Alert archive / California / Winter Storm Warnings
Winter Storm Warnings in California, 2017
75 winter storm warnings in 2017. 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 storm warnings reaches back to 2005.
Winter Storm Warnings by county
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Winter Storm Warnings
- 75
- Busiest month
- January39 winter storm warnings
- Busiest day
- January 2, 20175 winter storm warnings
Over time
By month
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 |
|---|---|---|---|---|
| Dec 31, 6:44 PM PST | Winter Storm Warning | HNX | 5 hr | |
| Jan 1, 11:07 AM PST | Winter Storm Warning | EKA | Del Norte, Humboldt, Mendocino, Trinity | 64 hr |
| Jan 2, 12:31 AM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Modoc, Nevada, Placer and 2 more | 3 days |
| Jan 2, 4:10 AM PST | Winter Storm Warning | STO | 72 hr | |
| Jan 2, 6:24 AM PST | Winter Storm Warning | REV | Mono | 3 days |
| Jan 2, 1:09 PM PST | Winter Storm Warning | HNX | 69 hr | |
| Jan 2, 1:36 PM PST | Winter Storm Warning | MFR | Modoc, Siskiyou | 49 hr |
| Jan 6, 12:36 PM PST | Winter Storm Warning | EKA | Del Norte, Humboldt, Mendocino, Trinity | 23 hr |
| Jan 6, 2:50 PM PST | Winter Storm Warning | MFR | Modoc, Siskiyou | 31 hr |
| Jan 8, 2:11 PM PST | Winter Storm Warning | MFR | Modoc, Siskiyou | 62 hr |
| Jan 8, 2:54 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 4 days |
| Jan 8, 3:23 PM PST | Winter Storm Warning | STO | 4 days | |
| Jan 9, 3:33 AM PST | Winter Storm Warning | HNX | 4 days | |
| Jan 9, 2:35 PM PST | Winter Storm Warning | VEF | Inyo | 47 hr |
| Jan 10, 2:34 AM PST | Winter Storm Warning | REV | Alpine, El Dorado, Mono, Nevada, Placer | 67 hr |
| Jan 10, 3:35 AM PST | Winter Storm Warning | STO | 60 hr | |
| Jan 11, 1:07 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 33 hr |
| Jan 17, 3:34 AM PST | Winter Storm Warning | HNX | 56 hr | |
| Jan 17, 3:35 AM PST | Winter Storm Warning | MFR | Siskiyou | 45 hr |
| Jan 17, 2:31 PM PST | Winter Storm Warning | EKA | 37 hr | |
| Jan 17, 3:01 PM PST | Winter Storm Warning | STO | 37 hr | |
| Jan 18, 4:03 AM PST | Winter Storm Warning | VEF | Inyo | 3 days |
| Jan 18, 1:31 PM PST | Winter Storm Warning | SGX | Riverside, San Bernardino, San Diego | 64 hr |
| Jan 18, 2:46 PM PST | Winter Storm Warning | LOX | 60 hr | |
| Jan 19, 3:07 AM PST | Winter Storm Warning | MFR | Siskiyou | 37 hr |
| Jan 19, 4:18 AM PST | Winter Storm Warning | STO | 4 days | |
| Jan 19, 10:21 AM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Modoc, Mono, Nevada and 3 more | 4 days |
| Jan 19, 11:17 AM PST | Winter Storm Warning | HNX | 47 hr | |
| Jan 19, 2:00 PM PST | Winter Storm Warning | EKA | Trinity | 22 hr |
| Jan 20, 4:35 AM PST | Winter Storm Warning | VEF | Inyo | 3 days |
| Jan 20, 2:45 PM PST | Winter Storm Warning | MFR | Modoc, Siskiyou | 48 hr |
| Jan 21, 4:04 AM PST | Winter Storm Warning | HNX | 64 hr | |
| Jan 21, 5:02 AM PST | Winter Storm Warning | SGX | Riverside, San Bernardino, San Diego | 65 hr |
| Jan 21, 9:58 AM PST | Winter Storm Warning | LOX | 56 hr | |
| Jan 21, 2:32 PM PST | Winter Storm Warning | EKA | Trinity | 21 hr |
| Jan 22, 5:51 PM PST | Winter Storm Warning | MFR | Siskiyou | 4 hr |
| Jan 31, 11:37 AM PST | Winter Storm Warning | STO | 47 hr | |
| Jan 31, 1:31 PM PST | Winter Storm Warning | HNX | 3 days | |
| Jan 31, 2:01 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Mono, Nevada, Placer | 4 days |
| Feb 2, 10:44 AM PST | Winter Storm Warning | STO | 41 hr | |
| Feb 5, 3:30 AM PST | Winter Storm Warning | STO | 53 hr | |
| Feb 5, 3:57 AM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 48 hr |
| Feb 5, 4:26 AM PST | Winter Storm Warning | HNX | 32 hr | |
| Feb 6, 1:52 PM PST | Winter Storm Warning | MFR | Modoc, Siskiyou | 20 hr |
| Feb 8, 12:50 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Mono, Nevada, Placer | 61 hr |
| Feb 8, 2:52 PM PST | Winter Storm Warning | STO | 14 hr | |
| Feb 16, 3:50 AM PST | Winter Storm Warning | HNX | 48 hr | |
| Feb 16, 9:16 AM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 46 hr |
| Feb 16, 1:24 PM PST | Winter Storm Warning | LOX | 41 hr | |
| Feb 16, 1:53 PM PST | Winter Storm Warning | VEF | Inyo | 52 hr |
| Feb 18, 3:41 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Mono, Nevada, Placer | 4 days |
| Feb 19, 4:08 AM PST | Winter Storm Warning | STO | 3 days | |
| Feb 19, 4:58 AM PST | Winter Storm Warning | HNX | 65 hr | |
| Feb 19, 1:48 PM PST | Winter Storm Warning | MFR | Siskiyou | 44 hr |
| Feb 23, 2:09 PM PST | Winter Storm Warning | MFR | Siskiyou | 35 hr |
| Mar 3, 8:48 AM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 3 days |
| Mar 3, 12:46 PM PST | Winter Storm Warning | STO | 3 days | |
| Mar 3, 1:14 PM PST | Winter Storm Warning | HNX | 57 hr | |
| Mar 3, 4:17 PM PST | Winter Storm Warning | EKA | Del Norte, Humboldt, Mendocino, Trinity | 72 hr |
| Mar 5, 3:53 AM PST | Winter Storm Warning | MFR | Siskiyou | 36 hr |
| Mar 23, 2:05 PM PDT | Winter Storm Warning | STO | 32 hr | |
| Apr 6, 3:30 AM PDT | Winter Storm Warning | STO | 59 hr | |
| Apr 6, 11:11 AM PDT | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 52 hr |
| Apr 6, 11:30 AM PDT | Winter Storm Warning | HNX | 48 hr | |
| Apr 6, 2:26 PM PDT | Winter Storm Warning | MFR | Siskiyou | 38 hr |
| Nov 2, 2:12 PM PDT | Winter Storm Warning | REV | Alpine, El Dorado, Nevada, Placer | 48 hr |
| Nov 2, 2:37 PM PDT | Winter Storm Warning | STO | 48 hr | |
| Nov 3, 3:23 AM PDT | Winter Storm Warning | HNX | 41 hr | |
| Nov 14, 1:49 PM PST | Winter Storm Warning | HNX | 65 hr | |
| Nov 14, 2:09 PM PST | Winter Storm Warning | MFR | Siskiyou | 32 hr |
| Nov 14, 2:23 PM PST | Winter Storm Warning | STO | 62 hr | |
| Nov 14, 2:48 PM PST | Winter Storm Warning | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 61 hr |
| Nov 15, 10:14 PM PST | Winter Storm Warning | MFR | Siskiyou | 33 hr |
| Nov 16, 3:20 PM PST | Winter Storm Warning | EKA | Del Norte, Humboldt | 90 min |
| Dec 18, 3:58 PM PST | Winter Storm Warning | MFR | Siskiyou | 41 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.