AIR STAGNATION ADVISORY
Warning Issue Date: 1200 PM PST TUE DEC 29 2009
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY...
AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY.
* AIR QUALITY MAY DETERIORATE AS A RESULT OF INCREASING AIR
POLLUTION LEVELS IN VALLEYS AND BASINS DUE TO STABLE
CONDITIONS AND VERY LIGHT WINDS LIMITING MIXING HEIGHTS AND
AIR MOVEMENT.
* AIR STAGNATION WILL CAUSE THE ACCUMULATION OF PARTICULATE
MATTER IN VALLEYS AND BASINS BELOW 3500 FEET.
* POOR AIR QUALITY MAY AFFECT PERSONS WITH RESPIRATORY PROBLEMS
AND PERSONS ENGAGED IN STRENUOUS OUTDOOR ACTIVITIES.
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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