Coastal Flood Warnings in California
37 coastal flood 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 coastal flood warnings reaches back to 2005.
Coastal Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Coastal Flood Warnings
- 37
- Busiest year
- 20105 coastal flood warnings
- Average year
- 3over 13 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.
- City and County of San Francisco14
- San Mateo County14
- Marin County13
- Sonoma County13
- Humboldt County13
- Santa Cruz County12
- Monterey County12
- Mendocino County5
- Del Norte County4
- Los Angeles County3
- Alameda County3
- Contra Costa County3
- Santa Clara County3
- San Diego County3
- Napa County3
- Santa Barbara County1
- Ventura County1
- San Luis Obispo County1
The latest coastal flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 5, 11:33 AM PST | Coastal Flood Warning | EKA | Humboldt | 2 hr |
| Jan 3, 5:57 PM PST | Coastal Flood Warning | EKA | Humboldt | 20 hr |
| Jan 2, 2:54 PM PST | Coastal Flood Warning | EKA | Del Norte, Humboldt, Mendocino | 22 hr |
| Jan 1, 11:01 PM PST | Coastal Flood Warning | MTR | Alameda, Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo and 2 more | 39 hr |
| Jan 1, 7:22 PM PST | Coastal Flood Warning | EKA | Del Norte, Humboldt, Mendocino | 17 hr |
Nearby
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.