Alert archive / California / Heat Advisories in 2025

Heat Advisory 6, NWS Eureka, CA

August 19, 20254 counties in California

NWS Eureka, CA issued this heat advisory at Aug 19, 2025, 1:15 PM PDT for 4 counties in California. It took effect at Aug 21, 2025, 11:00 AM PDT. It was in force for 60 hr.

The area

The counties it named.

The facts

Issued
Aug 19, 2025, 1:15 PM PDT (20:15 UTC)
In effect from
Aug 21, 2025, 11:00 AM PDT
Expired
Aug 23, 2025, 11:00 PM PDT
In force
60 hr
Issued by
NWS Eureka, CA

Counties Humboldt County, CA, Lake County, CA, Mendocino County, CA, Trinity County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 102 km from the middle of the area, began a volume at 20:19 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.

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Eureka, CA wrote its last area forecast discussion before this heat advisory went out at Aug 19, 12:11 AM PDT, 13 hours 4 minutes earlier.

Area forecast discussion, Aug 19, 12:11 AM PDT, 13 hours 4 minutes before
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The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 19, 3:01 PM PDTSmall Craft AdvisoryEKA4 days

Nearby

Heat Advisories in California, 2025Every heat advisory in 2025

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.