983
WWUS76 KPDT 160534
NPWPDT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
934 PM PST THU JAN 15 2026
ORZ507-WAZ026-027-161500-
/O.CAN.KPDT.FG.Y.0006.000000T0000Z-260116T2000Z/
/O.EXA.KPDT.ZF.Y.0007.000000T0000Z-260116T2000Z/
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260121T0000Z/
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-KITTITAS
VALLEY-YAKIMA VALLEY-
INCLUDING THE CITIES OF TOPPENISH, NACHES, YAKIMA, THORP, PILOT
ROCK, PENDLETON, SUNNYSIDE, ATHENA, AND ELLENSBURG
934 PM PST THU JAN 15 2026
..FREEZING FOG ADVISORY IN EFFECT UNTIL NOON PST FRIDAY
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
TUESDAY...
..DENSE FOG ADVISORY IS CANCELLED
* WHAT...FOR THE FREEZING FOG ADVISORY, VISIBILITY ONE QUARTER 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...IN OREGON, FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF
OREGON. IN WASHINGTON, KITTITAS VALLEY AND YAKIMA VALLEY.
* WHEN...FOR THE FREEZING FOG ADVISORY, UNTIL NOON PST FRIDAY. FOR
THE AIR STAGNATION ADVISORY, UNTIL 4 PM PST TUESDAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS. LOW VISIBILITY COULD MAKE DRIVING CONDITIONS
HAZARDOUS.
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.
WAZ029-161500-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260121T0000Z/
/O.CON.KPDT.FG.Y.0006.000000T0000Z-260116T2000Z/
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
INCLUDING THE CITIES OF WALLA WALLA, WAITSBURG, AND DAYTON
934 PM PST THU JAN 15 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
TUESDAY...
..DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY
* WHAT...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. FOR THE
DENSE FOG ADVISORY, VISIBILITY ONE QUARTER MILE OR LESS IN DENSE
FOG.
* WHERE...FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON.
* WHEN...FOR THE AIR STAGNATION ADVISORY, UNTIL 4 PM PST TUESDAY.
FOR THE DENSE FOG ADVISORY, UNTIL NOON PST FRIDAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS. LOW VISIBILITY COULD MAKE DRIVING CONDITIONS
HAZARDOUS.
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.
ORZ510-161500-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260121T0000Z/
/O.CON.KPDT.ZF.Y.0007.000000T0000Z-260116T2000Z/
NORTH CENTRAL OREGON-
INCLUDING THE CITIES OF MAUPIN, MORO, AND DUFUR
934 PM PST THU JAN 15 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
TUESDAY...
..FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY
* WHAT...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. FOR THE
FREEZING FOG ADVISORY, VISIBILITY ONE QUARTER MILE OR LESS IN
FREEZING FOG.
* WHERE...NORTH CENTRAL OREGON.
* WHEN...FOR THE AIR STAGNATION ADVISORY, UNTIL 4 PM PST TUESDAY.
FOR THE FREEZING FOG ADVISORY, UNTIL NOON PST FRIDAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS. LOW VISIBILITY COULD MAKE DRIVING CONDITIONS
HAZARDOUS.
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.
ORZ041-044-508-511-WAZ024-028-521-161500-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260121T0000Z/
EASTERN COLUMBIA RIVER GORGE OF OREGON-LOWER COLUMBIA BASIN OF
OREGON-FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON-CENTRAL
OREGON-EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-LOWER COLUMBIA
BASIN OF WASHINGTON-SIMCOE HIGHLANDS-
INCLUDING THE CITIES OF WHITE SALMON, PROSSER, IONE, CONNELL,
CONDON, PRINEVILLE, BOARDMAN, HERMISTON, THE DALLES, HEPPNER,
GOLDENDALE, BEND, BICKLETON, TRI-CITIES, ARLINGTON, REDMOND,
MADRAS, AND FOSSIL
934 PM PST THU JAN 15 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
TUESDAY...
* 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...EASTERN COLUMBIA RIVER GORGE OF OREGON AND WASHINGTON,
LOWER COLUMBIA BASIN OF OREGON AND WASHINGTON, FOOTHILLS OF THE
SOUTHERN BLUE MOUNTAINS OF OREGON, CENTRAL OREGON, AND SIMCOE
HIGHLANDS.
* WHEN...UNTIL 4 PM PST TUESDAY.
* 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.
MC
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