Prognostic Meteorological Discussion
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FXUS01 KWBC 101952
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
249 PM EST WED FEB 10 2016

VALID 00Z THU FEB 11 2016 - 00Z SAT FEB 13 2016

...HEAVY RAIN OVER THE OLYMPIC PENINSULA AND HEAVY SNOW POSSIBLE
FOR THE CASCADES...

...LAKE EFFECT SNOW DOWNWIND FROM THE GREAT LAKES...

...TEMPERATURES WILL BE 10 TO 20 DEGREES BELOW AVERAGE FROM EAST
OF THE PLAINS TO THE NORTHERN/CENTRAL APPALACHIANS AND THE
SOUTHEAST...

MUCH OF THE EASTERN THIRD OF THE US WILL BE IN A COLDER, ACTIVE
PATTERN OVER THE NEXT FEW DAYS. A DEEP UPPER-LEVEL TROUGH WILL BE
PRESENT THROUGH THE WEEKEND AND ARCTIC AIR WILL SPILL SOUTH AND
EAST WITH EACH WAVE. COLD AIR FLOWING OVER THE OPEN WATERS OF THE
GREAT LAKES WILL GENERATE BANDS OF HEAVIER SNOW, WHICH WILL AFFECT
AREAS DOWNWIND OF THE LAKES. NUMEROUS LAKE EFFECT SNOW WARNINGS
ARE IN EFFECT FROM MICHIGAN TO NEW YORK. WINTER STORM WARNINGS ARE
ALSO IN EFFECT FOR WESTERN COUNTIES OF MICHIGAN. SNOW WILL ALSO
DEVELOP OVER THE HIGHER ELEVATIONS OF THE NORTHERN/CENTRAL
APPALACHIANS AND PORTIONS OF THE NORTHEAST THROUGH THURSDAY
EVENING. TEMPERATURES FOR AREAS EAST OF THE PLAINS TO THE
NORTHERN/CENTRAL APPALACHIANS AND THE SOUTHEAST ARE FORECAST TO
RANGE 10 TO 20 DEGREES BELOW AVERAGE.

SNOW WILL BE POSSIBLE FOR PORTIONS OF THE NORTHERN PLAINS AS AN
UPPER-LEVEL DISTURBANCE MOVES THROUGH. ACCUMULATIONS ARE FORECAST
TO BE GENERALLY LESS THAN 4 INCHES FOR SOUTH DAKOTA AND IOWA.
WESTERN NORTH DAKOTA AND NORTHEAST MONTANA WILL LIKELY HAVE 3-DAY
ACCUMULATIONS RANGING FROM 4 TO 8 INCHES.

THE PACIFIC NORTHWEST WILL BE IN AN ACTIVE WET PATTERN THROUGH THE
END OF THE WEEK AS MULTIPLE FRONTS APPROACH FROM THE GULF OF
ALASKA. A PLUME OF MOISTURE STREAMING INTO THE REGION WILL
INCREASE PRECIPITATION OVER MUCH OF COASTAL WASHINGTON AND OREGON.
COASTAL AREAS AND THE OLYMPIC PENINSULA COULD HAVE RAINFALL
AMOUNTS UP TO 7 INCHES. MOUNTAIN SNOW IS ALSO EXPECTED - THE
CASCADES COULD HAVE ACCUMULATIONS OF 6 TO 18 INCHES WITH ISOLATED
HIGHER AMOUNTS POSSIBLE.



CAMPBELL


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