924
WWUS76 KPDT 140111
NPWPDT
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
511 PM PST TUE JAN 13 2026
WAZ026-142000-
/O.NEW.KPDT.FG.Y.0006.260114T0300Z-260114T2000Z/
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260116T1800Z/
KITTITAS VALLEY-
INCLUDING THE CITIES OF ELLENSBURG AND THORP
511 PM PST TUE JAN 13 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
..DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST WEDNESDAY
* 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...KITTITAS VALLEY.
* WHEN...FOR THE AIR STAGNATION ADVISORY, UNTIL 10 AM PST FRIDAY.
FOR THE DENSE FOG ADVISORY, UNTIL NOON PST WEDNESDAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS. LOW VISIBILITY COULD MAKE DRIVING CONDITIONS
HAZARDOUS, ESPECIALLY ALONG PORTIONS OF I-90.
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.
ORZ041-044-507-508-510-511-WAZ024-027>029-521-142000-
/O.CON.KPDT.AS.Y.0002.000000T0000Z-260116T1800Z/
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-NORTH CENTRAL
OREGON-CENTRAL OREGON-EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-FOOTHILLS OF THE
BLUE MOUNTAINS OF WASHINGTON-SIMCOE HIGHLANDS-
INCLUDING THE CITIES OF WALLA WALLA, YAKIMA, PRINEVILLE, FOSSIL,
REDMOND, DUFUR, PENDLETON, THE DALLES, PILOT ROCK, TOPPENISH,
SUNNYSIDE, TRI-CITIES, IONE, MORO, HERMISTON, PROSSER, CONNELL,
WAITSBURG, BICKLETON, ARLINGTON, ATHENA, DAYTON, WHITE SALMON,
NACHES, BEND, CONDON, BOARDMAN, HEPPNER, MADRAS, GOLDENDALE, AND
MAUPIN
511 PM PST TUE JAN 13 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...
* 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 10 AM PST FRIDAY.
* 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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