226
WWUS76 KPDT 201927
NPWPDT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
1127 AM PST TUE JAN 20 2026
ORZ510-210000-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260121T0000Z/
/O.CON.KPDT.ZF.Y.0010.000000T0000Z-260120T2000Z/
NORTH CENTRAL OREGON-
INCLUDING THE CITIES OF MORO, DUFUR, AND MAUPIN
1127 AM PST TUE JAN 20 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
..FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY
* WHAT...FOR THE FREEZING FOG ADVISORY, VISIBILITY HALF MILE OR LESS
IN FREEZING FOG. FOR THE AIR STAGNATION ADVISORY, POOR AIR QUALITY
WILL CONTINUE. THIS IS DUE TO AN INVERSION AND STAGNANT AIR
CONDITIONS NEAR THE SURFACE THAT WILL CONTINUE TO TRAP POLLUTANTS.
* WHERE...NORTH CENTRAL OREGON.
* WHEN...FOR THE AIR STAGNATION ADVISORY, UNTIL 4 PM PST THIS
AFTERNOON. FOR THE FREEZING FOG ADVISORY, UNTIL NOON PST TODAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS. LOW VISIBILITY COULD MAKE DRIVING CONDITIONS
HAZARDOUS, ESPECIALLY ALONG PORTIONS OF US-97.
* ADDITIONAL DETAILS...THERE WILL BE SOME IMPROVEMENT THIS
AFTERNOON, BEFORE FOG RETURNS THIS EVENING AND OVERNIGHT.
HOWEVER, LINGERING FREEZING FOG IN SOME AREAS COULD STILL CREATE
SPOTS WITH REDUCED VISIBILITIES AND COUPLED WITH TEMPERATURES AT
OR BELOW FREEZING, THERE COULD BE SLICK SPOTS ON ROADWAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF
AN AIR MASS ACROSS THE ADVISORY AREA, POLLUTION HAS THE POTENTIAL TO
INCREASE TO DANGEROUS LEVELS. PERSONS WITH RESPIRATORY ILLNESS
SHOULD FOLLOW THEIR PHYSICIANS ADVICE FOR DEALING WITH HIGH LEVELS
OF AIR POLLUTION DURING PERIODS OF STAGNANT AIR, STATE AIR QUALITY
AGENCIES HIGHLY RECOMMEND THAT NO OUTDOOR BURNING OCCUR AND THAT
RESIDENTIAL WOOD BURNING DEVICES BE LIMITED AS MUCH AS POSSIBLE.
ACCORDING TO STATE AIR QUALITY AGENCIES, PROLONGED PERIODS OF
STAGNANT AIR CAN HOLD POLLUTANTS CLOSE TO THE GROUND, WHERE PEOPLE
LIVE AND BREATHE. CHECK WITH YOUR LOCAL BURN AGENCY FOR ANY CURRENT
RESTRICTIONS IN YOUR AREA.
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
ORZ041-044-507-508-511-WAZ024-026>029-521-210000-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260121T0000Z/
EASTERN COLUMBIA RIVER GORGE OF OREGON-LOWER COLUMBIA BASIN OF
OREGON-FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-
FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF 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-SIMCOE HIGHLANDS-
INCLUDING THE CITIES OF WAITSBURG, FOSSIL, PROSSER, IONE,
PENDLETON, BICKLETON, ATHENA, NACHES, THE DALLES, THORP, DAYTON,
REDMOND, MADRAS, TRI-CITIES, WHITE SALMON, SUNNYSIDE, HERMISTON,
CONDON, WALLA WALLA, TOPPENISH, BOARDMAN, YAKIMA, GOLDENDALE,
BEND, CONNELL, HEPPNER, PRINEVILLE, ELLENSBURG, ARLINGTON, AND
PILOT ROCK
1127 AM PST TUE JAN 20 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
* WHAT...POOR AIR QUALITY WILL CONTINUE. THIS IS DUE TO AN INVERSION
AND STAGNANT AIR CONDITIONS NEAR THE SURFACE THAT WILL CONTINUE TO
TRAP POLLUTANTS.
* WHERE...PORTIONS OF CENTRAL, NORTH CENTRAL, AND NORTHEAST OREGON
AND CENTRAL, SOUTH CENTRAL, AND SOUTHEAST WASHINGTON.
* WHEN...UNTIL 4 PM PST THIS AFTERNOON.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF
AN AIR MASS ACROSS THE ADVISORY AREA, POLLUTION HAS THE POTENTIAL TO
INCREASE TO DANGEROUS LEVELS. PERSONS WITH RESPIRATORY ILLNESS
SHOULD FOLLOW THEIR PHYSICIANS ADVICE FOR DEALING WITH HIGH LEVELS
OF AIR POLLUTION DURING PERIODS OF STAGNANT AIR, STATE AIR QUALITY
AGENCIES HIGHLY RECOMMEND THAT NO OUTDOOR BURNING OCCUR AND THAT
RESIDENTIAL WOOD BURNING DEVICES BE LIMITED AS MUCH AS POSSIBLE.
ACCORDING TO STATE AIR QUALITY AGENCIES, PROLONGED PERIODS OF
STAGNANT AIR CAN HOLD POLLUTANTS CLOSE TO THE GROUND, WHERE PEOPLE
LIVE AND BREATHE. CHECK WITH YOUR LOCAL BURN AGENCY FOR ANY CURRENT
RESTRICTIONS IN YOUR AREA.
MD
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page