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NWS Eureka CAFW.W 0005September 12, 2026

Red Flag Warning: Northern Lake Including Gravelly Valley, Eastern Lake Including Clearlake and Middletown, Southern Lake Including Cobb and Konocti and 1 more, CA

The National Weather Service office in Eureka issued a red flag warning for Northern Lake Including Gravelly Valley, Eastern Lake Including Clearlake and Middletown, Southern Lake Including Cobb and Konocti and 1 more in California, which was in force until 2:00 a.m. local time on September 13. It was the 5th red flag warning the NWS office in Eureka issued in 2026. California had 6 red flag warnings in September 2026, against 14 in an average September of 2008-2025 (California's red flag warnings by year).

ExpiredWarning

Issued2:48 a.m. PDT, September 12, 2026
In force from10:00 a.m. PDT, September 12, 2026
Expired2:00 a.m. PDT, September 13, 2026

In force for 16 hours; it has expired. The agency may have replaced it with a new notice.

The notice

Issued by
National Weather Service, Eureka CA
Area
Northern Lake Including Gravelly Valley, Eastern Lake Including Clearlake and Middletown, Southern Lake Including Cobb and Konocti and 1 more
State
California
Level
Warning
Issued
2:48 a.m. PDT, September 12, 2026
In force from
10:00 a.m. PDT, September 12, 2026
Expires
2:00 a.m. PDT, September 13, 2026
CAP severity, certainty, urgency
Severe, Likely, Expected
VTEC event
KEKA FW.W 0005
Official source
National Weather Service: the notice at its source

Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.

The notice as issued

...UPDATE FOR LOCATION CLARIFICATION... * WIND...Northwest winds gusts of 20 to 30 mph, locally up to 40 for the higher ridges. * HUMIDITY...Relative humidity 20 to 30 percent. * IMPACTS...Any fires that develop or are already burning will likely spread rapidly. Outdoor burning is not recommended. * WHERE...All of Lake County, California. Including, but not limited to; Lakeport, Clearlake, Kelseyville, Upper Lake, Cobb, Middletown, and Lower Lake.

What the agency told people to do

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.