589  
WWUS76 KEKA 300605  
NPWEKA  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE EUREKA CA  
1105 PM PDT THU MAY 29 2025  
 
CAZ105-106-301900-  
/O.CON.KEKA.HT.Y.0001.250530T1800Z-250531T0400Z/  
NORTHERN HUMBOLDT INTERIOR-SOUTHERN HUMBOLDT INTERIOR-  
INCLUDING WEITCHPEC, BRIDGEVILLE, GARBERVILLE, ORLEANS, WILLOW  
CREEK, DINSMORE, KNEELAND, BULL CREEK, HOOPA, ALDERPOINT,  
SHIVELY, PEPPERWOOD, AND BENBOW  
1105 PM PDT THU MAY 29 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 9 PM PDT FRIDAY  
 
* WHAT...TEMPERATURES AS HIGH AS 102 WITH MODERATE HEAT RISK.  
 
* WHERE...HUMBOLDT INTERIOR.  
 
* WHEN...FROM 11 AM TO 9 PM PDT FRIDAY.  
 
* 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.  
 
 
 
 
 
CAZ107-108-111-114-115-301900-  
/O.CON.KEKA.HT.Y.0001.250530T1800Z-250601T0500Z/  
NORTHERN TRINITY-SOUTHERN TRINITY-NORTHEASTERN MENDOCINO INTERIOR-  
NORTHERN LAKE-SOUTHERN LAKE-  
INCLUDING CARRVILLE, CLEARLAKE, TRINITY CENTER, ZENIA, JUNCTION  
CITY, HYAMPOM, DEL LOMA, DOUGLAS CITY, MIDDLETOWN, HAYFORK,  
KNOBCONE CAMP, FOREST GLEN, FINLEY, PEANUT, RUTH, HELENA, HIDDEN  
VALLEY LAKE, COVELO, GRAVELLY VALLEY AIRPORT, BIG BAR, CLEARLAKE  
PARK, LAKEPORT, AND WEAVERVILLE  
1105 PM PDT THU MAY 29 2025  
 
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM FRIDAY TO 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...FROM 11 AM FRIDAY TO 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.  
 
 
 
 
 
CAZ110-113-301900-  
/O.CON.KEKA.HT.Y.0001.250530T1800Z-250531T0400Z/  
NORTHWESTERN MENDOCINO INTERIOR-SOUTHEASTERN MENDOCINO INTERIOR-  
INCLUDING WILLITS, LEGGET, HOPLAND, REDWOOD VALLEY, TALMAGE,  
UKIAH, LAYTONVILLE, CALPELLA, AND POTTER VALLEY  
1105 PM PDT THU MAY 29 2025  
   
..HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 9 PM PDT FRIDAY  
 
* WHAT...TEMPERATURES AS HIGH AS 104 EXPECTED WITH MODERATE HEAT  
RISK.  
 
* WHERE...NORTHWESTERN MENDOCINO INTERIOR AND SOUTHEASTERN MENDOCINO  
INTERIOR.  
 
* WHEN...FROM 11 AM TO 9 PM PDT FRIDAY.  
 
* 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  
 
JB  
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