AIR STAGNATION ADVISORY
Warning Issue Date: 225 PM PST THU DEC 24 2009
...AIR STAGNATION ADVISORY IN EFFECT FROM 4 AM THURSDAY TO 4 PM
PST SATURDAY...
THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED AN AIR
STAGNATION ADVISORY...WHICH IS IN EFFECT FROM 4 AM THURSDAY TO
4 PM PST SATURDAY.
* AIR QUALITY: WILL DETERIORATE IN VALLEYS AND BASINS DUE TO HIGH
PRESSURE LIMITING AIR MOVEMENT. THIS WILL CAUSE THE ACCUMULATION
OF PARTICULATE MATTER IN VALLEYS AND BASINS MAINLY BELOW 3500
FEET.
* IMPACTS: POOR AIR QUALITY WILL 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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