AIR STAGNATION ADVISORY
Warning Issue Date: 916 AM PST WED DEC 02 2009
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST
FRIDAY...
AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST
FRIDAY.
HIGH PRESSURE WILL BE OVER THE AREA THROUGH FRIDAY MORNING.
LIGHT WINDS AND LOW INVERSION LEVELS ARE EXPECTED TO CONTINUE OVER
THE ROGUE AND ILLINOIS VALLEYS. THIS WILL RESULT IN LITTLE MIXING
OF THE AIR AND POOR VENTILATION...WITH THE POTENTIAL FOR
POLLUTANTS TO BE TRAPPED NEAR GROUND LEVEL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT
OF AN AIR MASS ACROSS THE ADVISORY AREA...POLLUTION MAY INCREASE.
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