319  
WWUS76 KEKA 301847  
NPWEKA  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE EUREKA CA  
1147 AM PDT FRI MAY 30 2025  
 
CAZ105-106-310400-  
/O.CON.KEKA.HT.Y.0001.000000T0000Z-250531T0400Z/  
NORTHERN HUMBOLDT INTERIOR-SOUTHERN HUMBOLDT INTERIOR-  
INCLUDING HOOPA, DINSMORE, SHIVELY, BENBOW, WEITCHPEC, BULL  
CREEK, BRIDGEVILLE, GARBERVILLE, KNEELAND, WILLOW CREEK,  
ALDERPOINT, ORLEANS, AND PEPPERWOOD  
1147 AM PDT FRI MAY 30 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING  
 
* WHAT...TEMPERATURES AS HIGH AS 102 WITH MODERATE HEAT RISK.  
 
* WHERE...HUMBOLDT INTERIOR.  
 
* WHEN...UNTIL 9 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.  
 
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.  
 
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND  
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN  
SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT  
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN  
EMERGENCY! CALL 9 1 1.  
 
 
 
 
 
CAZ107-108-111-114-115-310700-  
/O.CON.KEKA.HT.Y.0001.000000T0000Z-250601T0500Z/  
NORTHERN TRINITY-SOUTHERN TRINITY-NORTHEASTERN MENDOCINO INTERIOR-  
NORTHERN LAKE-SOUTHERN LAKE-  
INCLUDING DOUGLAS CITY, FINLEY, DEL LOMA, KNOBCONE CAMP,  
LAKEPORT, HIDDEN VALLEY LAKE, HYAMPOM, CLEARLAKE, HAYFORK,  
WEAVERVILLE, FOREST GLEN, HELENA, CLEARLAKE PARK, RUTH, PEANUT,  
CARRVILLE, ZENIA, BIG BAR, MIDDLETOWN, TRINITY CENTER, JUNCTION  
CITY, GRAVELLY VALLEY AIRPORT, AND COVELO  
1147 AM PDT FRI MAY 30 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SATURDAY  
 
* WHAT...TEMPERATURES AS HIGH AS 105 EXPECTED WITH MODERATE HEAT  
RISK.  
 
* WHERE...TRINITY COUNTY, LAKE COUNTY, AND NORTHEASTERN MENDOCINO  
INTERIOR.  
 
* WHEN...UNTIL 10 PM PDT SATURDAY.  
 
* 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.  
 
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.  
 
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND  
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN  
SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT  
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN  
EMERGENCY! CALL 9 1 1.  
 
 
 
 
 
CAZ110-113-310400-  
/O.CON.KEKA.HT.Y.0001.000000T0000Z-250531T0400Z/  
NORTHWESTERN MENDOCINO INTERIOR-SOUTHEASTERN MENDOCINO INTERIOR-  
INCLUDING LAYTONVILLE, WILLITS, LEGGET, CALPELLA, POTTER VALLEY,  
REDWOOD VALLEY, TALMAGE, UKIAH, AND HOPLAND  
1147 AM PDT FRI MAY 30 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING  
 
* WHAT...TEMPERATURES AS HIGH AS 104 EXPECTED WITH MODERATE HEAT  
RISK.  
 
* WHERE...NORTHWESTERN MENDOCINO INTERIOR AND SOUTHEASTERN MENDOCINO  
INTERIOR.  
 
* WHEN...UNTIL 9 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.  
 
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.  
 
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND  
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN  
SHADED OR AIR CONDITIONED ENVIRONMENTS. 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  
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