Prognostic Meteorological Discussion
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000
FXUS01 KWBC 281944
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
244 PM EST SUN DEC 28 2014

VALID 00Z MON DEC 29 2014 - 00Z WED DEC 31 2014

...TEMPERATURES WILL BE 20 TO 30 DEGREES BELOW AVERAGE OVER THE
NORTHERN/CENTRAL PLAINS...

...SNOW IS FORECAST FOR THE INTERIOR WESTERN U. S....

COLD HIGH PRESSURE OVER WESTERN CANADA WILL FORCE A FRONT
SOUTHWARD OVER THE NORTHERN INTERMOUNTAIN REGION TO SOUTHERN
CALIFORNIA/SOUTHWEST BY TUESDAY MORNING.  UPPER-LEVEL ENERGY OVER
THE PACIFIC NORTHWEST WILL MOVE SOUTHWARD TO THE GREAT BASIN BY
TUESDAY, TOO.  WEAK UPSLOPE FLOW WILL AID IN PRODUCING LIGHT SNOW
OVER THE NORTHERN/CENTRAL ROCKIES WILL MOVE SOUTHEASTWARD TO THE
CENTRAL/SOUTHERN HIGH PLAINS BY TUESDAY.  IN ADDITION, THE
UPPER-LEVEL ENERGY WILL AID IN PRODUCING LIGHT SNOW OVER PARTS OF
THE INTERIOR PACIFIC NORTHWEST TO THE GREAT BASIN/CENTRAL ROCKIES
WILL MOVE SOUTHWARD TO PARTS OF SIERRAS IN CALIFORNIA TO PARTS OF
THE GREAT BASIN ALSO BY TUESDAY.

MEANWHILE, A FRONT OVER THE SOUTHERN MID-ATLANTIC TO THE LOWER
MISSISSIPPI VALLEY WILL SINK SOUTHEASTWARD TO THE FLORIDA
PENINSULA BY TUESDAY MORNING.  MOISTURE POOLING ALONG THE BOUNDARY
WILL AID IN PRODUCING RAIN OVER THE LOWER MISSISSIPPI VALLEY TO
PARTS OF THE MID-ATLANTIC WILL LIKEWISE MOVE SOUTHWARD TO FLORIDA
AND THE PARTS OF THE MID-ATLANTIC COAST.  ADDITIONALLY, SHOWERS
AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF EASTERN FLORIDA
MONDAY NIGHT INTO TUESDAY.  ELSEWHERE, UPPER-LEVEL IMPULSES WILL
TRIGGER LIGHT SNOW OVER PARTS OF THE UPPER GREAT LAKES THROUGH
TUESDAY.


ZIEGENFELDER


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




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