Non-Precipitation Warnings / Watches / Advisories
Issued by NWS Pendleton, OR

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WWUS76 KPDT 182351
NPWPDT

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
351 PM PST THU DEC 18 2014

...STAGNANT CONDITIONS TO CONTINUE THROUGH FRIDAY MORNING...

.INVERSIONS WILL CONTINUE TO PRODUCE LOW CLOUDS AND PATCHY FOG
OVER THE COLUMBIA BASIN INTO FRIDAY MORNING.

WAZ026>028-191800-
/O.CON.KPDT.AS.Y.0004.000000T0000Z-141219T1800Z/
KITTITAS VALLEY-YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
INCLUDING THE CITIES OF...ELLENSBURG...THORP...NACHES...
SUNNYSIDE...TOPPENISH...YAKIMA...CONNELL...PROSSER...TRI-CITIES
351 PM PST THU DEC 18 2014

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY...

AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
FRIDAY.

* LOCATIONS: VALLEYS IN AND AROUND THE LOWER COLUMBIA BASIN OF
  WASHINGTON INCLUDING THE YAKIMA VALLEY.

* IMPACTS: POLLUTANTS TRAPPED NEAR THE SURFACE CAN NEGATIVELY
  AFFECT THOSE WITH RESPIRATORY CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT
OF AN AIR MASS ACROSS THE ADVISORY AREA...POLLUTION WILL
INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE
RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION...
CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.

&&

$$





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