MESOSCALE DISCUSSION 0254
   NWS STORM PREDICTION CENTER NORMAN OK
   0232 AM CDT WED MAR 23 2011
   
   AREAS AFFECTED...WRN NY/N CENTRAL AND ERN PA/NRN NJ
   
   CONCERNING...HEAVY SNOW 
   
   VALID 230732Z - 231130Z
   
   WIDESPREAD SNOWFALL RATES OF ONE INCH PER HOUR -- AND LOCALLY
   NEARING OR EXCEEDING TWO INCHES PER HOUR AT TIMES -- CAN BE EXPECTED
   OVER THE NEXT FEW HOURS ACROSS THE DISCUSSION AREA.
   
   LOW-LEVEL WARM ADVECTION CONTINUES TO INCREASE ACROSS THE CENTRAL
   APPALACHIANS/LOWER GREAT LAKES/UPPER OH VALLEY REGION ATTM...AS SWLY
   LOW-LEVEL JET TRANSLATES EWD INTO THE AREA.  A STEADY BAND OF HEAVY
   SNOW CONTINUES TO SET UP FROM SRN ONTARIO ESEWD INTO NRN NJ...AND
   WILL LIKELY REMAIN IN PLACE OVER THESE AREAS OVER THE NEXT FEW
   HOURS.
   
   WHILE WARMING FROM THE WEST SHOULD ALLOW A TRANSITION TO FREEZING
   RAIN -- AND THEN TO RAIN -- ALONG AND W OF THE WRN PERIPHERY OF THE
   DISCUSSION AREA...A BELOW-FREEZING ATMOSPHERIC COLUMN COMBINED WITH
   VERY STRONG ASCENT WILL CONTINUE TO SUPPORT A BAND OF HEAVY SNOW
   THROUGH THE EARLY MORNING AND INTO DAYBREAK.
   
   ..GOSS.. 03/23/2011
   
   
   ATTN...WFO...OKX...PHI...BGM...BUF...CTP...
   
   LAT...LON   41517766 42057919 42607992 43297936 43307885 42067580
               41087403 40497422 40517497 40597581 41517766