SPC MESOSCALE DISCUSSION 0034 FOR CENTRAL/ERN WV...NRN
VA...PORTIONS WRN/NRN MD...CONCERNING...HEAVY SNOW...

VALID 191153Z - 191500Z

ENHANCED BELT OF SNOWFALL WITH 1-2 INCH/HOUR RATES IS EXPECTED TO
MOVE/SPREAD ENEWD FROM CENTRAL WV NE OF CRW TOWARD HGR/MRB REGION
BY ABOUT 15Z.  

LARGE PLUME OF PRECIP NOW OVER MUCH OF KY/TN AND WRN WV WILL SPREAD
EWD AND ENEWD.  PRONOUNCED FALLS FROM ERN KY TOWARD CRW IN 11Z
SURFACE ISALLOBARIC ANALYSIS REFLECTS WAA/ASCENT IN COLUMN ALOFT
ASSOCIATED WITH OBSERVED PRECIP ENHANCEMENT IN NRN PORTION OF THIS
PLUME.  ALTHOUGH MAIN ZONE OF LARGE SCALE LIFT AND MOISTURE SHOULD
REMAIN FARTHER S...SECONDARY ISENTROPIC LIFT/ELEVATED WAA MAX WILL
SUPPORT LOCALLY HEAVY SNOW WITH SOME BANDING FEATURES AS REGIME
SHIFTS ENEWD ACROSS NERN WV DURING NEXT 3-4 HOURS.  COLDNESS OF
PRECIP GENERATION LAYER IN MODIFIED MODEL SOUNDINGS SUGGEST PRECIP
TYPE WILL REMAIN SNOW.

..EDWARDS.. 01/19/02