1 warning is in effect for Mendocino County, CA. The most serious is a high surf warning.
Since 2016 the National Weather Service has issued about 1,130 alerts that included Mendocino County, roughly 113 a year. The most common is the frost advisory (325 from 2016 to 2025). No tornado warnings were recorded here in that period. 4 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
Active alerts for Mendocino County
High Surf Warning
Southwestern Humboldt; Coastal MendocinoUntil · NWS Eureka CA
HIGH SURF WARNING REMAINS IN EFFECT UNTIL 4 AM PST SUNDAY
Full alert text
* WHAT...Dangerously large breaking waves 22 to 30 feet.
* WHERE...Southwestern Humboldt and Coastal Mendocino Counties.
* WHEN...Until 4 AM PST Sunday.
* IMPACTS...Breaking waves can sweep people off jetties and
docks, and into dangerous seas. Life-threatening surf
conditions and significant beach erosion can be expected.
* ADDITIONAL DETAILS...After only brief improvement late
Saturday through Sunday, a second large swell is forecast late
Sunday through Monday.
What to do: Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.
Map data: NWS, OpenFreeMap, OpenStreetMap
Mendocino County alert history
Alert events that included Mendocino County or its forecast zones, from the NWS warning archive.
4 tornadoes have been recorded in Mendocino County since 1950. That ranks 30 of 58 counties in California. The most recent was on February 27, 2023 (rated unknown).