Prognostic Meteorological Discussion
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FXUS01 KWBC 240837
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
337 AM EST WED DEC 24 2014

VALID 12Z WED DEC 24 2014 - 12Z FRI DEC 26 2014

***WIDESPREAD RAIN FOR THE EASTERN U.S. ON WEDNESDAY***

***SNOW AND WIND FOR THE GREAT LAKES***

***MORE SNOW FOR THE GREAT BASIN AND ROCKY MOUNTAINS***

A COMPLEX STORM SYSTEM OVER THE EASTERN U.S. IS FORECAST TO
CONSOLIDATE INTO A MAIN SURFACE LOW THAT WILL TRACK NORTHWARD FROM
THE GULF OF MEXICO TO THE GREAT LAKES BY WEDNESDAY NIGHT.  THIS
WILL CREATE A VARIETY OF WEATHER IMPACTS FOR CHRISTMAS TRAVELERS
ON WEDNESDAY.  A BROAD AREA OF STEADY RAIN IS EXPECTED FROM
FLORIDA TO NEW ENGLAND, WITH THE HEAVIEST RAINFALL OCCURRING SOUTH
OF THE VIRGINIA STATE LINE.  THE SOUTHEAST STATES WILL ALSO HAVE
SOME STRONG TO SEVERE THUNDERSTORMS AHEAD OF THE COLD FRONT.

ON THE WESTERN SIDE OF THE DEVELOPING SURFACE LOW, RAIN IS
EXPECTED TO CHANGE TO SNOW FROM ILLINOIS TO NORTHERN MICHIGAN,
WITH SEVERAL INCHES OF SNOW ACCUMULATION A POSSIBILITY.  THERE
WILL ALSO BE A FAIR AMOUNT OF WIND OVER THIS REGION AS THE LOW
INTENSIFIES.  SOME HIGHER-ELEVATION SNOW SHOWERS ARE ALSO POSSIBLE
FOR PARTS OF THE CENTRAL AND NORTHERN APPALACHIANS AFTER THE COLD
FRONT MOVES THROUGH.

OUT WEST, A PACIFIC STORM SYSTEM IS EXPECTED TO BRING WIDESPREAD
SNOW SHOWERS FROM WASHINGTON STATE TO THE WESTERN HIGH PLAINS ON
THURSDAY, GIVING MANY IN THOSE AREAS A WHITE CHRISTMAS.  THE
GREATEST ACCUMULATIONS ARE EXPECTED FOR THE HIGHER MOUNTAIN RANGES
OF THE CENTRAL AND NORTHERN ROCKIES.

HAMRICK


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV
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