Alert archive / California / Heat Advisories in 2026
Heat Advisory 13, NWS San Diego, CA
NWS San Diego, CA issued this heat advisory at Sep 11, 2026, 2:30 AM PDT for 4 counties in California. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Sep 11, 2026, 2:30 AM PDT (09:30 UTC)
- Expired
- Sep 11, 2026, 8:00 PM PDT
- In force
- 18 hr
- Issued by
- NWS San Diego, CA
Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The radar
The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 09:33 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.