493
WWUS76 KPDT 210558
NPWPDT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
1058 PM PDT THU AUG 20 2026
ORZ041-044-049-050-502-503-505>508-510-511-WAZ024-026>030-521-523-
211400-
/O.CON.KPDT.HT.Y.0006.000000T0000Z-260822T0500Z/
EASTERN COLUMBIA RIVER GORGE OF OREGON-
LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO-
JOHN DAY HIGHLANDS-
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-
FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON-
NORTH CENTRAL OREGON-CENTRAL OREGON-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS-SIMCOE HIGHLANDS-
LOWER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST-
INCLUDING THE CITIES OF ARLINGTON, THE DALLES, BOARDMAN,
HERMISTON, IONE, COVE, ELGIN, LA GRANDE, UNION, ENTERPRISE,
JOSEPH, WALLOWA, MEACHAM, TOLLGATE, LONG CREEK, NORTH POWDER,
UKIAH, DAYVILLE, JOHN DAY, MITCHELL, MONUMENT, SPRAY, BROTHERS,
PAULINA, PRAIRIE CITY, SENECA, ATHENA, PENDLETON, PILOT ROCK,
HEPPNER, CONDON, FOSSIL, DUFUR, MAUPIN, MORO, BEND, MADRAS,
PRINEVILLE, REDMOND, WHITE SALMON, ELLENSBURG, THORP, NACHES,
SUNNYSIDE, TOPPENISH, YAKIMA, CONNELL, PROSSER, TRI-CITIES,
DAYTON, WAITSBURG, WALLA WALLA, SKI BLUEWOOD RESORT, GOLDENDALE,
BICKLETON, APPLETON, CLE ELUM, AND CLIFFDELL
1058 PM PDT THU AUG 20 2026
..HEAT ADVISORY IN EFFECT UNTIL 10 PM PDT FRIDAY
..HEAT ADVISORY IN EFFECT UNTIL 10 PM PDT FRIDAY
* WHAT...HOT CONDITIONS WITH AFTERNOON HIGH TEMPERATURES OF 95
TO 105 DEGREES EXPECTED. THIS WILL POSE A MODERATE TO MAJOR
RISK OF HEAT-RELATED ILLNESS.
* WHERE...PORTIONS OF CENTRAL, NORTH CENTRAL, AND NORTHEAST
OREGON AND CENTRAL, SOUTH CENTRAL, AND SOUTHEAST WASHINGTON.
* WHEN...UNTIL 10 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.
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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
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