WINTER WEATHER ADVISORY
Warning Issue Date: 1146 AM EST FRI DEC 18 2009
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST
SATURDAY...
BASIS...AN AREA OF LOW PRESSURE WILL TRACK ALONG THE SOUTHEAST AND
CAROLINA COAST THIS EVENING THROUGH SATURDAY.
PRECIPITATION TYPES AND ACCUMULATION...AREAS OF SNOW AND SLEET ARE
EXPECTED TO DEVELOP ACROSS THE REGION THIS AFTERNOON. SNOW
ACCUMULATIONS OF UP TO AN INCH WILL BE POSSIBLE. THE SNOW WILL
CHANGE TO MOSTLY RAIN DURING THE LATE AFTERNOON. THERE MAY BE SOME
FREEZING RAIN LATER TONIGHT THROUGH SATURDAY MORNING. WITH THE
STORM SYSTEM STILL IN THE INITIAL STAGES OF DEVELOPMENT...THE
TRACK OF THE LOW PRESSURE SYSTEM REMAINS UNCERTAIN. THE SMALLEST
DEVIATION EAST OR WEST FROM THE CURRENT FORECAST TRACK...COULD
RESULT IN HEAVIER OR LESSER AMOUNTS OF SNOW OR ICE ACROSS THE
ADVISORY AREA.
TIMING AND DURATION...PRECIPITATION WILL OVERSPREAD THE REGION
THIS AFTERNOON... AND WILL REMAIN STEADY LATE THIS AFTERNOON
THROUGH TONIGHT. PRECIPITATION WILL TAPER OFF EARLY SATURDAY
MORNING... AND WILL REMAIN FAIRLY LIGHT THROUGH SATURDAY
AFTERNOON. PRECIPITATION CHANCES ARE EXPECTED TO END BY LATE
SATURDAY AFTERNOON.
IMPACTS...TRAVELING WILL BECOME HAZARDOUS ACROSS THE ADVISORY
AREA THIS AFTERNOON INTO EARLY SATURDAY... WITH SLICK ICY SPOTS
DEVELOPING FIRST ON ELEVATED SURFACES...INCLUDING BRIDGES AND
OVERPASSES... BEFORE ALL ROAD SURFACES ARE IMPACTED LATE TODAY. SOME
POWER OUTAGES MAY OCCUR DUE TO THE COMBINATION OF SOME SNOW AND
GLAZE ON TREES... AND STRONG WINDS OF 20 TO 30 MPH. IN
ADDITION... WIND CHILLS LATE THIS AFTERNOON THROUGH TONIGHT WILL
OCCASIONALLY DROP DOWN INTO THE UPPER TEENS TO LOWER 20S.
$$
GIH/BL
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