Alert archive / California / Areal Flood Advisories in 2021
Areal Flood Advisory 28, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this areal flood advisory at Dec 23, 2021, 8:12 AM PST for 7 counties in California. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Dec 23, 2021, 8:12 AM PST (16:12 UTC)
- Expired
- Dec 23, 2021, 10:15 AM PST
- In force
- 2 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
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, Sonoma County, CA
The radar
The Sacramento radar (KDAX), 84 km from the middle of the area, began a volume at 16:13 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 |
|---|---|---|---|---|
| Dec 23, 7:00 AM PST | Areal Flood Advisory | MTR | Marin, Sonoma | 6 hr |
| Dec 23, 7:36 AM PST | Areal Flood Advisory | MTR | San Mateo | 3 hr |
| Dec 23, 9:56 AM PST | Areal Flood Advisory | MTR | Monterey, San Benito, Santa Clara, Santa Cruz | 2 hr |
Nearby
Areal Flood Advisories in California, 2021Every areal flood 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.