930
WWUS76 KEKA 091217
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
517 AM PDT Sun Aug 9 2026

CAZ108-116-117-092030-
/O.CON.KEKA.HT.Y.0003.000000T0000Z-260810T0500Z/
Southern Trinity-Northwestern and Central Trinity-Northeastern
Trinity-
Including Del Loma, Weaverville, Ruth, Peanut, Zenia, Hyampom,
Helena, Forest Glen, Douglas City, Junction City, Hayfork, Big Bar,
Trinity Center, and Carrville
517 AM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Trinity County.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ110-111-113-114-118>120-092030-
/O.CON.KEKA.HT.Y.0004.000000T0000Z-260810T0500Z/
Northwestern Interior Mendocino-Northeastern Interior Mendocino-
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Clearlake, Redwood Valley, Knobcone Camp, Laytonville,
Gravelly Valley Airport, Hopland, Covelo, Clearlake Park, Hidden
Valley Lake, Middletown, Legget, Calpella, Lakeport, Upper Lake,
Willits, Potter Valley, Ukiah, Finley, Talmage, and Cobb
517 AM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 100 to 110 will produce moderate to major
  HeatRisk on Sunday.

* WHERE...Northern Mendocino Interior, Lake County, and Southeastern
  Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

CAZ112-092030-
/O.CON.KEKA.HT.Y.0005.000000T0000Z-260810T0500Z/
Southwestern Interior Mendocino-
Including Philo, Comptche, Boonville, and Yorkville
517 AM PDT Sun Aug 9 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...Temperatures of 90 to 101 will produce moderate HeatRisk on
  Sunday.

* WHERE...Southwestern Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

MKK