039
WWUS76 KPDT 010841
NPWPDT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
1241 AM PST THU JAN 1 2026
WAZ028-012000-
/O.NEW.KPDT.ZF.Y.0001.260101T0841Z-260101T2000Z/
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260101T2000Z/
LOWER COLUMBIA BASIN OF WASHINGTON-
INCLUDING THE CITIES OF PROSSER, CONNELL, AND TRI-CITIES
1241 AM PST THU JAN 1 2026
..FREEZING FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY
..AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY
* WHAT...FOR THE FREEZING FOG ADVISORY, VISIBILITY ONE QUARTER TO
ONE HALF MILE 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...LOWER COLUMBIA BASIN OF WASHINGTON.
* WHEN...UNTIL NOON PST TODAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS. LOW VISIBILITY COULD MAKE DRIVING CONDITIONS
HAZARDOUS. ROADWAYS COULD BECOME SLIPPERY AND SIDEWALKS MAY BE
SLICK IN SPOTS.
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.
ORZ044-507-508-510-511-WAZ026-027-029-012000-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260101T2000Z/
LOWER COLUMBIA BASIN OF OREGON-FOOTHILLS OF THE NORTHERN BLUE
MOUNTAINS OF OREGON-FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF
OREGON-NORTH CENTRAL OREGON-CENTRAL OREGON-KITTITAS VALLEY-YAKIMA
VALLEY-FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
INCLUDING THE CITIES OF PILOT ROCK, BOARDMAN, HEPPNER, PENDLETON,
FOSSIL, ATHENA, ELLENSBURG, WAITSBURG, SUNNYSIDE, WALLA WALLA,
HERMISTON, BEND, PRINEVILLE, REDMOND, THORP, DAYTON, DUFUR,
MADRAS, IONE, MORO, NACHES, YAKIMA, CONDON, TOPPENISH, AND MAUPIN
1241 AM PST THU JAN 1 2026
..AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY
* 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...FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON AND WASHINGTON,
LOWER COLUMBIA BASIN OF OREGON, NORTH CENTRAL OREGON, CENTRAL
OREGON, KITTITAS VALLEY, AND YAKIMA VALLEY.
* WHEN...UNTIL NOON PST TODAY.
* 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.
LN
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