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

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933
WWUS76 KEKA 200510
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1010 PM PDT Tue Aug 19 2025

CAZ107-108-111-114-115-201900-
/O.CON.KEKA.HT.Y.0006.250821T1800Z-250824T0600Z/
Northern Trinity-Southern Trinity-Northeastern Mendocino Interior-
Northern Lake-Southern Lake-
Including Finley, Douglas City, Middletown, Clearlake, Clearlake
Park, Trinity Center, Hidden Valley Lake, Big Bar, Weaverville,
Covelo, Ruth, Hyampom, Forest Glen, Carrville, Hayfork, Del Loma,
Junction City, Helena, Lakeport, Gravelly Valley Airport, and
Peanut
1010 PM PDT Tue Aug 19 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.

&&

$$

CAZ105-106-110-113-201900-
/O.CON.KEKA.HT.Y.0006.250822T1800Z-250824T0600Z/
Northern Humboldt Interior-Southern Humboldt Interior-
Northwestern Mendocino Interior-Southeastern Mendocino Interior-
Including Calpella, Bull Creek, Ukiah, Redwood Valley, Orleans,
Weitchpec, Willow Creek, Laytonville, Hopland, Hoopa, Potter
Valley, Talmage, Benbow, Garberville, and Alderpoint
1010 PM PDT Tue Aug 19 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