Alert archive / California / Heat Advisories in 2026
Heat Advisory 13, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this heat advisory at Sep 7, 2026, 10:27 AM PDT for 11 counties in California. It took effect at Sep 8, 2026, 1:15 PM PDT. It was in force for 55 hr.
The area
The counties it named.
The facts
- Issued
- Sep 7, 2026, 10:27 AM PDT (17:27 UTC)
- In effect from
- Sep 8, 2026, 1:15 PM PDT
- Expired
- Sep 10, 2026, 8:34 PM PDT
- In force
- 55 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, Monterey County, CA, Napa County, CA, San Benito County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 46 km from the middle of the area, began a volume at 17:33 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.
Nearby
Heat Advisories in California, 2026Every heat advisory in 2026
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.