Prognostic Meteorological Discussion
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000
FXUS01 KWBC 302101
PMDSPD

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

VALID 00Z SAT JAN 31 2015 - 00Z MON FEB 02 2015

...WIDESPREAD RAIN AND SNOW WILL CONTINUE OVER THE SOUTHWEST...

...STORM SYSTEM DEVELOPING OVER THE GREAT PLAINS WILL RAISE HAVOC
ACROSS PORTIONS OF THE CENTRAL U.S. THIS WEEKEND...

...HEAVY SNOWS EXPECTED ACROSS MAINE FRIDAY NIGHT INTO SATURDAY...


WIDESPREAD PRECIPITATION WILL CONTINUE ACROSS THE SOUTHWESTERN
CORNER OF THE NATION LATE THIS WEEK AS A DEEP UPPER TROUGH EDGES
SOUTHEASTWARD TOWARDS NORTHERN MEXICO AND LOW-LEVEL WINDS AHEAD OF
THE TROUGH PUMP ANOMALOUS PACIFIC MOISTURE INLAND.  OROGRAPHIC
EFFECTS WILL HELP PRODUCE HEFTY TOTALS ALONG THE UPSLOPE SIDE OF
THE TERRAIN...AND TEMPERATURES SHOULD BE LOW ENOUGH TO SUPPORT
SNOW ACCUMULATIONS OVER THE HIGHER ELEVATIONS OF THE SOUTHERN
ROCKIES AND WASATCH RANGE.

THE WIDESPREAD PRECIPITATION IN THE SOUTHWEST WILL BEGIN TO SPREAD
OUT INTO THE SOUTHERN AND CENTRAL PLAINS FRIDAY NIGHT INTO
SATURDAY.  MOISTURE RETURNING FROM THE GULF OF MEXICO WILL FUEL
MODERATE TO HEAVY RAIN AND THUNDERSTORMS...WITH ANY SNOW INITIALLY
BEING CONFINED TO THE VERY NORTHERN FRINGE OF THE PRECIPITATION
SHIELD.  HOWEVER....AS THE RETURN FLOW FROM THE GULF OF MEXICO
RUNS INTO AN ARCTIC AIRMASS DROPPING THROUGH THE NORTH CENTRAL
U.S...AN AXIS OF MODERATE TO HEAVY SNOW IS EXPECTED TO DEVELOP
ACROSS THE MIDWEST.  THE MOST SIGNIFICANT SNOW WILL BE NEAR A
SURFACE LOW SPINNING UP OVER THE MIDDLE MISSISSIPPI VALLEY SUNDAY
MORNING.

HEAVY SNOWS AND STRONG WINDS ARE EXPECTED ACROSS MAINE FRIDAY
NIGHT AS AN ABUNDANCE OF ATLANTIC MOISTURE WRAPS INLAND AROUND A
SURFACE LOW RAPIDLY DEEPENING OFFSHORE.  THE COASTAL LOW SHOULD
STEADILY LIFT TOWARDS THE CANADIAN MARITIMES ON
SATURDAY...ALLOWING THE SNOW AND WINDS TO DIMINISH OVER NEW
ENGLAND.


GERHARDT

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




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