Dec 7, 1:58 PM PST | Freeze Watch | LOX | Los Angeles | 24 hr |
| Dec 7, 1:58 PM PST | High Wind Warning | LOX | 13 hr | |
| Dec 7, 2:10 PM PST | Hard Freeze Warning | EKA | 19 hr | |
| Dec 7, 2:15 PM PST | Wind Advisory | HNX | 10 hr | |
| Dec 7, 2:20 PM PST | Small Craft Advisory | MTR | 13 hr | |
| Dec 7, 4:02 PM PST | Areal Flood Advisory | PSR | Imperial | 118 min |
| Dec 7, 4:45 PM PST | Winter Weather Advisory | LOX | 3 hr | |
| Dec 7, 7:27 PM PST | High Wind Warning | HNX | 5 hr | |
| Dec 7, 8:05 PM PST | High Surf Advisory | LOX | 6 hr | |
| Dec 7, 8:24 PM PST | Small Craft Advisory for Hazardous Seas | EKA | 5 hr | |
| Dec 7, 8:32 PM PST | Small Craft Advisory | SGX | 10 hr | |
| Dec 7, 8:38 PM PST | High Surf Advisory | SGX | San Diego | 4 days |
| Dec 7, 8:49 PM PST | Small Craft Advisory | LOX | 12 hr | |
| Dec 7, 9:53 PM PST | Freeze Warning | LOX | 10 hr | |
| Dec 7, 10:19 PM PST | Wind Advisory | VEF | San Bernardino | 8 hr |
| Dec 8, 1:48 AM PST | Small Craft Advisory for Hazardous Seas | EKA | 37 hr | |
| Dec 8, 3:30 AM PST | Freeze Warning | STO | 30 hr | |
| Dec 8, 9:00 AM PST | Freeze Watch | HNX | 6 hr | |
| Dec 8, 9:47 AM PST | Frost Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, San Mateo, Santa Clara and 2 more | 23 hr |
| Dec 8, 9:47 AM PST | Freeze Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 2 more | 23 hr |
| Dec 8, 1:14 PM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 20 hr |
| Dec 8, 2:09 PM PST | Hard Freeze Warning | EKA | 19 hr | |
| Dec 8, 2:22 PM PST | Frost Advisory | LOX | Los Angeles | 18 hr |
| Dec 8, 2:22 PM PST | Freeze Warning | LOX | 14 hr | |
| Dec 8, 2:32 PM PST | Small Craft Advisory for Hazardous Seas | LOX | 36 hr | |
| Dec 8, 2:33 PM PST | High Surf Advisory | LOX | 52 hr | |
| Dec 8, 2:35 PM PST | Freeze Warning | HNX | 36 hr | |
| Dec 9, 8:41 AM PST | Small Craft Advisory for Rough Bar | MTR | 19 hr | |
| Dec 9, 11:52 AM PST | Freeze Warning | MTR | Marin, Napa, Sonoma | 15 hr |
| Dec 9, 1:43 PM PST | Freeze Warning | STO | 20 hr | |
| Dec 9, 2:21 PM PST | Hard Freeze Warning | EKA | 19 hr | |
| Dec 10, 1:00 AM PST | Small Craft Advisory for Winds | EKA | 50 hr | |
| Dec 10, 2:47 AM PST | Small Craft Advisory | LOX | 3 days | |
| Dec 10, 3:00 AM PST | Winter Storm Watch | HNX | 50 hr | |
| Dec 10, 4:03 AM PST | Small Craft Advisory | MTR | 34 hr | |
| Dec 10, 4:05 AM PST | Winter Storm Watch | STO | 48 hr | |
| Dec 10, 4:31 AM PST | Winter Storm Watch | VEF | Inyo | 35 hr |
| Dec 10, 4:46 AM PST | Winter Storm Watch | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 34 hr |
| Dec 10, 2:12 PM PST | Winter Weather Advisory | LOX | 19 hr | |
| Dec 10, 2:17 PM PST | Winter Weather Advisory | MFR | Siskiyou | 23 hr |
| Dec 10, 2:42 PM PST | Winter Weather Advisory | HNX | 21 hr | |
| Dec 10, 2:53 PM PST | Small Craft Advisory | EKA | 54 hr | |
| Dec 10, 2:59 PM PST | Winter Weather Advisory | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 19 hr |
| Dec 10, 3:26 PM PST | Winter Weather Advisory | STO | 37 hr | |
| Dec 10, 9:19 PM PST | Areal Flood Advisory | HNX | Kern | 3 hr |
| Dec 10, 11:06 PM PST | Areal Flood Advisory | LOX | Los Angeles | 4 hr |
| Dec 11, 4:26 AM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 54 hr |
| Dec 11, 4:44 AM PST | Areal Flood Advisory | HNX | Fresno | 3 hr |
| Dec 11, 9:54 AM PST | Special Marine Warning | LOX | 51 min | |
| Dec 11, 9:56 AM PST | Flash Flood Watch | LOX | 4 hr | |
| Dec 11, 10:44 AM PST | Special Marine Warning | LOX | 61 min | |
| Dec 11, 2:07 PM PST | Winter Storm Watch | LOX | 14 hr | |
| Dec 11, 2:13 PM PST | Winter Weather Advisory | MFR | Siskiyou | 32 hr |
| Dec 11, 2:31 PM PST | Small Craft Advisory | MTR | 36 hr | |
| Dec 11, 2:58 PM PST | Winter Weather Advisory | REV | Modoc | 37 hr |
| Dec 11, 3:33 PM PST | Winter Storm Warning | HNX | 48 hr | |
| Dec 11, 3:53 PM PST | Winter Storm Warning | VEF | Inyo | 42 hr |
| Dec 12, 3:23 AM PST | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 31 hr |
| Dec 12, 3:24 AM PST | Winter Weather Advisory | SGX | San Bernardino | 31 hr |
| Dec 12, 3:25 AM PST | Winter Storm Warning | STO | 41 hr | |
| Dec 12, 3:25 AM PST | Winter Weather Advisory | STO | 23 hr | |
| Dec 12, 3:59 AM PST | Winter Storm Warning | LOX | 29 hr | |
| Dec 12, 4:32 AM PST | Flash Flood Watch | LOX | Los Angeles | 28 hr |
| Dec 12, 6:40 AM PST | Areal Flood Advisory | LOX | Los Angeles | 2 hr |
| Dec 12, 10:27 AM PST | High Wind Warning | LOX | 20 hr | |
| Dec 12, 10:27 AM PST | Wind Advisory | LOX | Los Angeles, Santa Barbara | 17 hr |
| Dec 12, 1:06 PM PST | Small Craft Advisory | SGX | 18 hr | |
| Dec 12, 1:46 PM PST | Wind Advisory | HNX | 4 hr | |
| Dec 12, 2:26 PM PST | Gale Watch | EKA | 24 hr | |
| Dec 12, 2:26 PM PST | Hazardous Seas Watch | EKA | 43 hr | |
| Dec 12, 2:40 PM PST | Winter Weather Advisory | VEF | 58 min | |
| Dec 12, 4:11 PM PST | Flash Flood Warning | LOX | Los Angeles | 2 hr |
| Dec 12, 4:14 PM PST | Areal Flood Advisory | LOX | Los Angeles | 3 hr |
| Dec 12, 4:31 PM PST | Areal Flood Advisory | LOX | San Luis Obispo, Santa Barbara | 3 hr |
| Dec 12, 4:57 PM PST | Areal Flood Advisory | SGX | Riverside, San Bernardino | 9 hr |
| Dec 12, 5:59 PM PST | Flash Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 15 hr |
| Dec 12, 6:12 PM PST | Flash Flood Warning | LOX | Los Angeles | 3 hr |
| Dec 12, 7:03 PM PST | Areal Flood Advisory | LOX | Los Angeles | 4 hr |
| Dec 12, 9:04 PM PST | Small Craft Advisory | MTR | 6 hr | |
| Dec 12, 9:33 PM PST | Areal Flood Advisory | LOX | San Luis Obispo, Santa Barbara, Ventura | 3 hr |
| Dec 12, 10:47 PM PST | Areal Flood Advisory | LOX | Los Angeles | 6 hr |
| Dec 12, 11:53 PM PST | Special Marine Warning | LOX | 37 min | |
| Dec 13, 12:19 AM PST | Special Weather Statement | LOX | San Luis Obispo | 41 min |
| Dec 13, 12:25 AM PST | Special Marine Warning | LOX | 20 min | |
| Dec 13, 12:45 AM PST | Severe Thunderstorm Warning | LOX | San Luis Obispo, Santa Barbara | 60 min |
| Dec 13, 12:55 AM PST | Flash Flood Warning | LOX | Los Angeles | 4 hr |
| Dec 13, 1:19 AM PST | Flash Flood Warning | SGX | San Diego | 109 min |
| Dec 13, 1:55 AM PST | Special Weather Statement | LOX | Santa Barbara | 50 min |
| Dec 13, 3:04 AM PST | Small Craft Advisory | MTR | 10 hr | |
| Dec 13, 4:33 AM PST | Areal Flood Advisory | LOX | Los Angeles | 117 min |
| Dec 13, 5:49 AM PST | Areal Flood Advisory | SGX | Riverside | 3 hr |
| Dec 13, 8:38 AM PST | Small Craft Advisory for Hazardous Seas | LOX | 18 hr | |
| Dec 13, 2:16 PM PST | Winter Storm Watch | MFR | Siskiyou | 14 hr |
| Dec 13, 2:19 PM PST | Gale Warning | EKA | 60 hr | |
| Dec 13, 2:19 PM PST | Small Craft Advisory | EKA | 31 hr | |
| Dec 13, 2:19 PM PST | Hazardous Seas Warning | EKA | 61 hr | |
| Dec 13, 2:20 PM PST | Small Craft Advisory | MTR | 60 hr | |
| Dec 13, 8:01 PM PST | Coastal Flood Statement | LOX | 24 hr | |
| Dec 14, 2:42 AM PST | Small Craft Advisory | MTR | 48 hr | |
| Dec 14, 3:50 AM PST | Wind Advisory | MFR | Siskiyou | 50 hr |
| Dec 14, 3:51 AM PST | Winter Storm Warning | MFR | Siskiyou | 35 hr |
| Dec 14, 3:51 AM PST | Winter Weather Advisory | MFR | Modoc, Siskiyou | 51 hr |
| Dec 14, 5:15 AM PST | Freezing Fog Advisory | REV | Lassen, Plumas, Sierra | 6 hr |
| Dec 14, 8:59 AM PST | Hazardous Seas Watch | EKA | 7 hr | |
| Dec 14, 8:59 AM PST | Hazardous Seas Warning | EKA | 40 hr | |
| Dec 14, 2:37 PM PST | Winter Storm Warning | STO | 25 hr | |
| Dec 14, 2:37 PM PST | Winter Weather Advisory | STO | 37 hr | |
| Dec 14, 2:54 PM PST | Freezing Fog Advisory | REV | Lassen, Plumas, Sierra | 16 hr |
| Dec 14, 8:53 PM PST | Small Craft Advisory for Hazardous Seas | EKA | 6 hr | |
| Dec 16, 2:34 AM PST | Small Craft Advisory for Rough Bar | MTR | 43 hr | |
| Dec 16, 3:03 AM PST | Small Craft Advisory | EKA | 59 hr | |
| Dec 16, 8:42 AM PST | Small Craft Advisory | LOX | 54 hr | |
| Dec 16, 10:32 AM PST | Small Craft Advisory for Hazardous Seas | LOX | 52 hr | |
| Dec 16, 11:08 AM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 27 hr |
| Dec 16, 12:04 PM PST | High Surf Advisory | SGX | San Diego | 51 hr |
| Dec 16, 2:29 PM PST | High Surf Advisory | LOX | 48 hr | |
| Dec 16, 9:24 PM PST | Wind Advisory | LOX | 42 hr | |
| Dec 17, 2:20 AM PST | Small Craft Advisory for Hazardous Seas | MTR | 12 hr | |
| Dec 17, 5:11 AM PST | Dense Fog Advisory | STO | 5 hr | |
| Dec 17, 1:48 PM PST | Dense Fog Advisory | HNX | 14 hr | |
| Dec 17, 2:38 PM PST | Dense Fog Advisory | STO | 19 hr | |
| Dec 18, 2:53 AM PST | Small Craft Advisory for Rough Bar | MTR | 6 hr | |
| Dec 18, 2:54 PM PST | Freezing Fog Advisory | REV | Lassen, Plumas, Sierra | 19 hr |
| Dec 18, 10:32 PM PST | Wind Advisory | LOX | Los Angeles | 16 hr |
| Dec 19, 2:17 AM PST | Small Craft Advisory | EKA | 5 days | |
| Dec 19, 2:51 AM PST | Small Craft Advisory | LOX | 9 hr | |
| Dec 19, 3:08 PM PST | Freezing Fog Advisory | REV | Lassen, Plumas, Sierra | 19 hr |
| Dec 20, 2:47 PM PST | Gale Watch | MTR | 12 hr | |
| Dec 20, 2:47 PM PST | Small Craft Advisory | MTR | 65 hr | |
| Dec 20, 3:03 PM PST | Gale Watch | LOX | 30 hr | |
| Dec 20, 3:10 PM PST | Winter Weather Advisory | STO | 37 hr | |
| Dec 20, 3:29 PM PST | Winter Weather Advisory | REV | Alpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more | 42 hr |
| Dec 21, 2:21 AM PST | Gale Warning | MTR | 12 hr | |
| Dec 21, 2:48 AM PST | Small Craft Advisory for Hazardous Seas | LOX | 6 hr | |
| Dec 21, 3:08 AM PST | High Wind Watch | HNX | 20 hr | |
| Dec 21, 3:15 AM PST | Winter Weather Advisory | MFR | Modoc, Siskiyou | 36 hr |
| Dec 21, 3:40 AM PST | High Wind Watch | LOX | Los Angeles | 18 hr |
| Dec 21, 3:48 AM PST | High Wind Watch | SGX | Riverside, San Bernardino, San Diego | 23 hr |
| Dec 21, 4:12 AM PST | High Wind Watch | VEF | Inyo, San Bernardino | 21 hr |
| Dec 21, 6:34 AM PST | Coastal Flood Statement | LOX | Los Angeles | 44 hr |
| Dec 21, 9:14 AM PST | Small Craft Advisory | LOX | 21 hr | |
| Dec 21, 1:31 PM PST | Small Craft Advisory | SGX | 36 hr | |
| Dec 21, 2:00 PM PST | Freeze Watch | HNX | 21 hr | |
| Dec 21, 2:00 PM PST | Freeze Watch | HNX | 21 hr | |
| Dec 21, 2:07 PM PST | Wind Advisory | PSR | 33 hr | |
| Dec 21, 2:59 PM PST | Wind Advisory | VEF | Inyo, San Bernardino | 33 hr |
| Dec 21, 4:37 PM PST | Special Weather Statement | STO | Tehama | 53 min |
| Dec 21, 4:42 PM PST | Special Weather Statement | STO | Butte | 63 min |
| Dec 21, 6:04 PM PST | Special Weather Statement | STO | Tehama | 71 min |
| Dec 21, 8:36 PM PST | Gale Warning | LOX | 30 hr | |
| Dec 21, 9:17 PM PST | High Wind Warning | LOX | Los Angeles | 30 hr |
| Dec 21, 11:31 PM PST | High Wind Warning | HNX | 21 hr | |
| Dec 22, 2:48 AM PST | Gale Warning | MTR | 17 hr | |
| Dec 22, 2:48 AM PST | Small Craft Advisory for Rough Bar | MTR | 17 hr | |
| Dec 22, 2:56 AM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 10 hr |
| Dec 22, 2:56 AM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 10 hr |
| Dec 22, 3:50 AM PST | Wind Advisory | LOX | Los Angeles, Santa Barbara | 35 hr |
| Dec 22, 4:13 AM PST | High Wind Warning | VEF | San Bernardino | 20 hr |
| Dec 22, 6:12 AM PST | Gale Warning | SGX | 20 hr | |
| Dec 22, 11:09 AM PST | Freeze Warning | HNX | 10 hr | |
| Dec 22, 11:09 AM PST | Freeze Warning | HNX | 45 hr | |
| Dec 22, 11:11 AM PST | High Surf Advisory | LOX | 22 hr | |
| Dec 22, 11:28 AM PST | Dust Storm Warning | PSR | 5 hr | |
| Dec 22, 1:14 PM PST | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 8 hr |
| Dec 22, 1:55 PM PST | Frost Advisory | LOX | 19 hr | |
| Dec 22, 4:36 PM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 4 hr |
| Dec 22, 8:45 PM PST | Wind Advisory | HNX | 4 hr | |
| Dec 22, 9:13 PM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 13 hr |
| Dec 23, 1:45 AM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 7 hr |
| Dec 23, 1:45 AM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 31 hr |
| Dec 23, 2:37 AM PST | Small Craft Advisory | LOX | 24 hr | |
| Dec 23, 11:39 AM PST | Frost Advisory | LOX | 21 hr | |
| Dec 23, 2:27 PM PST | Small Craft Advisory for Hazardous Seas | LOX | 7 hr | |
| Dec 24, 2:40 PM PST | Frost Advisory | LOX | 18 hr | |
| Dec 25, 2:43 AM PST | Small Craft Advisory | EKA | 12 hr | |
| Dec 25, 2:20 PM PST | Small Craft Advisory for Winds | EKA | 12 hr | |
| Dec 25, 2:20 PM PST | Small Craft Advisory for Hazardous Seas | EKA | 3 days | |
| Dec 25, 2:46 PM PST | Small Craft Advisory | MTR | 47 hr | |
| Dec 26, 2:32 AM PST | Small Craft Advisory for Hazardous Seas | LOX | 3 days | |
| Dec 26, 2:39 AM PST | Small Craft Advisory | EKA | 11 hr | |
| Dec 26, 5:45 AM PST | Dense Fog Advisory | LOX | Los Angeles | 3 hr |
| Dec 26, 8:49 AM PST | Small Craft Advisory for Rough Bar | MTR | 58 hr | |
| Dec 26, 9:59 AM PST | Small Craft Advisory for Winds | LOX | 4 hr | |
| Dec 26, 1:28 PM PST | High Surf Advisory | SGX | San Diego | 55 hr |
| Dec 26, 2:05 PM PST | Small Craft Advisory for Winds | EKA | 26 hr | |
| Dec 26, 2:23 PM PST | High Surf Advisory | LOX | 55 hr | |
| Dec 26, 2:52 PM PST | Small Craft Advisory for Hazardous Seas | MTR | 23 hr | |
| Dec 26, 7:18 PM PST | Special Marine Warning | MTR | 36 min | |
| Dec 27, 1:50 PM PST | Gale Watch | EKA | 25 hr | |
| Dec 27, 2:33 PM PST | Winter Storm Watch | MFR | Siskiyou | 25 hr |
| Dec 27, 7:31 PM PST | Small Craft Advisory for Hazardous Seas | SGX | 5 hr | |
| Dec 28, 8:42 AM PST | Dense Fog Advisory | STO | 3 hr | |
| Dec 28, 2:32 PM PST | High Wind Watch | VEF | Inyo | 25 hr |
| Dec 28, 2:48 PM PST | Gale Warning | EKA | 27 hr | |
| Dec 28, 2:48 PM PST | Small Craft Advisory | EKA | 13 hr | |
| Dec 28, 3:08 PM PST | Winter Weather Advisory | MFR | Siskiyou | 37 hr |
| Dec 29, 2:09 AM PST | Small Craft Advisory | MTR | 22 hr | |
| Dec 29, 2:46 AM PST | Winter Storm Warning | MFR | Siskiyou | 18 hr |
| Dec 29, 3:09 AM PST | Winter Weather Advisory | HNX | 33 hr | |
| Dec 29, 3:26 AM PST | Gale Watch | EKA | 23 hr | |
| Dec 29, 3:26 AM PST | Small Craft Advisory for Winds | EKA | 21 hr | |
| Dec 29, 3:26 AM PST | Small Craft Advisory for Hazardous Seas | EKA | 23 hr | |
| Dec 29, 3:45 AM PST | Winter Weather Advisory | STO | 34 hr | |
| Dec 29, 3:50 AM PST | Dense Fog Advisory | STO | 9 hr | |
| Dec 29, 2:06 PM PST | Gale Warning | EKA | 54 hr | |
| Dec 29, 2:06 PM PST | Hazardous Seas Warning | EKA | 62 hr | |
| Dec 29, 2:52 PM PST | Winter Weather Advisory | REV | Alpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more | 19 hr |
| Dec 29, 3:07 PM PST | Wind Advisory | REV | Mono | 19 hr |
| Dec 29, 10:24 PM PST | Winter Weather Advisory | MFR | Siskiyou | 6 hr |
| Dec 30, 2:30 AM PST | Small Craft Advisory for Winds | EKA | 55 hr | |
| Dec 30, 2:30 AM PST | Small Craft Advisory for Hazardous Seas | EKA | 4 days | |
| Dec 30, 2:38 AM PST | Small Craft Advisory | MTR | 51 hr | |
| Dec 30, 3:59 AM PST | High Wind Warning | MFR | Siskiyou | 39 hr |
| Dec 30, 4:00 AM PST | Winter Storm Warning | MFR | Siskiyou | 32 hr |
| Dec 30, 12:53 PM PST | Wind Advisory | MFR | Modoc, Siskiyou | 15 hr |
| Dec 30, 1:30 PM PST | Winter Weather Advisory | MFR | Modoc, Siskiyou | 23 hr |
| Dec 30, 1:38 PM PST | Wind Advisory | EKA | 24 hr | |
| Dec 30, 1:54 PM PST | Winter Weather Advisory | EKA | 18 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County31
- Los Angeles County22
- San Diego County20
- Riverside County19
- Siskiyou County15
- Inyo County11
- Lassen County11
- Plumas County11
- Sierra County11
- Alpine County9
- El Dorado County9
- Nevada County9
- Placer County9
- Mono County8
- Marin County7
- Monterey County7
- Sonoma County7
- Modoc County7
- Orange County7
- Santa Clara County6
- Santa Barbara County6
- Alameda County5
- Contra Costa County5
- Napa County4
- San Benito County4
- San Mateo County4
- Santa Cruz County4
- San Luis Obispo County4
- Kern County2
- Tehama County2
- Amador County1
- Calaveras County1
- Mariposa County1
- Tuolumne County1
- Imperial County1
- Fresno County1
- Ventura County1
- City and County of San Francisco1
- Butte County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.