Prognostic Meteorological Discussion
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000
FXUS01 KWBC 300839
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
338 AM EST FRI JAN 30 2015

VALID 12Z FRI JAN 30 2015 - 12Z SUN FEB 1 2015

***SNOW FOR THE GREAT LAKES AND INTO NEW ENGLAND***

***MUCH COLDER WEATHER ARRIVING TO THE GREAT PLAINS STATES***

***DEVELOPING LOW PRESSURE SYSTEM OVER THE CENTRAL U.S.***

A QUICK-MOVING DISTURBANCE ACROSS THE NORTHEAST U.S. IS PRODUCING
LIGHT TO MODERATE SNOW FROM PENNSYLVANIA TO MAINE.  ONCE THE
SURFACE LOW EMERGES OVER THE WATERS OF THE ATLANTIC OCEAN,
INTENSIFICATION IS FORECAST TO OCCUR AND THIS WILL LIKELY RESULT
IN A HEAVIER BAND OF SNOW DEVELOPING OVER MAINE, NEW HAMPSHIRE,
AND EASTERN MASSACHUSETTS.  THIS EVENT WILL BE CONSIDERABLY WEAKER
THAN ITS MONSTER PREDECESSOR A FEW DAYS AGO, WITH MOST LOCATIONS
GETTING LESS THAN SIX INCHES OF SNOW.  THE EXCEPTION WILL LIKELY
BE OVER MAINE, WHERE GREATER SNOWFALL AMOUNTS ARE POSSIBLE.

AFTER WIDESPREAD HIGH TEMPERATURES IN THE 70S AND EVEN LOW 80S
OVER THE CENTRAL AND SOUTHERN PLAINS EARLIER THIS WEEK, MUCH
COOLER TEMPERATURES HAVE ARRIVED AS A STRONG SURFACE HIGH SLIDES
DOWN FROM CANADA BEHIND A COLD FRONT AND EXPANDS OVER MUCH OF THE
CENTRAL U.S. TO CLOSE OUT THE WORK WEEK.  HIGHS WILL BE CLOSER TO
AVERAGE FOR THIS TIME OF YEAR, ALONG WITH GUSTY WINDS.

CONDITIONS WILL BECOME INCREASINGLY WET OVER THE SOUTHWEST AND
SOUTHERN PLAINS FOR THE NEXT FEW DAYS WHILE AN ELONGATED SHORTWAVE
TROUGH MOVES OVER NORTHERN MEXICO AND STRONG LOW-LEVEL WINDS
ADVECT INCREASING PACIFIC MOISTURE TO THESE AREAS.  THIS MOISTURE
WILL FUEL WIDESPREAD MODERATE TO LOCALLY HEAVY PRECIPITATION, WITH
THE GREATEST AMOUNTS EXPECTED FOR ARIZONA AND NEW MEXICO ON
FRIDAY.  ACCUMULATING SNOW IS EXPECTED FOR THE HIGHER ELEVATIONS
OF UTAH, COLORADO, AND NEW MEXICO, AND A MIX OF RAIN AND SNOW FOR
THE HIGHER ELEVATIONS OF ARIZONA.  BY THE WEEKEND, SNOW IS
EXPECTED TO EMERGE OVER THE MIDWEST STATES AS THE SURFACE LOW
DEVELOPS OVER THE CENTRAL PLAINS, AND RAIN FARTHER TO THE SOUTH.

HAMRICK

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