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Air Stagnation Advisory

URGENT - WEATHER MESSAGE
National Weather Service Pendleton OR
1003 AM PDT Sat Oct 20 2018

...STAGNANT AIR CONDITIONS EXPECTED...

ORZ041-044-049-050-502-503-505>511-WAZ024-026>030-520-521-211900-
/O.CON.KPDT.AS.Y.0001.000000T0000Z-181023T1700Z/
East Columbia River Gorge-Lower Columbia Basin of Oregon-
Grande Ronde Valley-Wallowa County-
Northern Blue Mountains of Oregon-
Southern Blue Mountains of Oregon-John Day Basin-Ochoco-
John Day Highlands-
Foothills of the Northern Blue Mountains of Oregon-
Foothills of the Southern Blue Mountains of Oregon-
East Slopes of the Oregon Cascades-North Central 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-
Northwest Blue Mountains-East Slopes of the Washington Cascades-
Simcoe Highlands-
including the cities of Arlington, The Dalles, Boardman,
Hermiston, Ione, Cove, Elgin, La Grande, Union, Enterprise,
Joseph, Wallowa, Meacham, Tollgate, Long Creek, North Powder,
Ukiah, Dayville, John Day, Mitchell, Monument, Spray, Brothers,
Paulina, Prairie City, Seneca, Pendleton, Pilot Rock, Heppner,
Condon, Fossil, La Pine, Sunriver, Dufur, Maupin, Bend, Madras,
Prineville, Redmond, White Salmon, Ellensburg, Thorp, Naches,
Sunnyside, Toppenish, Yakima, Connell, Prosser, Tri-Cities,
Dayton, Waitsburg, Walla Walla, Ski Bluewood Resort, Appleton,
Cle Elum, Cliffdell, Goldendale, and Bickleton
1003 AM PDT Sat Oct 20 2018

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT
TUESDAY...

* AIR QUALITY...Moderate to unhealthy at times.

* IMPACTS...Stagnant air, along with smoke and other pollutants,
  will lead to poor air quality through early next week.

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.

&&

$$



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