929
WWUS76 KPDT 211314
NPWPDT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
614 AM PDT TUE JUL 21 2026
ORZ041-044-507-WAZ024-027>029-220515-
/O.CON.KPDT.HT.Y.0005.260721T1800Z-260724T0400Z/
EASTERN COLUMBIA RIVER GORGE OF OREGON-LOWER COLUMBIA BASIN OF
OREGON-FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-EASTERN
COLUMBIA RIVER GORGE OF WASHINGTON-YAKIMA VALLEY-LOWER COLUMBIA
BASIN OF WASHINGTON-FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
INCLUDING THE CITIES OF DAYTON, TOPPENISH, PILOT ROCK, WALLA
WALLA, BOARDMAN, TRI-CITIES, PROSSER, PENDLETON, ARLINGTON,
ATHENA, IONE, WHITE SALMON, NACHES, HERMISTON, SUNNYSIDE,
CONNELL, YAKIMA, WAITSBURG, AND THE DALLES
614 AM PDT TUE JUL 21 2026
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM
PDT THURSDAY...
* WHAT...HOT CONDITIONS WITH TEMPERATURES UP TO 100 TO 103 DEGREES
EXPECTED, WITH 101 TO 105 DEGREES IN THE COLUMBIA BASIN. THIS WILL
POSE A MODERATE TO MAJOR RISK OF HEAT-RELATED ILLNESS.
* WHERE...EASTERN COLUMBIA RIVER GORGE OF OREGON AND WASHINGTON,
LOWER COLUMBIA BASIN OF OREGON AND WASHINGTON, FOOTHILLS OF THE
NORTHERN BLUE MOUNTAINS OF OREGON, YAKIMA VALLEY, AND FOOTHILLS OF
THE BLUE MOUNTAINS OF WASHINGTON.
* WHEN...FROM 11 AM THIS MORNING TO 9 PM PDT THURSDAY.
* IMPACTS...HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.
* ADDITIONAL DETAILS...THE HEAT WILL BEGIN TODAY, WITH WIDESPREAD
MODERATE AND LOCALLY MAJOR HEATRISK.
WEDNESDAY LOOKS TO BE THE HOTTEST DAY, WITH MAJOR HEATRISK ACROSS
THE COLUMBIA BASIN, YAKIMA VALLEY AND PORTIONS OF THE GORGE AND BLUE
MOUNTAIN FOOTHILLS.
THURSDAY WILL ALSO SEE WIDESPREAD MODERATE HEATRISK AND LOCALLY
MAJOR HEATRISK, MAINLY ACROSS THE COLUMBIA BASIN.
SMOKE FROM AREA WILDFIRES COULD END UP AFFECTING HOW HOT
TEMPERATURES GET.
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. YOUNG CHILDREN AND
PETS SHOULD NEVER BE LEFT UNATTENDED IN VEHICLES UNDER ANY
CIRCUMSTANCES.
TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN
POSSIBLE RESCHEDULE STRENUOUS ACTIVITIES TO EARLY MORNING OR
EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT
STROKE. WEAR LIGHTWEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE.
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 SHELTERING INFORMATION AND OTHER HUMAN SERVICES IN YOUR AREA,
DIAL 2 1 1 DURING BUSINESS HOURS OR VISIT 211INFO.ORG FOR OREGON OR
WA211.ORG FOR WASHINGTON ANYTIME.
BL
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page