Prognostic Meteorological Discussion
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FXUS01 KWBC 020816
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
315 AM EST FRI DEC 02 2016

VALID 12Z FRI DEC 02 2016 - 12Z SUN DEC 04 2016

...HEAVY RAIN POSSIBLE OVER EASTERN TEXAS AND PARTS OF THE LOWER
MISSISSIPPI VALLEY...

...HEAVY RAIN POSSIBLE OVER THE OLYMPIC PENINSULA...

...HEAVY SNOW POSSIBLE OVER THE CASCADES...

A DEVELOPING UPPER-LEVEL LOW OVER NORTHWESTERN MEXICO WILL PULL
MOISTURE OFF THE WESTERN GULF OF MEXICO OVER PARTS OF THE SOUTHERN
PLAINS INTO THE LOWER MISSISSIPPI VALLEY THROUGH SUNDAY.  SHOWERS
AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE WESTERN GULF
COAST AND EXPAND INTO THE TEXAS PANHANDLE BY FRIDAY EVENING
CONTINUING INTO SATURDAY EVENING.  SNOW WILL DEVELOP OVER PARTS OF
THE CENTRAL/SOUTHERN ROCKIES ON FRIDAY AFTERNOON ENDING OVER THE
CENTRAL ROCKIES OVERNIGHT FRIDAY.  THE SNOW WILL WIND DOWN OVER
THE SOUTHERN ROCKIES BY SATURDAY EVENING.  RAIN WILL DEVELOP OVER
PARTS OF THE SOUTHERN HIGH PLAINS BY FRIDAY EVENING CONTINUING
INTO SATURDAY EVENING.  ANOTHER AREA OF RAIN WILL DEVELOP OVER
PARTS OF THE LOWER MISSISSIPPI VALLEY OVERNIGHT FRIDAY AND EXPAND
INTO PARTS OF THE TENNESSEE VALLEY BY SATURDAY AFTERNOON INTO
EVENING.  THE RAIN MAY BE HEAVY AT TIMES.

MEANWHILE, ONSHORE FLOW OFF THE PACIFIC WILL DEVELOP OVER PARTS OF
THE PACIFIC NORTHWEST THROUGH SUNDAY.  THE ONSHORE FLOW WILL AID
IN DEVELOPING RAIN AND HIGHER ELEVATION SNOW OVER THE NORTHWEST
THROUGH SATURDAY EVENING.  AS THE MOISTURE MOVES INLAND, SNOW WILL
DEVELOP OVER PARTS OF THE NORTHERN ROCKIES FRIDAY EVENING INTO
SATURDAY EVENING.  SNOW WILL ALSO DEVELOP OVER PARTS OF THE
NORTHERN HIGH PLAINS ON SATURDAY AFTERNOON INTO EVENING.

ELSEWHERE, AN UPPER-LEVEL LOW OVER SOUTHEASTERN CANADA WILL SLOWLY
MOVE TO NEWFOUNDLAND BY SATURDAY EVENING.  UPPER-LEVEL ENERGY
CIRCULATING AROUND THE UPPER-LEVEL LOW WILL AID IN PRODUCING LAKE
EFFECT SNOW DOWN WIND FROM THE GREAT LAKES FRIDAY INTO SATURDAY.


ZIEGENFELDER


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_WBG.PHP
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