Alert archive / California / Dense Fog Advisories in 2021
Dense Fog Advisory 7, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this dense fog advisory at Nov 13, 2021, 9:35 PM PST for 8 counties in California. It took effect at Nov 13, 2021, 11:00 PM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Nov 13, 2021, 9:35 PM PST (05:35 UTC)
- In effect from
- Nov 13, 2021, 11:00 PM PST
- Expired
- Nov 14, 2021, 10:57 AM PST
- In force
- 12 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Alameda County, CA, City and County of San Francisco, CA, Contra Costa County, CA, Marin County, CA, Napa County, CA, San Mateo County, CA, Santa Clara County, CA, Sonoma County, CA
The radar
The Sacramento radar (KDAX), 87 km from the middle of the area, began a volume at 05:37 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.
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 13, 9:08 PM PST | Marine Dense Fog Advisory | MTR | 14 hr | |
| Nov 14, 2:04 PM PST | Small Craft Advisory | MTR | 61 hr |
Nearby
Dense Fog Advisories in California, 2021Every dense fog advisory in 2021
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.