Alert archive / California / High Surf Advisories in 2018

High Surf Advisory 4, NWS San Francisco Bay Area, CA

December 17, 20186 counties in California

NWS San Francisco Bay Area, CA issued this high surf advisory at Dec 17, 2018, 8:47 PM PST for 6 counties in California. It took effect at Dec 17, 2018, 9:00 PM PST. It was in force for 54 hr.

The area

The counties it named.

The facts

Issued
Dec 17, 2018, 8:47 PM PST (04:47 UTC)
In effect from
Dec 17, 2018, 9:00 PM PST
Expired
Dec 20, 2018, 3:00 AM PST
In force
54 hr
Issued by
NWS San Francisco Bay Area, CA

Counties City and County of San Francisco, CA, Marin County, CA, Monterey County, CA, San Mateo County, CA, Santa Cruz County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 53 km from the middle of the area, began a volume at 04:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this high surf advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this high surf advisory went out at Dec 17, 3:52 PM PST, 4 hours 55 minutes earlier.

Area forecast discussion, Dec 17, 3:52 PM PST, 4 hours 55 minutes before
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Nearby

High Surf Advisories in California, 2018Every high surf advisory in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.