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000
ACUS11 KWNS 241654
SWOMCD
SPC MCD 241653
MEZ000-242300-

MESOSCALE DISCUSSION 0042
NWS STORM PREDICTION CENTER NORMAN OK
1053 AM CST SAT JAN 24 2015

AREAS AFFECTED...COAST OF MAINE

CONCERNING...HEAVY SNOW

VALID 241653Z - 242300Z

SUMMARY...HEAVY SNOW IS EXPECTED TO DEVELOP ALONG THE COAST OF MAINE
THIS AFTERNOON. SNOWFALL RATES SHOULD REACH 1 INCH PER HOUR IS SOME
SPOTS WITHIN THE MCD AREA.

DISCUSSION...THE LATEST SFC ANALYSIS SHOWS A 990 MB LOW ABOUT 125
STATUTE MILES TO THE SOUTHEAST OF LONG ISLAND. A 70 TO 80 KT
LOW-LEVEL JET IS ANALYZED OVER THE GULF STREAM WITH THE EXIT REGION
OF A MID-LEVEL JET LOCATED NORTH OF CAPE COD. AS THE LEFT EXIT
REGION OF THE MID-LEVEL JET OVERSPREADS THE COAST OF MAINE OVER THE
NEXT FEW HOURS...LIFT WILL BECOME MARKEDLY ENHANCED. IN
ADDITION...FORECAST SOUNDINGS ALONG THE COAST OF MAINE THIS
AFTERNOON SHOW VEERING WINDS WITH HEIGHT AND CONSIDERABLE SHEAR IN
THE 850 MB TO 500 MB LAYER. THIS IS INDICATIVE OF STRONG ISENTROPIC
LIFT WHICH WILL BE FAVORABLE FOR THE DEVELOPMENT OF HEAVY SNOW
BANDS. MODERATE SNOW IS ALREADY ONGOING NEAR PORTLAND MAINE. THIS
SNOW BAND SHOULD GRADUALLY INTENSIFY AS IT EXPANDS NEWD ALONG THE
COAST OVER THE NEXT FEW HOURS. SNOWFALL RATES COULD REACH 1 INCH PER
HOUR WITHIN THE HEAVIEST PART OF THE BAND. AREAS ALONG THE COAST TO
THE EAST AND NORTHEAST OF AUGUSTA MAINE SHOULD BE AFFECTED AFTER
18Z.

..BROYLES/CORFIDI.. 01/24/2015

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

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

LAT...LON   44366773 43706963 43267040 43247082 43707093 44287035
            45306729 44786697 44366773