MESOSCALE DISCUSSION 0032
   NWS STORM PREDICTION CENTER NORMAN OK
   1137 AM CST TUE JAN 18 2011
   
   AREAS AFFECTED...WRN ME...MUCH OF NH/VT...CNTRL/WRN MA...ERN NY
   
   CONCERNING...WINTER MIXED PRECIPITATION 
   
   VALID 181737Z - 182130Z
   
   SNOWFALL RATES UP TO 1 IN/HR WILL SPREAD NEWD ACROSS CNTRL/NRN NH
   AND WRN ME DURING THE AFTERNOON...WHILE A MIXTURE OF SLEET AND
   FREEZING RAIN ARE EXPECTED OVER ERN NY INTO CNTRL/WRN MA AND
   CNTRL/SRN VT/NH.
   
   UPPER IMPULSE AND ASSOCIATED EXIT REGION OF 100 KT JET WILL CONTINUE
   TO LIFT NEWD AWAY FROM THE MID ATLANTIC REGION THIS
   AFTERNOON...WHILE RIGHT ENTRANCE REGION OF 120 KT UPPER JET
   GRADUALLY SHIFTS NEWD ACROSS NEW ENGLAND. UPPER DIVERGENCE/LARGE
   SCALE ASCENT BETWEEN THESE TWO FEATURES WILL CONTINUE TO YIELD A
   DEEPLY SATURATED ENVIRONMENT FAVORABLE FOR HEAVY PRECIPITATION OVER
   THE REGION. MEANWHILE...MESOSCALE ASCENT /LOW-LEVEL WAA AND
   ISENTROPIC UPGLIDE/ WILL BE FOCUSED IN THE EXIT REGION OF 60 KT LLJ
   MOVING NEWD FROM SRN NY ACROSS VT/NH AND INTO WRN ME BY 00Z.
   TEMPERATURE PROFILES ARE FORECAST TO BE COLD ENOUGH FOR SNOW ACROSS
   THE NRN HALF OF NH INTO WRN ME THIS AFTERNOON...WHERE STRONG ASCENT
   OCCURRING IN THE EXIT REGION OF THE LLJ WILL LIKELY FAVOR RATES UP
   TO 1 IN/HR. FARTHER S-SW...WARM NOSE ABOVE SUB-FREEZING SURFACE
   TEMPERATURES IS FORECAST TO SPREAD FROM ERN NY INTO CNTRL/WRN MA AND
   CNTRL/SRN VT/NH. AS A RESULT...A MIXTURE OF SLEET AND FREEZING RAIN
   IS EXPECTED...WITH RATES AVERAGING AROUND 0.06 IN/HR. DURING THE
   21-00Z TIME PERIOD...MODEL GUIDANCE INDICATES THAT MIDLEVEL DRY AIR
   WILL BEGIN TO SPREAD ACROSS ERN NY...WRN MA...AND MOST OF
   VT/NH...WHICH SHOULD RESULT IN DECREASING PRECIPITATION RATES.
   
   ..GARNER.. 01/18/2011
   
   
   ATTN...WFO...GYX...BOX...BTV...ALY...BGM...
   
   LAT...LON   44236947 42827101 42257202 42037360 42407479 43557403
               44827183 45306998 44236947