Alert archive / California / High Surf Advisories
High Surf Advisories in California, 2020
40 high surf advisories 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 high surf advisories reaches back to 2005.
High Surf Advisories by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- High Surf Advisories
- 40
- Busiest month
- December13 high surf advisories
- Busiest day
- November 5, 20203 high surf advisories
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 2, 6:04 PM PST | High Surf Advisory | LOX | 17 hr | |
| Jan 3, 9:34 PM PST | High Surf Advisory | LOX | 60 hr | |
| Jan 9, 1:48 AM PST | High Surf Advisory | LOX | 34 hr | |
| Jan 9, 3:00 PM PST | High Surf Advisory | EKA | Del Norte, Humboldt, Mendocino | 52 hr |
| Jan 9, 10:17 PM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 65 hr |
| Jan 10, 2:06 PM PST | High Surf Advisory | LOX | 4 days | |
| Jan 20, 1:50 AM PST | High Surf Advisory | LOX | Los Angeles | 64 hr |
| Jan 23, 12:59 PM PST | High Surf Advisory | LOX | Los Angeles | 70 hr |
| Jan 23, 2:56 PM PST | High Surf Advisory | SGX | Orange, San Diego | 3 days |
| Jan 26, 5:51 AM PST | High Surf Advisory | LOX | Los Angeles | 5 days |
| Feb 1, 1:27 AM PST | High Surf Advisory | LOX | Los Angeles | 3 days |
| Feb 8, 1:27 PM PST | High Surf Advisory | LOX | 53 hr | |
| Feb 22, 1:46 PM PST | High Surf Advisory | LOX | 67 hr | |
| Feb 28, 1:13 PM PST | High Surf Advisory | LOX | Los Angeles | 3 days |
| Apr 1, 9:17 AM PDT | High Surf Advisory | LOX | 17 hr | |
| Jul 2, 12:49 PM PDT | High Surf Advisory | SGX | Orange, San Diego | 4 days |
| Jul 4, 3:57 AM PDT | High Surf Advisory | LOX | Los Angeles | 56 hr |
| Sep 24, 1:33 AM PDT | High Surf Advisory | LOX | 55 hr | |
| Sep 25, 4:52 AM PDT | High Surf Advisory | MTR | Monterey | 15 hr |
| Nov 5, 2:20 AM PST | High Surf Advisory | EKA | Del Norte, Humboldt, Mendocino | 50 hr |
| Nov 5, 12:04 PM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 46 hr |
| Nov 5, 1:50 PM PST | High Surf Advisory | LOX | 4 days | |
| Nov 7, 12:39 AM PST | High Surf Advisory | MTR | Marin, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 5 hr |
| Nov 7, 4:13 AM PST | High Surf Advisory | SGX | Orange, San Diego | 46 hr |
| Nov 23, 2:49 AM PST | High Surf Advisory | EKA | Del Norte, Humboldt, Mendocino | 3 days |
| Nov 23, 11:47 PM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 60 hr |
| Nov 24, 1:50 PM PST | High Surf Advisory | LOX | 61 hr | |
| Dec 1, 8:48 PM PST | High Surf Advisory | LOX | Los Angeles | 3 days |
| Dec 5, 2:16 PM PST | High Surf Advisory | EKA | Del Norte, Humboldt, Mendocino | 3 days |
| Dec 6, 4:44 AM PST | High Surf Advisory | LOX | Los Angeles | 4 days |
| Dec 7, 1:49 AM PST | High Surf Advisory | SGX | Orange, San Diego | 72 hr |
| Dec 8, 7:23 AM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 32 hr |
| Dec 9, 9:42 PM PST | High Surf Advisory | LOX | 11 hr | |
| Dec 12, 6:02 AM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 61 hr |
| Dec 12, 2:04 PM PST | High Surf Advisory | LOX | 5 days | |
| Dec 14, 3:12 AM PST | High Surf Advisory | EKA | Del Norte, Humboldt, Mendocino | 57 hr |
| Dec 14, 7:21 PM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 44 hr |
| Dec 25, 2:03 PM PST | High Surf Advisory | LOX | Los Angeles | 11 days |
| Dec 27, 1:48 AM PST | High Surf Advisory | SGX | Orange, San Diego | 3 days |
| Dec 30, 5:22 AM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 46 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.
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.