Alert archive / California / Frost Advisories / 2021

Frost Advisories in California, March 2021

23 frost advisories in March 2021. 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 frost advisories reaches back to 2005.

Frost Advisories by county

Each county as a circle sized by its count in March 2021. Tap one for its archive.

Frost Advisories
23
Busiest day
March 15, 20213 frost advisories

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.

IssuedProductOfficeCountiesLasted
Mar 1, 2:42 PM PSTFrost AdvisoryEKAHumboldt, Lake, Mendocino18 hr
Mar 2, 2:37 PM PSTFrost AdvisoryEKADel Norte, Humboldt, Lake, Mendocino18 hr
Mar 4, 1:07 AM PSTFrost AdvisoryEKAMendocino7 hr
Mar 6, 3:32 AM PSTFrost AdvisoryEKAMendocino29 hr
Mar 7, 2:04 PM PSTFrost AdvisoryEKAHumboldt, Mendocino17 hr
Mar 10, 2:31 PM PSTFrost AdvisoryEKAHumboldt, Mendocino18 hr
Mar 11, 1:04 PM PSTFrost AdvisoryEKAHumboldt, Mendocino20 hr
Mar 12, 1:43 PM PSTFrost AdvisoryEKAMendocino19 hr
Mar 13, 12:36 PM PSTFrost AdvisoryEKAMendocino18 hr
Mar 15, 2:30 AM PDTFrost AdvisoryMTRMarin, Monterey, Napa, San Benito, Sonoma31 hr
Mar 15, 1:01 PM PDTFrost AdvisorySGXRiverside, San Bernardino, San Diego19 hr
Mar 15, 1:31 PM PDTFrost AdvisorySTO20 hr
Mar 16, 1:27 PM PDTFrost AdvisoryEKADel Norte, Humboldt, Mendocino20 hr
Mar 19, 3:32 AM PDTFrost AdvisoryEKALake, Mendocino29 hr
Mar 20, 12:51 PM PDTFrost AdvisoryMTRMarin, Monterey, Napa, Sonoma20 hr
Mar 20, 2:30 PM PDTFrost AdvisoryEKADel Norte, Humboldt18 hr
Mar 22, 3:28 AM PDTFrost AdvisoryEKADel Norte, Humboldt, Mendocino30 hr
Mar 23, 2:04 PM PDTFrost AdvisoryEKAHumboldt, Mendocino19 hr
Mar 24, 2:08 PM PDTFrost AdvisoryEKALake, Mendocino19 hr
Mar 25, 2:12 PM PDTFrost AdvisoryEKADel Norte, Humboldt, Mendocino19 hr
Mar 26, 2:32 PM PDTFrost AdvisoryEKAHumboldt, Lake, Mendocino18 hr
Mar 28, 2:29 PM PDTFrost AdvisoryEKALake, Mendocino19 hr
Mar 29, 2:24 PM PDTFrost AdvisoryEKADel Norte, Mendocino19 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

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. Warning verification from the Mesonet's Cow. Rebuilt daily.