Alert archive / California

Extreme Cold Warnings in California

7 extreme cold warnings 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 extreme cold warnings reaches back to 2005.

Extreme Cold Warnings by county

Each county as a circle sized by its count since 1986. Tap one for its archive.

Extreme Cold Warnings
7
Busiest year
20266 extreme cold warnings
Average year
4over 2 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.

The latest extreme cold warnings

The most recent on file, newest first.

IssuedProductOfficeCountiesLasted
Feb 20, 11:53 AM PSTExtreme Cold WarningMTRMonterey, San Benito, Santa Clara21 hr
Feb 18, 11:25 PM PSTExtreme Cold WarningMTRAlameda, Contra Costa, Marin, Monterey, Napa, San Benito and 2 more34 hr
Feb 17, 2:59 AM PSTExtreme Cold WarningMTRMonterey, San Benito, Santa Clara30 hr
Jan 10, 11:14 AM PSTExtreme Cold WarningMTRMonterey22 hr
Jan 9, 1:07 PM PSTExtreme Cold WarningMTRMonterey, San Benito20 hr
Jan 7, 11:54 PM PSTExtreme Cold WarningMTRMonterey, San Benito, Santa Clara33 hr

Nearby

Alerts in force nowTornadoes on recordThe radar archive

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.