Non-Precipitation Warnings / Watches / Advisories
Issued by NWS Eureka, CA

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792
WWUS76 KEKA 210245
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
745 PM PDT Wed Aug 20 2025

CAZ107-108-111-114-115-211045-
/O.CON.KEKA.HT.Y.0006.250821T1800Z-250824T0600Z/
Northern Trinity-Southern Trinity-Northeastern Mendocino Interior-
Northern Lake-Southern Lake-
Including Douglas City, Finley, Hyampom, Carrville, Middletown,
Forest Glen, Clearlake Park, Covelo, Helena, Weaverville, Peanut,
Big Bar, Junction City, Hidden Valley Lake, Ruth, Lakeport,
Trinity Center, Clearlake, Del Loma, Hayfork, and Gravelly Valley
Airport
745 PM PDT Wed Aug 20 2025

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THURSDAY TO 11 PM PDT
SATURDAY...

* WHAT...High temperatures from 100 to 110 with moderate to isolated
  Major HeatRisk.

* WHERE...Trinity County, Lake County, and Northeastern Mendocino
  Interior.

* WHEN...From 11 AM Thursday to 11 PM PDT Saturday.

* IMPACTS...Hot temperatures and warm nights 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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

Schedule frequent rest breaks in shaded or air conditioned
environments during outdoor work. Anyone overcome by heat should be
moved to a cool and shaded location. Heat stroke is an emergency!
Call 9 1 1.

&&

$$

CAZ105-106-110-113-211045-
/O.CON.KEKA.HT.Y.0006.250822T1800Z-250824T0600Z/
Northern Humboldt Interior-Southern Humboldt Interior-
Northwestern Mendocino Interior-Southeastern Mendocino Interior-
Including Willow Creek, Talmage, Hopland, Orleans, Bull Creek,
Alderpoint, Calpella, Garberville, Benbow, Redwood Valley,
Laytonville, Weitchpec, Ukiah, Potter Valley, and Hoopa
745 PM PDT Wed Aug 20 2025

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

* WHAT...Temperatures from 100 to 109 with moderate to isolated
  Major HeatRisk.

* WHERE...Humboldt Interior, Northwestern Mendocino Interior, and
  Southeastern Mendocino Interior.

* WHEN...From 11 AM Friday to 11 PM PDT Saturday.

* IMPACTS...Hot temperatures and warm night 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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

Schedule frequent rest breaks in shaded or air conditioned
environments during outdoor work. Anyone overcome by heat should be
moved to a cool and shaded location. Heat stroke is an emergency!
Call 9 1 1.

&&

$$

For hazard areas see https://www.wrh.noaa.gov/map/?wfo=eka

JHW