Winter Weather Advisories in California
2,400 winter weather advisories since 1986. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of winter weather advisories reaches back to 2005.
Winter Weather Advisories by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Winter Weather Advisories
- 2,400
- Busiest year
- 2010208 winter weather advisories
- Average year
- 109over 22 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Siskiyou County371
- Modoc County307
- Alpine County252
- El Dorado County252
- Nevada County252
- Placer County252
- Plumas County207
- Sierra County207
- Lassen County207
- San Bernardino County195
- Mono County166
- Riverside County146
- Inyo County126
- San Diego County113
- Humboldt County91
- Trinity County89
- Del Norte County80
- Fresno County52
- Mariposa County52
- Madera County51
- Mendocino County48
- Tuolumne County48
- Kern County46
- Tulare County45
- Santa Barbara County44
- Ventura County28
- Monterey County27
- Lake County23
- Santa Clara County22
- Los Angeles County22
- San Benito County20
- San Mateo County19
- Santa Cruz County19
- Orange County16
- San Luis Obispo County7
- Sonoma County5
- Napa County4
- Alameda County3
- Contra Costa County3
- Marin County1
1 more counties
The latest winter weather advisories
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 10:41 AM PDT | Winter Weather Advisory | REV | Alpine, El Dorado, Mono, Nevada, Placer | 49 hr |
| Apr 19, 12:42 PM PDT | Winter Weather Advisory | MFR | Siskiyou | 46 hr |
| Apr 19, 12:25 PM PDT | Winter Weather Advisory | EKA | Trinity | 47 hr |
| Apr 10, 12:25 PM PDT | Winter Weather Advisory | MFR | Siskiyou | 53 hr |
| Apr 10, 12:09 PM PDT | Winter Weather Advisory | EKA | 59 hr | |
| Apr 10, 12:07 PM PDT | Winter Weather Advisory | LOX | Los Angeles, Santa Barbara, Ventura | 3 days |
| Apr 10, 8:21 AM PDT | Winter Weather Advisory | REV | Lassen, Plumas, Sierra | 63 hr |
| Apr 9, 11:32 PM PDT | Winter Weather Advisory | VEF | Inyo | 71 hr |
| Mar 31, 10:13 AM PDT | Winter Weather Advisory | STO | 46 hr | |
| Mar 31, 3:13 AM PDT | Winter Weather Advisory | EKA | 56 hr | |
| Mar 30, 11:39 PM PDT | Winter Weather Advisory | MFR | Modoc, Siskiyou | 59 hr |
| Mar 30, 1:27 PM PDT | Winter Weather Advisory | HNX | Fresno, Madera, Mariposa, Tuolumne | 67 hr |
Nearby
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.