WINTER WEATHER ADVISORY
Warning Issue Date: 416 PM PST TUE DEC 29 2009
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM PST WEDNESDAY...
THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 4 AM PST
WEDNESDAY.
* SNOW HAS BEGUN FALLING WITH 1 TO 2 INCHES ALREADY ACCUMULATING
ON THE GROUND. SNOW WILL CONTINUE OVERNIGHT TAPERING OFF AFTER
MIDNIGHT.
* TOTAL SNOW ACCUMULATIONS OF 2 TO 4 INCHES CAN BE EXPECTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY IS ISSUED WHEN SNOW IS OCCURRING OR IS
EXPECTED TO DEVELOP AND ACCUMULATE. TRAVEL MAY BE HAZARDOUS...
ESPECIALLY ON BRIDGES...OVERPASSES...AND SECONDARY ROADS.
MOTORISTS ARE URGED TO USE EXTREME CAUTION...AND SLOW DOWN TO
ADJUST FOR RAPIDLY CHANGING DRIVING CONDITIONS AND REDUCED
VISIBILITIES. FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB
SITE AT WWW.WEATHER.GOV/PENDLETON.
$$
AIR STAGNATION ADVISORY
Warning Issue Date: 1200 PM PST WED DEC 30 2009
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY...
AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
WEDNESDAY.
* AIR QUALITY MAY DETERIORATE AS A RESULT OF INCREASING AIR
POLLUTION LEVELS IN VALLEYS AND BASINS DUE TO STABLE
CONDITIONS AND VERY LIGHT WINDS LIMITING MIXING HEIGHTS AND
AIR MOVEMENT.
* AIR STAGNATION WILL CAUSE THE ACCUMULATION OF PARTICULATE
MATTER IN VALLEYS AND BASINS BELOW 3500 FEET.
* POOR AIR QUALITY MAY AFFECT PERSONS WITH RESPIRATORY PROBLEMS
AND PERSONS ENGAGED IN STRENUOUS OUTDOOR ACTIVITIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT
OF AN AIR MASS ACROSS THE ADVISORY AREA...POLLUTION WILL
INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE
RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION...
CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.
$$
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