Prognostic Meteorological Discussion
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FXUS01 KWBC 282050
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
349 PM EST WED JAN 28 2015

VALID 00Z THU JAN 29 2015 - 00Z SAT JAN 31 2015

...A WINTRY MIX OF PRECIPITATION IS EXPECTED WITH A PAIR OF
SURFACE LOWS CROSSING THE GREAT LAKES REGION...

...RECORD-BREAKING WARMTH WILL COME TO AN END ACROSS THE GREAT
PLAINS...

...CONDITIONS WILL BECOME INCREASINGLY WET OVER THE SOUTHWEST AND
FOUR CORNERS STATES...

A PAIR OF SURFACE LOWS TRACKING OUT OF THE UPPER MIDWEST WEDNESDAY
NIGHT WILL TRIGGER WIDESPREAD LIGHT TO MODERATE PRECIPITATION FROM
THE GREAT LAKES AND OHIO VALLEY TO THE NORTHEAST AND NORTHERN
MID-ATLANTIC STATES LATE THIS WEEK.  RAIN IS EXPECTED WITHIN THE
SOUTHERN EXTENT OF PRECIPITATION; HOWEVER...A SWATH OF
ACCUMULATING SNOW WILL BE POSSIBLE ACROSS THE UPPER GREAT LAKES
AND NEW ENGLAND.  MARGINAL TEMPERATURES TO THE SOUTH OF THE SNOW
WILL LEAD TO A WINTRY MIX OF PRECIPITATION FOR PORTIONS OF THE
OHIO VALLEY...CENTRAL APPALACHIANS...AND NORTHERN MID-ATLANTIC
STATES.  ALSO...AS ONE OF THE SURFACE LOWS RAPIDLY DEEPENS OFF THE
NORTHEAST COAST LATE IN THE FORECAST PERIOD...MOIST ATLANTIC AIR
WRAPPING AROUND THE STORM COULD BRING A ROUND OF HEAVY SNOW INLAND
OVER MAINE ON FRIDAY.

RECORD-BREAKING WARMTH WILL COME TO AND END ACROSS THE GREAT
PLAINS AS A STRONG SURFACE HIGH SLIDES DOWN FROM CANADA AND
EXPANDS OVER MUCH OF THE CENTRAL U.S. THURSDAY AND FRIDAY.

CONDITIONS WILL BECOME INCREASINGLY WET OVER THE SOUTHWEST AND
FOUR CORNERS STATES THE NEXT FEW DAYS WHILE AN ELONGATED UPPER
TROUGH EDGES INLAND OVER THE SOUTHWESTERN QUARTER OF THE NATION
AND STRONG LOW-LEVEL WINDS BRING AN ABUNDANCE OF PACIFIC MOISTURE
ONSHORE.  THE ANOMALOUS MOISTURE WILL FUEL WIDESPREAD MODERATE TO
HEAVY PRECIPITATION...WITH THE HIGHEST AMOUNTS EXPECTED ALONG THE
UPSLOPE SIDE OF THE MOGOLLON RIM AND SOUTHERN ROCKIES.
ACCUMULATING SNOW WILL BE POSSIBLE IN SOME OF THE HIGHER
ELEVATIONS.


GERHARDT

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