Alert archive / California / 2021
Weather alerts in California, December 2021
456 weather alerts in December 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 December 2021. Tap one for its archive.
- Alerts
- 456
- Warnings
- 98
- Watches
- 75
- Advisories
- 269
- Busiest day
- December 14, 202146 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, 5:20 PM PST | Dense Fog Advisory | LOX | 17 hr | |
| Dec 1, 2:05 AM PST | Dense Fog Advisory | STO | 8 hr | |
| Dec 1, 2:34 AM PST | Wind Advisory | LOX | 6 hr | |
| Dec 1, 5:15 AM PST | Dense Fog Advisory | SGX | Orange, San Diego | 4 hr |
| Dec 1, 1:37 PM PST | Dense Fog Advisory | SGX | Orange, San Diego | 20 hr |
| Dec 1, 1:54 PM PST | Dense Fog Advisory | LOX | Los Angeles | 20 hr |
| Dec 2, 2:05 AM PST | Dense Fog Advisory | STO | 8 hr | |
| Dec 2, 12:37 PM PST | Coastal Flood Advisory | MTR | Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 2 more | 3 days |
| Dec 2, 1:55 PM PST | Beach Hazards Statement | LOX | 68 hr | |
| Dec 2, 2:47 PM PST | Frost Advisory | EKA | Mendocino | 18 hr |
| Dec 2, 9:17 PM PST | Small Craft Advisory | EKA | 7 hr | |
| Dec 2, 11:27 PM PST | Dense Fog Advisory | STO | 11 hr | |
| Dec 3, 2:20 AM PST | Dense Fog Advisory | HNX | Fresno, Madera, Merced, Tulare | 9 hr |
| Dec 3, 2:37 AM PST | Small Craft Advisory | LOX | 4 days | |
| Dec 3, 4:03 AM PST | Coastal Flood Advisory | EKA | Humboldt | 7 hr |
| Dec 3, 12:47 PM PST | Small Craft Advisory | MTR | 4 days | |
| Dec 3, 2:30 PM PST | Coastal Flood Advisory | EKA | Humboldt | 22 hr |
| Dec 3, 5:34 PM PST | Dense Fog Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 15 hr |
| Dec 3, 7:04 PM PST | Dense Fog Advisory | STO | 17 hr | |
| Dec 3, 8:53 PM PST | Small Craft Advisory | EKA | 6 hr | |
| Dec 3, 10:39 PM PST | Dense Fog Advisory | HNX | Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more | 12 hr |
| Dec 4, 2:53 AM PST | Small Craft Advisory | EKA | 60 hr | |
| Dec 4, 2:08 PM PST | Frost Advisory | EKA | Humboldt, Mendocino | 19 hr |
| Dec 4, 2:11 PM PST | Coastal Flood Advisory | EKA | Humboldt | 23 hr |
| Dec 4, 6:23 PM PST | Wind Advisory | LOX | 15 hr | |
| Dec 4, 6:31 PM PST | Dense Fog Advisory | SGX | Riverside, San Bernardino, San Diego | 14 hr |
| Dec 4, 11:10 PM PST | Dense Fog Advisory | STO | 11 hr | |
| Dec 5, 1:12 AM PST | Dense Fog Advisory | HNX | Fresno, Kern, Kings, Tulare | 8 hr |
| Dec 5, 2:59 AM PST | Dense Fog Advisory | LOX | Los Angeles | 6 hr |
| Dec 5, 7:06 AM PST | Dense Fog Advisory | MTR | Marin, Monterey, Napa, San Benito, Sonoma | 3 hr |
| Dec 5, 2:19 PM PST | Wind Advisory | LOX | 13 hr | |
| Dec 6, 12:18 AM PST | Dense Fog Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 1 more | 10 hr |
| Dec 6, 2:08 PM PST | Winter Storm Watch | STO | 23 hr | |
| Dec 6, 3:12 PM PST | Winter Storm Watch | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 23 hr |
| Dec 7, 4:03 AM PST | Small Craft Advisory | MTR | 11 hr | |
| Dec 7, 12:33 PM PST | Winter Weather Advisory | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 50 hr |
| Dec 7, 1:16 PM PST | Winter Weather Advisory | STO | 46 hr | |
| Dec 7, 2:16 PM PST | Winter Weather Advisory | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 45 hr |
| Dec 7, 2:30 PM PST | Small Craft Advisory | EKA | 4 days | |
| Dec 7, 2:39 PM PST | Gale Watch | LOX | 24 hr | |
| Dec 7, 2:50 PM PST | Small Craft Advisory | MTR | 3 days | |
| Dec 7, 10:12 PM PST | Dense Fog Advisory | MFR | Siskiyou | 10 hr |
| Dec 8, 2:39 AM PST | Freeze Watch | EKA | Del Norte, Humboldt, Mendocino | 25 hr |
| Dec 8, 2:42 AM PST | Small Craft Advisory | LOX | 54 hr | |
| Dec 8, 2:45 AM PST | Wind Advisory | VEF | San Bernardino | 37 hr |
| Dec 8, 2:51 AM PST | Wind Advisory | LOX | 48 hr | |
| Dec 8, 4:42 AM PST | Dense Fog Advisory | LOX | 4 hr | |
| Dec 8, 4:46 AM PST | Gale Watch | MTR | 9 hr | |
| Dec 8, 5:10 AM PST | Dense Fog Advisory | HNX | Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more | 5 hr |
| Dec 8, 10:24 AM PST | Freeze Watch | HNX | Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more | 40 hr |
| Dec 8, 10:24 AM PST | Hard Freeze Watch | HNX | Kern | 40 hr |
| Dec 8, 11:50 AM PST | Small Craft Advisory | SGX | 39 hr | |
| Dec 8, 1:30 PM PST | Gale Warning | MTR | 38 hr | |
| Dec 8, 2:10 PM PST | Gale Warning | LOX | 37 hr | |
| Dec 9, 12:06 AM PST | Freeze Watch | VEF | San Bernardino | 25 hr |
| Dec 9, 1:54 AM PST | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 14 hr |
| Dec 9, 2:45 AM PST | Frost Advisory | STO | 31 hr | |
| Dec 9, 3:23 AM PST | Freeze Warning | EKA | Humboldt, Mendocino | 30 hr |
| Dec 9, 11:57 AM PST | Hard Freeze Watch | HNX | Kern | 45 hr |
| Dec 9, 12:34 PM PST | Wind Advisory | HNX | Kern | 11 hr |
| Dec 9, 12:48 PM PST | Freeze Watch | LOX | Santa Barbara | 14 hr |
| Dec 9, 12:48 PM PST | Hard Freeze Watch | LOX | 14 hr | |
| Dec 9, 12:54 PM PST | Frost Advisory | EKA | Del Norte, Humboldt | 20 hr |
| Dec 9, 12:54 PM PST | Freeze Watch | PSR | Imperial, Riverside, San Bernardino | 12 hr |
| Dec 9, 1:38 PM PST | Winter Storm Watch | STO | 25 hr | |
| Dec 9, 1:41 PM PST | Winter Storm Watch | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 37 hr |
| Dec 9, 2:13 PM PST | Winter Storm Watch | EKA | Humboldt, Trinity | 63 hr |
| Dec 9, 2:17 PM PST | High Wind Watch | MFR | Modoc | 14 hr |
| Dec 9, 2:32 PM PST | Gale Watch | EKA | 13 hr | |
| Dec 9, 3:10 PM PST | Winter Storm Watch | MFR | Siskiyou | 38 hr |
| Dec 9, 5:31 PM PST | Wind Advisory | EKA | Del Norte, Humboldt | 52 hr |
| Dec 10, 1:05 AM PST | Freeze Warning | VEF | San Bernardino | 31 hr |
| Dec 10, 1:13 AM PST | Freeze Warning | PSR | Imperial, Riverside, San Bernardino | 31 hr |
| Dec 10, 2:00 AM PST | Freeze Warning | HNX | Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more | 31 hr |
| Dec 10, 2:00 AM PST | Hard Freeze Warning | HNX | Kern | 31 hr |
| Dec 10, 2:56 AM PST | Small Craft Advisory | LOX | 18 hr | |
| Dec 10, 3:03 AM PST | Gale Warning | EKA | 46 hr | |
| Dec 10, 3:03 AM PST | Small Craft Advisory | EKA | 36 hr | |
| Dec 10, 3:08 AM PST | Frost Advisory | LOX | Los Angeles | 29 hr |
| Dec 10, 3:08 AM PST | Freeze Warning | LOX | Santa Barbara | 29 hr |
| Dec 10, 3:08 AM PST | Hard Freeze Warning | LOX | 29 hr | |
| Dec 10, 3:35 AM PST | Winter Storm Watch | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 34 hr |
| Dec 10, 3:56 AM PST | High Wind Warning | MFR | Modoc | 54 hr |
| Dec 10, 4:09 AM PST | Freeze Watch | MTR | Monterey | 10 hr |
| Dec 10, 8:42 AM PST | Small Craft Advisory | MTR | 60 hr | |
| Dec 10, 1:32 PM PST | Winter Storm Watch | VEF | Inyo | 36 hr |
| Dec 10, 1:42 PM PST | Freeze Warning | MTR | Marin, Monterey, Napa, San Benito, Sonoma | 18 hr |
| Dec 10, 1:54 PM PST | Winter Storm Warning | EKA | Trinity | 39 hr |
| Dec 10, 2:11 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 4 days |
| Dec 10, 2:33 PM PST | Winter Storm Warning | STO | 4 days | |
| Dec 10, 2:55 PM PST | Wind Advisory | MFR | Modoc, Siskiyou | 43 hr |
| Dec 10, 2:55 PM PST | Small Craft Advisory | MTR | 54 hr | |
| Dec 10, 2:59 PM PST | Freeze Warning | EKA | Humboldt, Lake, Mendocino | 18 hr |
| Dec 10, 3:00 PM PST | Gale Watch | EKA | 4 hr | |
| Dec 10, 3:52 PM PST | Winter Storm Warning | MFR | Modoc, Siskiyou | 4 days |
| Dec 10, 3:52 PM PST | Winter Weather Advisory | MFR | Modoc, Siskiyou | 4 days |
| Dec 11, 2:54 AM PST | Winter Storm Watch | REV | Modoc | 36 hr |
| Dec 11, 8:48 AM PST | Hard Freeze Warning | HNX | Kern | 24 hr |
| Dec 11, 12:22 PM PST | Hard Freeze Warning | LOX | 20 hr | |
| Dec 11, 12:58 PM PST | Wind Advisory | MTR | Alameda, Contra Costa, Monterey, San Benito, City and County of San Francisco, San Mateo and 2 more | 51 hr |
| Dec 11, 1:12 PM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 4 days |
| Dec 11, 1:18 PM PST | Winter Storm Warning | VEF | Inyo | 3 days |
| Dec 11, 1:19 PM PST | Winter Storm Warning | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 3 days |
| Dec 11, 1:23 PM PST | Freeze Warning | PSR | Imperial, Riverside | 19 hr |
| Dec 11, 1:29 PM PST | Gale Warning | MTR | 59 hr | |
| Dec 11, 1:29 PM PST | Small Craft Advisory | MTR | 5 days | |
| Dec 11, 3:16 PM PST | Wind Advisory | STO | 55 hr | |
| Dec 11, 5:35 PM PST | Freeze Warning | MTR | Monterey, San Benito | 14 hr |
| Dec 11, 10:05 PM PST | Gale Warning | EKA | 55 min | |
| Dec 11, 10:53 PM PST | Wind Advisory | EKA | Humboldt | 2 hr |
| Dec 12, 12:51 AM PST | Hazardous Seas Warning | EKA | 8 hr | |
| Dec 12, 1:54 AM PST | Gale Watch | SGX | 15 hr | |
| Dec 12, 2:24 AM PST | Wind Advisory | HNX | Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more | 70 hr |
| Dec 12, 2:37 AM PST | High Wind Watch | LOX | Santa Barbara | 25 hr |
| Dec 12, 3:00 AM PST | High Wind Watch | SGX | San Bernardino, San Diego | 25 hr |
| Dec 12, 3:13 AM PST | Winter Storm Watch | SGX | Riverside, San Bernardino | 25 hr |
| Dec 12, 3:19 AM PST | Winter Storm Watch | LOX | 22 hr | |
| Dec 12, 3:31 AM PST | Gale Watch | LOX | 6 hr | |
| Dec 12, 3:31 AM PST | Small Craft Advisory | LOX | 23 hr | |
| Dec 12, 5:17 AM PST | Winter Storm Warning | EKA | Del Norte, Humboldt, Trinity | 41 hr |
| Dec 12, 8:41 AM PST | Flash Flood Watch | MTR | Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz | 40 hr |
| Dec 12, 9:09 AM PST | Small Craft Advisory | EKA | 70 hr | |
| Dec 12, 9:15 AM PST | Gale Warning | LOX | 60 hr | |
| Dec 12, 9:15 AM PST | Small Craft Advisory | LOX | 40 hr | |
| Dec 12, 11:55 AM PST | High Wind Warning | MTR | Monterey, San Benito | 34 hr |
| Dec 12, 12:02 PM PST | Flash Flood Watch | LOX | Los Angeles | 54 hr |
| Dec 12, 12:30 PM PST | High Wind Watch | HNX | Kern | 14 hr |
| Dec 12, 12:40 PM PST | Winter Storm Watch | HNX | Kern | 26 hr |
| Dec 12, 1:15 PM PST | High Wind Watch | PSR | Imperial | 24 hr |
| Dec 12, 1:15 PM PST | Wind Advisory | PSR | Imperial, Riverside, San Bernardino | 64 hr |
| Dec 12, 2:02 PM PST | Wind Advisory | VEF | Inyo, San Bernardino | 62 hr |
| Dec 12, 3:20 PM PST | Winter Weather Advisory | REV | Modoc | 43 hr |
| Dec 12, 3:49 PM PST | Gale Warning | EKA | 10 hr | |
| Dec 12, 3:49 PM PST | Small Craft Advisory | EKA | 5 hr | |
| Dec 12, 5:03 PM PST | Gale Warning | SGX | 59 hr | |
| Dec 12, 5:27 PM PST | Winter Weather Advisory | EKA | Lake, Mendocino | 35 hr |
| Dec 12, 8:55 PM PST | Wind Advisory | LOX | Los Angeles, Santa Barbara | 54 hr |
| Dec 13, 1:12 AM PST | Winter Storm Warning | LOX | 43 hr | |
| Dec 13, 1:44 AM PST | Hazardous Seas Warning | EKA | 16 hr | |
| Dec 13, 2:08 AM PST | High Wind Warning | HNX | Kern | 26 hr |
| Dec 13, 3:13 AM PST | High Wind Warning | LOX | Santa Barbara | 31 hr |
| Dec 13, 3:50 AM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 44 hr |
| Dec 13, 3:50 AM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 44 hr |
| Dec 13, 3:53 AM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 44 hr |
| Dec 13, 4:29 AM PST | Areal Flood Advisory | MTR | San Mateo, Santa Clara, Santa Cruz | 18 hr |
| Dec 13, 5:31 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, San Mateo, Santa Clara | 7 hr |
| Dec 13, 5:43 AM PST | Beach Hazards Statement | EKA | Del Norte, Humboldt, Mendocino | 28 hr |
| Dec 13, 8:54 AM PST | Special Weather Statement | EKA | Humboldt | 36 min |
| Dec 13, 9:14 AM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo, Santa Clara, Santa Cruz | 3 hr |
| Dec 13, 10:42 AM PST | Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 34 hr |
| Dec 13, 10:45 AM PST | Flash Flood Warning | MTR | San Mateo, Santa Cruz | 60 min |
| Dec 13, 12:00 PM PST | Flood Watch | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 13 hr |
| Dec 13, 12:42 PM PST | High Surf Advisory | LOX | Los Angeles | 49 hr |
| Dec 13, 1:07 PM PST | High Surf Advisory | SGX | Orange, San Diego | 49 hr |
| Dec 13, 1:15 PM PST | High Wind Warning | PSR | Imperial, San Bernardino | 40 hr |
| Dec 13, 1:26 PM PST | Areal Flood Advisory | MTR | San Mateo | 11 hr |
| Dec 13, 1:45 PM PST | Flash Flood Warning | MTR | Monterey | 6 hr |
| Dec 13, 2:21 PM PST | Gale Warning | EKA | 49 hr | |
| Dec 13, 2:25 PM PST | Winter Storm Watch | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 24 hr |
| Dec 13, 2:26 PM PST | Winter Weather Advisory | HNX | Kern | 34 hr |
| Dec 13, 2:42 PM PST | Areal Flood Warning | MTR | Santa Cruz | 4 hr |
| Dec 13, 3:01 PM PST | Mesoscale Discussion | SPC | Alpine, El Dorado, Mono, Nevada, Sierra, Tuolumne | 4 hr |
| Dec 13, 6:05 PM PST | High Wind Watch | EKA | Del Norte | 18 hr |
| Dec 13, 6:05 PM PST | Wind Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 45 hr |
| Dec 13, 6:45 PM PST | Areal Flood Advisory | STO | Amador, Butte, Calaveras, Colusa, El Dorado, Glenn and 13 more | 11 hr |
| Dec 13, 6:56 PM PST | Areal Flood Advisory | LOX | San Luis Obispo | 15 hr |
| Dec 13, 7:32 PM PST | Areal Flood Advisory | MTR | Monterey | 3 hr |
| Dec 13, 7:42 PM PST | Special Marine Warning | MTR | 33 min | |
| Dec 13, 7:51 PM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo | 114 min |
| Dec 13, 8:04 PM PST | Areal Flood Advisory | LOX | Santa Barbara | 15 hr |
| Dec 13, 11:29 PM PST | Winter Storm Warning | STO | 16 hr | |
| Dec 13, 11:44 PM PST | Areal Flood Advisory | MTR | Monterey | 3 hr |
| Dec 14, 1:19 AM PST | Areal Flood Advisory | LOX | Ventura | 6 hr |
| Dec 14, 2:23 AM PST | Blowing Dust Advisory | PSR | Imperial, Riverside | 26 hr |
| Dec 14, 2:42 AM PST | Small Craft Advisory | EKA | 25 hr | |
| Dec 14, 2:42 AM PST | Hazardous Seas Warning | EKA | 6 hr | |
| Dec 14, 2:42 AM PST | Winter Storm Watch | MFR | Siskiyou | 12 hr |
| Dec 14, 3:00 AM PST | Small Craft Advisory | LOX | 3 days | |
| Dec 14, 3:48 AM PST | Winter Storm Watch | STO | 11 hr | |
| Dec 14, 4:09 AM PST | Areal Flood Advisory | LOX | Los Angeles | 6 hr |
| Dec 14, 5:10 AM PST | Winter Storm Watch | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 9 hr |
| Dec 14, 7:34 AM PST | Areal Flood Advisory | SGX | Orange, Riverside | 4 hr |
| Dec 14, 8:09 AM PST | Areal Flood Advisory | SGX | Orange | 4 hr |
| Dec 14, 8:49 AM PST | Areal Flood Advisory | MTR | Monterey | 2 hr |
| Dec 14, 9:23 AM PST | Areal Flood Advisory | SGX | San Bernardino | 4 hr |
| Dec 14, 9:46 AM PST | Wind Advisory | LOX | 10 hr | |
| Dec 14, 10:05 AM PST | Areal Flood Advisory | LOX | Ventura | 4 hr |
| Dec 14, 10:12 AM PST | Areal Flood Advisory | LOX | Los Angeles | 5 hr |
| Dec 14, 10:36 AM PST | Flash Flood Warning | SGX | Orange | 3 hr |
| Dec 14, 11:01 AM PST | Flash Flood Warning | SGX | Orange | 89 min |
| Dec 14, 11:46 AM PST | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Dec 14, 12:16 PM PST | High Wind Warning | EKA | Del Norte | 27 hr |
| Dec 14, 12:34 PM PST | Winter Storm Watch | HNX | Fresno, Madera, Mariposa, Tulare, Tuolumne | 20 hr |
| Dec 14, 1:00 PM PST | Areal Flood Advisory | SGX | Riverside, San Bernardino | 3 hr |
| Dec 14, 1:15 PM PST | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Dec 14, 1:27 PM PST | Flash Flood Warning | SGX | Riverside, San Bernardino | 108 min |
| Dec 14, 1:41 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Nevada, Placer | 44 hr |
| Dec 14, 1:41 PM PST | Winter Weather Advisory | REV | Lassen, Modoc, Mono, Plumas, Sierra | 47 hr |
| Dec 14, 2:12 PM PST | Winter Storm Warning | MFR | Siskiyou | 36 hr |
| Dec 14, 2:12 PM PST | Winter Weather Advisory | MFR | Modoc, Siskiyou | 43 hr |
| Dec 14, 2:15 PM PST | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Dec 14, 2:16 PM PST | High Wind Warning | MFR | Modoc, Siskiyou | 29 hr |
| Dec 14, 2:16 PM PST | Wind Advisory | MFR | Modoc, Siskiyou | 29 hr |
| Dec 14, 2:21 PM PST | Winter Storm Warning | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 32 hr |
| Dec 14, 2:21 PM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 26 hr |
| Dec 14, 2:25 PM PST | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Dec 14, 3:03 PM PST | Small Craft Advisory | MTR | 42 hr | |
| Dec 14, 3:03 PM PST | Winter Storm Warning | STO | 43 hr | |
| Dec 14, 8:24 PM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 13 hr |
| Dec 14, 8:26 PM PST | Frost Advisory | LOX | Los Angeles | 81 min |
| Dec 14, 9:47 PM PST | Frost Advisory | LOX | Los Angeles | 11 hr |
| Dec 14, 9:47 PM PST | Freeze Warning | LOX | Los Angeles | 11 hr |
| Dec 14, 10:17 PM PST | High Surf Advisory | LOX | 16 hr | |
| Dec 15, 1:45 AM PST | Wind Advisory | STO | 20 hr | |
| Dec 15, 8:04 AM PST | Winter Storm Warning | HNX | Fresno, Madera, Mariposa, Tulare, Tuolumne | 29 hr |
| Dec 15, 8:04 AM PST | Winter Weather Advisory | HNX | Mariposa | 26 hr |
| Dec 15, 12:54 PM PST | Hazardous Seas Warning | EKA | 8 hr | |
| Dec 15, 7:14 PM PST | Wind Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, City and County of San Francisco, San Mateo and 3 more | 8 hr |
| Dec 15, 8:34 PM PST | Small Craft Advisory | EKA | 34 hr | |
| Dec 15, 8:47 PM PST | Areal Flood Warning | MTR | Sonoma | 5 hr |
| Dec 15, 9:21 PM PST | Areal Flood Advisory | MTR | Marin, Napa, City and County of San Francisco, Sonoma | 3 hr |
| Dec 15, 10:09 PM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Trinity | 8 hr |
| Dec 15, 10:09 PM PST | Special Marine Warning | MTR | 96 min | |
| Dec 15, 10:09 PM PST | Wind Advisory | STO | 4 hr | |
| Dec 15, 10:43 PM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, Marin, City and County of San Francisco, San Mateo | 2 hr |
| Dec 15, 11:16 PM PST | Special Marine Warning | MTR | 59 min | |
| Dec 16, 2:46 AM PST | Wind Advisory | LOX | Los Angeles | 59 hr |
| Dec 16, 4:21 AM PST | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 29 hr |
| Dec 16, 5:15 AM PST | Small Craft Advisory | EKA | 25 hr | |
| Dec 16, 5:15 AM PST | Hazardous Seas Warning | EKA | 4 hr | |
| Dec 16, 11:37 AM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 48 hr |
| Dec 16, 12:14 PM PST | Lake Wind Advisory | VEF | San Bernardino | 31 hr |
| Dec 17, 1:08 AM PST | Small Craft Advisory | MTR | 8 hr | |
| Dec 17, 2:04 AM PST | Gale Watch | EKA | 24 hr | |
| Dec 17, 3:55 AM PST | High Surf Advisory | LOX | 8 hr | |
| Dec 17, 11:36 AM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 20 hr |
| Dec 17, 2:06 PM PST | Small Craft Advisory | LOX | 21 hr | |
| Dec 17, 8:35 PM PST | Frost Advisory | EKA | Humboldt, Mendocino | 12 hr |
| Dec 18, 12:08 AM PST | Frost Advisory | LOX | 9 hr | |
| Dec 18, 12:08 AM PST | Freeze Warning | LOX | 9 hr | |
| Dec 18, 1:47 AM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 30 hr |
| Dec 18, 2:06 AM PST | Gale Warning | EKA | 67 hr | |
| Dec 18, 2:06 AM PST | Small Craft Advisory | EKA | 4 days | |
| Dec 18, 7:18 AM PST | Dense Fog Advisory | STO | 4 hr | |
| Dec 18, 2:01 PM PST | Small Craft Advisory | MTR | 5 days | |
| Dec 18, 9:56 PM PST | Freezing Fog Advisory | REV | Lassen, Plumas, Sierra | 12 hr |
| Dec 19, 2:28 AM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 30 hr |
| Dec 19, 3:09 AM PST | Gale Watch | MTR | 11 hr | |
| Dec 19, 6:42 AM PST | Dense Fog Advisory | HNX | Fresno, Kern, Kings, Madera, Merced, Tulare | 5 hr |
| Dec 19, 12:58 PM PST | Winter Storm Watch | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 26 hr |
| Dec 19, 12:58 PM PST | Winter Weather Advisory | REV | Alpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more | 4 days |
| Dec 19, 1:08 PM PST | Winter Storm Watch | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 26 hr |
| Dec 19, 2:02 PM PST | Winter Storm Watch | STO | 25 hr | |
| Dec 19, 2:03 PM PST | Winter Weather Advisory | EKA | Trinity | 56 hr |
| Dec 19, 2:07 PM PST | Gale Warning | MTR | 43 hr | |
| Dec 19, 2:44 PM PST | Wind Advisory | MFR | Siskiyou | 19 hr |
| Dec 19, 8:10 PM PST | Dense Fog Advisory | HNX | Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more | 16 hr |
| Dec 19, 11:55 PM PST | Freezing Fog Advisory | REV | Lassen, Plumas, Sierra | 10 hr |
| Dec 20, 12:57 AM PST | Winter Storm Watch | VEF | Inyo | 24 hr |
| Dec 20, 2:24 AM PST | Winter Storm Watch | EKA | 35 hr | |
| Dec 20, 2:41 AM PST | Dense Fog Advisory | LOX | 6 hr | |
| Dec 20, 6:47 AM PST | Winter Storm Watch | MFR | Siskiyou | 21 hr |
| Dec 20, 2:06 PM PST | Small Craft Advisory | LOX | 13 hr | |
| Dec 20, 2:32 PM PST | Hazardous Seas Warning | EKA | 27 hr | |
| Dec 20, 2:35 PM PST | Winter Storm Warning | STO | 7 days | |
| Dec 20, 2:35 PM PST | Winter Weather Advisory | STO | 4 days | |
| Dec 20, 2:59 PM PST | Winter Storm Warning | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 7 days |
| Dec 20, 2:59 PM PST | Winter Weather Advisory | HNX | Fresno, Madera, Mariposa, Tulare, Tuolumne | 49 hr |
| Dec 20, 3:23 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 7 days |
| Dec 20, 9:14 PM PST | Hazardous Seas Warning | EKA | 3 hr | |
| Dec 21, 12:21 AM PST | Gale Warning | EKA | 10 hr | |
| Dec 21, 1:00 AM PST | Winter Storm Warning | VEF | Inyo | 5 days |
| Dec 21, 1:00 AM PST | Winter Weather Advisory | VEF | Inyo | 3 days |
| Dec 21, 3:24 AM PST | Wind Advisory | MFR | Siskiyou | 42 hr |
| Dec 21, 4:11 AM PST | Winter Storm Warning | MFR | Siskiyou | 51 hr |
| Dec 21, 4:11 AM PST | Winter Weather Advisory | MFR | Modoc, Siskiyou | 72 hr |
| Dec 21, 8:41 AM PST | Small Craft Advisory | MTR | 12 hr | |
| Dec 21, 1:40 PM PST | Winter Storm Warning | EKA | 41 hr | |
| Dec 21, 2:37 PM PST | Small Craft Advisory | EKA | 48 hr | |
| Dec 21, 11:22 PM PST | Dense Fog Advisory | HNX | Fresno, Kern, Kings, Tulare | 8 hr |
| Dec 22, 3:20 AM PST | Gale Warning | EKA | 17 hr | |
| Dec 22, 3:20 AM PST | Small Craft Advisory | EKA | 36 hr | |
| Dec 22, 4:32 AM PST | Winter Storm Watch | MFR | Siskiyou | 65 hr |
| Dec 22, 10:15 AM PST | Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 50 hr |
| Dec 22, 2:45 PM PST | Small Craft Advisory | MTR | 18 hr | |
| Dec 22, 2:45 PM PST | Small Craft Advisory | MTR | 6 days | |
| Dec 22, 9:43 PM PST | Small Craft Advisory | LOX | 38 hr | |
| Dec 23, 2:10 AM PST | Winter Storm Watch | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 11 hr |
| Dec 23, 2:57 AM PST | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 39 hr |
| Dec 23, 3:01 AM PST | Winter Weather Advisory | SGX | Riverside, San Bernardino | 19 hr |
| Dec 23, 3:11 AM PST | Small Craft Advisory | EKA | 98 min | |
| Dec 23, 4:34 AM PST | Small Craft Advisory | SGX | 35 hr | |
| Dec 23, 5:38 AM PST | Winter Storm Warning | MFR | Modoc, Siskiyou | 4 days |
| Dec 23, 7:00 AM PST | Areal Flood Advisory | MTR | Marin, Sonoma | 6 hr |
| Dec 23, 7:36 AM PST | Areal Flood Advisory | MTR | San Mateo | 3 hr |
| Dec 23, 8:12 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 1 more | 2 hr |
| Dec 23, 9:13 AM PST | Mesoscale Discussion | SPC | Alpine, Sierra | 6 hr |
| Dec 23, 9:56 AM PST | Areal Flood Advisory | MTR | Monterey, San Benito, Santa Clara, Santa Cruz | 2 hr |
| Dec 23, 10:48 AM PST | Areal Flood Advisory | LOX | San Luis Obispo, Santa Barbara | 5 hr |
| Dec 23, 1:17 PM PST | Winter Storm Warning | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 4 days |
| Dec 23, 2:21 PM PST | Wind Advisory | REV | Modoc | 36 hr |
| Dec 23, 3:03 PM PST | Small Craft Advisory | EKA | 5 days | |
| Dec 23, 3:22 PM PST | Winter Weather Advisory | MFR | Modoc, Siskiyou | 4 days |
| Dec 23, 3:33 PM PST | Areal Flood Advisory | SGX | Riverside, San Bernardino | 3 hr |
| Dec 23, 3:55 PM PST | Wind Advisory | LOX | 16 hr | |
| Dec 23, 5:11 PM PST | Special Weather Statement | STO | Butte | 64 min |
| Dec 23, 5:29 PM PST | Areal Flood Advisory | SGX | Riverside, San Bernardino | 3 hr |
| Dec 23, 5:43 PM PST | Areal Flood Advisory | LOX | Santa Barbara, Ventura | 3 hr |
| Dec 23, 6:06 PM PST | Special Weather Statement | STO | Tehama | 54 min |
| Dec 23, 6:30 PM PST | Areal Flood Advisory | LOX | Los Angeles | 2 hr |
| Dec 23, 8:01 PM PST | Areal Flood Advisory | SGX | Orange | 7 hr |
| Dec 23, 8:20 PM PST | Areal Flood Advisory | SGX | Riverside, San Bernardino | 7 hr |
| Dec 23, 8:34 PM PST | Small Craft Advisory | LOX | 24 hr | |
| Dec 23, 8:53 PM PST | Special Weather Statement | STO | Tuolumne | 52 min |
| Dec 23, 8:54 PM PST | Areal Flood Advisory | LOX | Los Angeles | 4 hr |
| Dec 23, 9:31 PM PST | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Dec 23, 10:03 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 14 hr |
| Dec 24, 1:17 AM PST | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Dec 24, 1:55 AM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo, Santa Clara, Santa Cruz | 95 min |
| Dec 24, 2:26 AM PST | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Dec 24, 2:46 AM PST | Small Craft Advisory | MTR | 4 days | |
| Dec 24, 2:53 AM PST | Gale Warning | EKA | 12 hr | |
| Dec 24, 3:18 AM PST | Winter Storm Watch | HNX | Fresno, Kern, Madera, Mariposa, Tulare | 25 hr |
| Dec 24, 5:09 AM PST | Areal Flood Advisory | HNX | Kern | 111 min |
| Dec 24, 6:14 AM PST | Beach Hazards Statement | SGX | Orange, San Diego | 2 hr |
| Dec 24, 7:07 AM PST | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 2 hr |
| Dec 24, 7:31 AM PST | Areal Flood Advisory | SGX | San Diego | 90 min |
| Dec 24, 7:48 AM PST | Winter Storm Watch | LOX | 14 hr | |
| Dec 24, 10:01 AM PST | Winter Storm Watch | EKA | Del Norte, Humboldt, Mendocino | 43 hr |
| Dec 24, 12:00 PM PST | Winter Storm Watch | SGX | Riverside, San Bernardino | 9 hr |
| Dec 24, 12:37 PM PST | Wind Advisory | PSR | Imperial | 8 hr |
| Dec 24, 2:28 PM PST | High Wind Watch | REV | Modoc | 12 hr |
| Dec 24, 2:38 PM PST | Small Craft Advisory | MTR | 4 days | |
| Dec 24, 9:00 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 32 hr |
| Dec 24, 9:13 PM PST | Small Craft Advisory | LOX | 59 hr | |
| Dec 24, 9:20 PM PST | Winter Storm Warning | LOX | 31 hr | |
| Dec 24, 9:37 PM PST | Wind Advisory | LOX | Santa Barbara | 36 hr |
| Dec 25, 2:13 AM PST | Wind Advisory | REV | Modoc | 44 hr |
| Dec 25, 2:25 AM PST | Small Craft Advisory | SGX | 32 hr | |
| Dec 25, 3:39 AM PST | Winter Weather Advisory | VEF | 24 hr | |
| Dec 25, 3:49 AM PST | Winter Storm Watch | HNX | Fresno, Kern, Madera, Mariposa, Tulare | 23 hr |
| Dec 25, 3:49 AM PST | Winter Weather Advisory | HNX | Fresno, Kern, Madera, Mariposa, Tulare | 28 hr |
| Dec 25, 5:37 AM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Mendocino | 28 hr |
| Dec 25, 8:37 AM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo | 3 hr |
| Dec 25, 8:41 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa | 4 hr |
| Dec 25, 10:10 AM PST | Areal Flood Advisory | MTR | San Mateo, Santa Clara | 2 hr |
| Dec 25, 10:41 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, San Mateo, Santa Clara | 2 hr |
| Dec 25, 10:44 AM PST | Areal Flood Advisory | MTR | Alameda, San Mateo, Santa Clara, Santa Cruz | 2 hr |
| Dec 25, 11:30 AM PST | Areal Flood Advisory | MTR | Alameda, Santa Clara, Santa Cruz | 3 hr |
| Dec 25, 12:15 PM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, Santa Clara | 2 hr |
| Dec 25, 12:48 PM PST | Wind Advisory | PSR | Imperial | 18 hr |
| Dec 25, 1:11 PM PST | Wind Advisory | VEF | Inyo, San Bernardino | 23 hr |
| Dec 25, 1:18 PM PST | Special Weather Statement | STO | Shasta, Tehama | 27 min |
| Dec 25, 1:40 PM PST | Winter Storm Watch | SGX | Riverside, San Bernardino, San Diego | 24 hr |
| Dec 25, 1:40 PM PST | Winter Weather Advisory | SGX | San Diego | 16 hr |
| Dec 25, 2:34 PM PST | Areal Flood Advisory | MTR | Monterey, San Benito, Santa Clara, Santa Cruz | 5 hr |
| Dec 25, 4:48 PM PST | Wind Advisory | HNX | Kern | 16 hr |
| Dec 25, 7:00 PM PST | Areal Flood Advisory | LOX | San Luis Obispo, Santa Barbara | 3 hr |
| Dec 25, 7:24 PM PST | Special Marine Warning | LOX | 51 min | |
| Dec 25, 8:26 PM PST | Special Marine Warning | LOX | 79 min | |
| Dec 25, 9:41 PM PST | Areal Flood Advisory | LOX | Ventura | 2 hr |
| Dec 25, 10:49 PM PST | Areal Flood Advisory | LOX | Los Angeles | 3 hr |
| Dec 26, 12:58 AM PST | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino | 3 hr |
| Dec 26, 2:10 AM PST | Small Craft Advisory | MTR | 49 hr | |
| Dec 26, 2:33 AM PST | Gale Watch | SGX | 11 hr | |
| Dec 26, 2:50 AM PST | Gale Watch | LOX | 12 hr | |
| Dec 26, 3:15 AM PST | Winter Weather Advisory | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 49 hr |
| Dec 26, 3:25 AM PST | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 9 hr |
| Dec 26, 3:58 AM PST | High Surf Advisory | LOX | 10 hr | |
| Dec 26, 3:59 AM PST | Winter Storm Watch | LOX | 10 hr | |
| Dec 26, 4:27 AM PST | Freeze Watch | STO | 31 hr | |
| Dec 26, 4:27 AM PST | Freeze Watch | STO | 23 hr | |
| Dec 26, 4:37 AM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Mendocino | 29 hr |
| Dec 26, 9:06 AM PST | Small Craft Advisory | LOX | 60 hr | |
| Dec 26, 12:03 PM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 32 hr |
| Dec 26, 1:01 PM PST | Wind Advisory | VEF | Inyo, San Bernardino | 37 hr |
| Dec 26, 1:03 PM PST | Winter Storm Warning | VEF | Inyo | 30 hr |
| Dec 26, 1:33 PM PST | Wind Advisory | STO | 10 hr | |
| Dec 26, 1:40 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino, San Diego | 37 hr |
| Dec 26, 1:42 PM PST | Gale Warning | SGX | 30 hr | |
| Dec 26, 2:02 PM PST | Wind Advisory | PSR | Imperial, San Bernardino | 37 hr |
| Dec 26, 2:07 PM PST | Winter Weather Advisory | REV | Modoc | 29 hr |
| Dec 26, 2:19 PM PST | Winter Storm Warning | LOX | 32 hr | |
| Dec 26, 2:25 PM PST | Gale Warning | LOX | 30 hr | |
| Dec 26, 2:50 PM PST | Freeze Watch | EKA | Del Norte, Humboldt, Mendocino | 20 hr |
| Dec 26, 7:27 PM PST | Wind Advisory | LOX | Santa Barbara | 23 hr |
| Dec 27, 2:19 AM PST | Winter Weather Advisory | MFR | Siskiyou | 32 hr |
| Dec 27, 2:35 AM PST | Freeze Watch | LOX | Los Angeles | 12 hr |
| Dec 27, 6:02 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, City and County of San Francisco, San Mateo, Santa Clara, Santa Cruz | 3 hr |
| Dec 27, 6:35 AM PST | Areal Flood Advisory | MTR | Alameda, Monterey, San Benito, Santa Clara, Santa Cruz | 4 hr |
| Dec 27, 8:54 AM PST | Areal Flood Advisory | MTR | Monterey, San Benito | 3 hr |
| Dec 27, 1:55 PM PST | Special Weather Statement | STO | Sacramento | 50 min |
| Dec 27, 2:13 PM PST | Frost Advisory | LOX | Los Angeles | 18 hr |
| Dec 27, 2:22 PM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino, Trinity | 20 hr |
| Dec 27, 3:09 PM PST | Special Weather Statement | STO | Amador | 51 min |
| Dec 27, 7:39 PM PST | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 7 hr |
| Dec 27, 8:03 PM PST | Small Craft Advisory | SGX | 13 hr | |
| Dec 27, 9:07 PM PST | Winter Storm Watch | STO | 6 hr | |
| Dec 27, 9:07 PM PST | Winter Weather Advisory | STO | 6 hr | |
| Dec 27, 9:17 PM PST | Winter Weather Advisory | REV | Alpine, El Dorado, Mono, Nevada, Placer | 49 hr |
| Dec 28, 2:37 AM PST | Winter Storm Watch | LOX | 12 hr | |
| Dec 28, 2:59 AM PST | Small Craft Advisory | MTR | 24 hr | |
| Dec 28, 3:00 AM PST | Small Craft Advisory | LOX | 6 hr | |
| Dec 28, 3:00 AM PST | Winter Storm Watch | SGX | Riverside, San Bernardino, San Diego | 10 hr |
| Dec 28, 3:14 AM PST | Winter Storm Watch | VEF | Inyo | 11 hr |
| Dec 28, 3:33 AM PST | Winter Storm Warning | STO | 42 hr | |
| Dec 28, 3:33 AM PST | Winter Weather Advisory | STO | 32 hr | |
| Dec 28, 3:40 AM PST | Winter Weather Advisory | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 46 hr |
| Dec 28, 11:07 AM PST | Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 48 hr |
| Dec 28, 1:26 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino, San Diego | 55 hr |
| Dec 28, 1:49 PM PST | Winter Storm Warning | VEF | Inyo | 54 hr |
| Dec 28, 1:49 PM PST | Winter Weather Advisory | VEF | San Bernardino | 45 hr |
| Dec 28, 2:14 PM PST | Winter Weather Advisory | EKA | Humboldt, Trinity | 17 hr |
| Dec 28, 2:15 PM PST | Freeze Watch | EKA | Del Norte, Humboldt, Mendocino | 13 hr |
| Dec 28, 2:19 PM PST | Small Craft Advisory | MTR | 37 hr | |
| Dec 28, 2:23 PM PST | Winter Storm Warning | LOX | 54 hr | |
| Dec 28, 2:36 PM PST | Small Craft Advisory | EKA | 48 hr | |
| Dec 28, 7:46 PM PST | Winter Weather Advisory | MFR | Siskiyou | 14 hr |
| Dec 28, 8:52 PM PST | Small Craft Advisory | LOX | 41 hr | |
| Dec 28, 8:52 PM PST | Small Craft Advisory | SGX | 40 hr | |
| Dec 29, 1:33 AM PST | Special Marine Warning | MTR | 27 min | |
| Dec 29, 1:39 AM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo | 2 hr |
| Dec 29, 2:25 AM PST | Wind Advisory | LOX | 20 hr | |
| Dec 29, 3:24 AM PST | Freeze Warning | EKA | Del Norte, Humboldt, Mendocino | 30 hr |
| Dec 29, 3:47 AM PST | Winter Weather Advisory | SGX | San Diego | 23 hr |
| Dec 29, 9:57 AM PST | Areal Flood Advisory | MTR | City and County of San Francisco, San Mateo | 3 hr |
| Dec 29, 1:55 PM PST | Flash Flood Watch | LOX | Los Angeles | 26 hr |
| Dec 29, 2:04 PM PST | Small Craft Advisory | MTR | 67 hr | |
| Dec 29, 2:48 PM PST | Areal Flood Advisory | MTR | Santa Clara, Santa Cruz | 5 hr |
| Dec 29, 3:42 PM PST | Special Weather Statement | MTR | Santa Clara | 33 min |
| Dec 29, 3:43 PM PST | Special Weather Statement | MTR | San Benito | 32 min |
| Dec 29, 4:10 PM PST | Small Craft Advisory | LOX | 11 hr | |
| Dec 29, 5:34 PM PST | Areal Flood Advisory | MTR | Alameda, Santa Clara | 56 min |
| Dec 29, 6:31 PM PST | Areal Flood Advisory | MTR | Alameda, Santa Clara | 89 min |
| Dec 29, 7:49 PM PST | Winter Weather Advisory | MFR | Modoc | 44 hr |
| Dec 29, 11:02 PM PST | Areal Flood Advisory | LOX | Los Angeles, Ventura | 6 hr |
| Dec 30, 2:00 AM PST | Winter Weather Advisory | HNX | Kern, Tulare | 16 hr |
| Dec 30, 2:50 AM PST | Winter Weather Advisory | SGX | Riverside | 9 hr |
| Dec 30, 4:31 AM PST | Special Marine Warning | LOX | 29 min | |
| Dec 30, 4:54 AM PST | Areal Flood Advisory | LOX | Los Angeles, Ventura | 6 hr |
| Dec 30, 4:57 AM PST | Special Marine Warning | LOX | 33 min | |
| Dec 30, 8:11 AM PST | Small Craft Advisory | LOX | 42 hr | |
| Dec 30, 9:06 AM PST | Small Craft Advisory | EKA | 3 hr | |
| Dec 30, 10:47 AM PST | Areal Flood Advisory | LOX | Los Angeles, Ventura | 4 hr |
| Dec 30, 11:45 AM PST | Areal Flood Advisory | HNX | Kern | 4 hr |
| Dec 30, 12:45 PM PST | Small Craft Advisory | SGX | 37 hr | |
| Dec 30, 1:23 PM PST | Coastal Flood Advisory | EKA | Humboldt | 22 hr |
| Dec 30, 2:28 PM PST | Gale Warning | LOX | 36 hr | |
| Dec 30, 2:28 PM PST | Small Craft Advisory | LOX | 36 hr | |
| Dec 30, 2:34 PM PST | Small Craft Advisory | EKA | 36 hr | |
| Dec 30, 4:07 PM PST | Flash Flood Watch | LOX | Los Angeles | 4 hr |
| Dec 30, 8:43 PM PST | Dense Fog Advisory | HNX | Fresno, Kern, Kings, Madera, Merced, Tulare | 10 hr |
| Dec 31, 3:29 AM PST | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 24 hr |
| Dec 31, 7:19 AM PST | Dense Fog Advisory | HNX | Kern | 8 hr |
| Dec 31, 11:37 AM PST | Wind Advisory | LOX | 15 hr | |
| Dec 31, 3:39 PM PST | Wind Advisory | HNX | Kern | 9 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 County53
- Riverside County43
- San Diego County35
- Kern County35
- Humboldt County32
- Tulare County25
- Fresno County24
- San Mateo County23
- Los Angeles County22
- Santa Clara County22
- Mendocino County22
- Madera County22
- Modoc County22
- Del Norte County22
- Mariposa County20
- Siskiyou County20
- Monterey County19
- Orange County17
- Alameda County17
- Santa Cruz County17
- City and County of San Francisco15
- Sierra County14
- San Benito County13
- Tuolumne County13
- Contra Costa County12
- Alpine County12
- El Dorado County12
- Nevada County12
- Plumas County12
- Trinity County12
- Marin County11
- Sonoma County11
- Lassen County11
- Placer County11
- Santa Barbara County11
- Inyo County11
- Kings County10
- Mono County10
- Imperial County10
- Merced County9
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.