Alert archive / California / Heat Advisories in 2020

Heat Advisory 9, NWS San Diego, CA

September 30, 20204 counties in California

NWS San Diego, CA issued this heat advisory at Sep 30, 2020, 1:30 PM PDT for 4 counties in California. It took effect at Oct 1, 2020, 8:00 PM PDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Sep 30, 2020, 1:30 PM PDT (20:30 UTC)
In effect from
Oct 1, 2020, 8:00 PM PDT
Expired
Oct 2, 2020, 8:00 PM PDT
In force
24 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 20:27 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 Diego, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 30, 1:30 PM PDTExcessive Heat WarningSGXOrange, Riverside, San Bernardino, San Diego55 hr

Nearby

Heat Advisories in California, 2020Every heat advisory in 2020

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.