Alert archive / California / Winter Storm Warnings

Winter Storm Warnings in California, 2020

43 winter storm warnings in 2020. 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 2020. Tap one for its archive.

Winter Storm Warnings
43
Busiest month
April10 winter storm warnings
Busiest day
January 14, 20205 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.

IssuedProductOfficeCountiesLasted
Jan 14, 12:12 PM PSTWinter Storm WarningHNX62 hr
Jan 14, 1:33 PM PSTWinter Storm WarningREVAlpine, El Dorado, Mono, Nevada, Placer55 hr
Jan 14, 2:00 PM PSTWinter Storm WarningMFRSiskiyou49 hr
Jan 14, 2:18 PM PSTWinter Storm WarningSTO64 hr
Jan 14, 2:26 PM PSTWinter Storm WarningEKADel Norte, Humboldt, Mendocino, Trinity50 hr
Jan 20, 2:29 AM PSTWinter Storm WarningMFRSiskiyou36 hr
Jan 20, 4:28 AM PSTWinter Storm WarningEKA35 hr
Feb 9, 3:47 AM PSTWinter Storm WarningLOX30 hr
Feb 9, 4:07 AM PSTWinter Storm WarningSGXSan Bernardino23 hr
Mar 13, 2:13 AM PDTWinter Storm WarningEKADel Norte, Humboldt, Lake, Mendocino, Trinity66 hr
Mar 13, 4:54 AM PDTWinter Storm WarningREVAlpine, El Dorado, Lassen, Nevada, Placer, Plumas and 1 more3 days
Mar 13, 9:18 AM PDTWinter Storm WarningSTO4 days
Mar 13, 12:53 PM PDTWinter Storm WarningMFRSiskiyou55 hr
Mar 14, 2:47 AM PDTWinter Storm WarningHNX3 days
Mar 15, 10:11 PM PDTWinter Storm WarningSTO5 hr
Mar 16, 2:20 AM PDTWinter Storm WarningSGXSan Bernardino24 hr
Mar 16, 2:50 AM PDTWinter Storm WarningLOX20 hr
Mar 16, 3:56 AM PDTWinter Storm WarningMFRModoc, Siskiyou55 hr
Apr 3, 1:58 PM PDTWinter Storm WarningMFRSiskiyou47 hr
Apr 3, 2:16 PM PDTWinter Storm WarningSTO67 hr
Apr 3, 2:22 PM PDTWinter Storm WarningEKATrinity60 hr
Apr 3, 3:32 PM PDTWinter Storm WarningREVAlpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more68 hr
Apr 4, 3:00 AM PDTWinter Storm WarningHNX68 hr
Apr 4, 4:52 AM PDTWinter Storm WarningVEFInyo5 days
Apr 5, 3:04 AM PDTWinter Storm WarningLOX39 hr
Apr 5, 3:28 AM PDTWinter Storm WarningSGXRiverside, San Bernardino6 days
Apr 6, 6:12 PM PDTWinter Storm WarningLOX4 days
Apr 7, 2:39 AM PDTWinter Storm WarningHNX3 days
May 16, 1:07 PM PDTWinter Storm WarningHNX64 hr
May 17, 3:40 AM PDTWinter Storm WarningSTO46 hr
Nov 5, 3:14 PM PSTWinter Storm WarningSTO3 days
Nov 6, 1:24 AM PSTWinter Storm WarningHNX68 hr
Nov 6, 12:46 PM PSTWinter Storm WarningSGXRiverside, San Bernardino57 hr
Nov 12, 3:13 AM PSTWinter Storm WarningMFRSiskiyou49 hr
Nov 16, 2:30 AM PSTWinter Storm WarningSTO64 hr
Nov 16, 3:02 PM PSTWinter Storm WarningREVAlpine, El Dorado, Nevada, Placer51 hr
Dec 12, 9:17 AM PSTWinter Storm WarningSTO42 hr
Dec 24, 2:01 AM PSTWinter Storm WarningMFRSiskiyou51 hr
Dec 24, 2:30 AM PSTWinter Storm WarningSTO59 hr
Dec 24, 3:11 AM PSTWinter Storm WarningEKATrinity48 hr
Dec 27, 2:20 AM PSTWinter Storm WarningHNX34 hr
Dec 27, 3:08 AM PSTWinter Storm WarningSGXRiverside, San Bernardino, San Diego48 hr
Dec 27, 3:30 AM PSTWinter Storm WarningLOX41 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.

  1. January 14, 20205winter storm warnings
  2. March 13, 20204winter storm warnings
  3. March 16, 20204winter storm warnings
  4. April 3, 20204winter storm warnings
  5. December 24, 20203winter storm warnings
  6. December 27, 20203winter storm warnings
  7. January 20, 20202winter storm warnings
  8. February 9, 20202winter storm warnings
  9. April 4, 20202winter storm warnings
  10. April 5, 20202winter storm warnings
  11. April 7, 20202winter storm warnings
  12. November 6, 20202winter storm warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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.