Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 310259
SWOMCD
SPC MCD 310258
MEZ000-310900-

MESOSCALE DISCUSSION 0047
NWS STORM PREDICTION CENTER NORMAN OK
0858 PM CST FRI JAN 30 2015

AREAS AFFECTED...DOWN EAST MAINE VICINITY

CONCERNING...HEAVY SNOW

VALID 310258Z - 310900Z

SUMMARY...SNOWFALL RATES INCREASING TO 1" PER HOUR EXPECTED ACROSS
THE DOWN EAST ME VICINITY AND ADJACENT PORTIONS OF
CANADA...PERSISTING THROUGH THE EARLY MORNING HOURS.

DISCUSSION...LATEST SURFACE ANALYSIS REVEALS A LOW DEEPENING OFF THE
ME COAST ATTM...WITH AN INVERTED TROUGH EXTENDING NWD ACROSS ERN ME.
 THIS IS OCCURRING IN RESPONSE TO THE CONTINUED EWD PROGRESSION OF
THE SHARP/COMPLEX UPPER TROUGH CROSSING THE NERN STATES ATTM.
MODELS CONTINUE TO FOCUS INCREASING QG ASCENT ACROSS THE DOWN EAST
ME VICINITY AND INTO ADJACENT AREAS OF THE CANADIAN MARITIMES...AS
THE OFFSHORE SURFACE LOW -- AND ZONE OF WARM ADVECTION ON ITS NRN
PERIPHERY -- STRENGTHENS AND REMAINS QUASI-STATIONARY OVER THE NEXT
SEVERAL HOURS.  AS ASCENT INCREASES...A ZONE OF MODERATE TO HEAVY
SNOWFALL -- NOW BEGINNING TO DEVELOP OVER THE AREA PER LATEST RADAR
IMAGERY -- IS EXPECTED TO EXPAND/PERSIST ACROSS THE DISCUSSION AREA
INTO THE OVERNIGHT HOURS.  HIGH-RES MODELS CONFIRM THIS SCENARIO --
MOST OF WHICH ARE REMARKABLY CONSISTENT IN DEPICTING THIS ZONE OF
SUSTAINED HEAVY SNOWFALL ACROSS THE DISCUSSION AREA -- BECOMING
MAXIMIZED AFTER MIDNIGHT.

..GOSS.. 01/31/2015

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...CAR...GYX...

LAT...LON   43706945 44426939 45366866 45816838 45836776 45596724
            44696683 43706945
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