Prognostic Meteorological Discussion
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000
FXUS01 KWBC 081958
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
258 PM EST THU DEC 08 2016

VALID 00Z FRI DEC 09 2016 - 00Z SUN DEC 11 2016

...HEAVY SNOW AND RAIN POSSIBLE OVER THE SIERRAS...

...HEAVY SNOW POSSIBLE IN FAVORED AREAS DOWNWIND FROM THE GREAT
LAKES...

...AREAS OF RAIN AND FREEZING RAIN POSSIBLE OVER INTERIOR PORTIONS
OF THE PACIFIC NORTHWEST...

...TEMPERATURES WILL BE 15 TO 35 DEGREES BELOW AVERAGE OVER THE
ROCKIES AND HIGH PLAINS...

A COLD FRONT WILL MOVE THROUGH CALIFORNIA, THE PACIFIC NORTHWEST,
THE GREAT BASIN AND INTO THE INTERMOUNTAIN REGION BY THIS WEEKEND
- SPREADING RAIN TO THE COASTAL AREAS, A MIX OF RAIN AND FREEZING
RAIN TO INTERIOR WEST AND HIGHER ELEVATION SNOW ACROSS THE GREAT
BASIN AND ROCKIES. HIGH PRESSURE OVER THE CENTRAL AND NORTHERN
STATES WILL KEEP THE ARCTIC AIRMASS IN PLACE OVER THE HIGH PLAINS.

DOWNSTREAM, UPPER-LEVEL ENERGY AND FAVORABLE UPPER-LEVEL FLOW WILL
AID IN PRODUCING LAKE EFFECT SNOW DOWNWIND FROM THE GREAT LAKES
INTO PARTS OF NORTHERN NEW ENGLAND INTO THE WEEKEND.  TO THE
SOUTH, UPPER-LEVEL ENERGY MOVING OVER THE WESTERN AND CENTRAL GULF
COAST STATES WILL AID IN PRODUCING RAIN OVER PARTS OF THE SOUTHERN
PLAINS AND THE LOWER MISSISSIPPI VALLEY THROUGH FRIDAY MORNING.
RAIN AND EMBEDDED THUNDERSTORMS WILL ALSO DEVELOP OVER THE
SOUTHERN PORTION OF FLORIDA THROUGH FRIDAY EVENING.

CAMPBELL


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