HAZARDOUS WEATHER OUTLOOK
Issue Date: 437 AM EST THU DEC 24 2009
Expiration: 500 AM EST FRI DEC 25 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WEST VIRGINIA...
NORTHERN AND CENTRAL VIRGINIA...AND CENTRAL AND WESTERN MARYLAND
WITH THE EXCEPTION OF GARRETT COUNTY.
.DAY ONE...TODAY AND TONIGHT
A STORM SYSTEM WILL ALLOW LIGHT FREEZING RAIN TO DEVELOP LATE
TONIGHT ACROSS PORTIONS OF THE POTOMAC HIGHLANDS...SHENANDOAH
VALLEY OF VIRGINIA AND CENTRAL VIRGINIA FOOTHILLS.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
FREEZING RAIN IS EXPECTED ACROSS THE OUTLOOK AREA CHRISTMAS
MORNING. FREEZING RAIN WILL LIKELY CHANGE TO RAIN FOR LOCATIONS
EAST OF THE BLUE RIDGE BY EARLY AFTERNOON...BUT IT IS POSSIBLE
THAT THE FREEZING RAIN MAY LINGER ACROSS SOME AREAS WEST OF THE
BLUE RIDGE INTO EARLY FRIDAY EVENING BEFORE THE CHANGE TO RAIN.
THE HEAVIEST ICE ACCRETION WILL OCCUR IN THE VALLEYS. A WINTER
STORM WATCH HAS BEEN ISSUED FOR WEST OF THE BLUE RIDGE IN
VIRGINIA...EASTERN WEST VIRGINIA...AND WESTERN MARYLAND. PLEASE
SEE THE LATEST WINTER WEATHER MESSAGE FOR THE DETAILS.
WINDS WILL INCREASE FRIDAY...WITH STRONG WIND GUSTS POSSIBLE OVER
RIDGE TOPS ABOVE 2000 FEET FRIDAY AND FRIDAY NIGHT.
IN ADDITION...RAINFALL ONTO THE EXISTING SNOWPACK MAY RESULT IN
SMALL STREAM FLOODING FRIDAY NIGHT AND SATURDAY. THOSE WITH ROAD
FLOODING INTERESTS SHOULD ENSURE STORM DRAINS ARE CLEAR OF SNOW
AND ICE.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.
SPECIAL WEATHER STATEMENT
Issue Date: 1255 AM EST THU DEC 24 2009
Expiration: 700 AM EST THU DEC 24 2009
...PATCHY DENSE FOG WILL CAUSE SLICK SPOTS ON ROADWAYS THIS MORNING...
PATCHY DENSE FOG HAS FORMED ACROSS PORTIONS OF THE NORTHERN
PIEDMONT...CENTRAL FOOTHILLS...CENTRAL SHENANDOAH VALLEY...AND
POTOMAC HIGHLANDS. EXPECT PATCHY DENSE FOG TO CONTINUE TO DEVELOP ACROSS
THE AREA THROUGH THE EARLY MORNING...WITH VISIBILITY AT TIMES
BEING REDUCED TO UNDER ONE QUARTER OF A MILE IN SOME LOCATIONS. WITH
TEMPERATURES WELL BELOW FREEZING...IN THE TEENS AND TWENTIES...ACROSS
THE AREA...THIS FOG MAY LEAD TO PATCHES OF ICE ON UNTREATED
SURFACES.
IN ADDITION...TEMPERATURES ROSE ABOVE FREEZING ACROSS MUCH OF THE
AREA WEDNESDAY...CAUSE SOME OF THE SNOW FROM THIS PAST WEEKENDS
STORM TO MELT. WITH THE SUB-FREEZING TEMPERATURES TONIGHT...ANY
WATER FROM THE MELTED SNOW HAS LIKELY RE- FROZEN...FORMING PATCHES
OF ICE.
ANY ROADWAYS...BRIDGES AND OVERPASSES...AND SIDEWALKS THAT HAVE
NOT BEEN TREATED MAY BE VERY SLIPPERY EARLY THIS MORNING.
MOTORISTS SHOULD EXERCISE EXTREME CAUTION...AND BE PREPARED FOR
SUDDEN REDUCTIONS IN VISIBILITY. BE AWARE OF THE POTENTIAL TO
ENCOUNTER PATCHES OF ICE EARLY THIS MORNING. BE ESPECIALLY
CAUTIOUS OF BLACK ICE...WHICH IS PARTICULARLY HARD TO DETECT.
THE RE-FREEZING OF SNOW MELT AND SLUSH IS EXPECTED AGAIN TOMORROW
NIGHT AS OVERNIGHT TEMPERATURES WILL FALL INTO THE TEENS AND
TWENTIES ONCE AGAIN.
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