000
ACUS11 KWNS 100937
SWOMCD
SPC MCD 100937
PAZ000-MDZ000-DCZ000-VAZ000-WVZ000-KYZ000-101330-

MESOSCALE DISCUSSION 2074
NWS STORM PREDICTION CENTER NORMAN OK
0337 AM CST TUE DEC 10 2013

AREAS AFFECTED...SRN/ERN WV...NRN VA...SRN PA...WRN/CNTRL MD...DC

CONCERNING...HEAVY SNOW

VALID 100937Z - 101330Z

SUMMARY...SNOW WILL INCREASE IN INTENSITY OVER THE NEXT FEW HOURS
WITH RATES APPROACHING ONE INCH PER HOUR ACROSS PORTIONS OF WV/NWRN
VA.  ELSEWHERE...MODERATE SNOW IS EXPECTED TO SPREAD TOWARD THE
DELMARVA WITH RATES IN EXCESS OF HALF INCH PER HOUR POSSIBLE BY
DAYBREAK.

DISCUSSION...INCREASING PRECIPITATION SHIELD IS GRADUALLY EXPANDING
ACROSS THE CNTRL APPALACHIANS AHEAD OF PROGRESSIVE UPPER TROUGH.
OVER THE LAST FEW HOURS HEAVIER CONVECTIVE ELEMENTS OVER WRN VA/SRN
WV HAVE COALESCED INTO A BROADER CORRIDOR OF MODERATE TO LOCALLY
HEAVY SNOW...PER LOWERING VISIBILITIES AT KBKW.  LATEST SFC ANALYSIS
AND FORECAST SOUNDINGS SUGGEST SNOW/SLEET LINE SHOULD EXTEND FROM
THE SRN WV/VA BORDER...NEWD ACROSS NRN VA TOWARD THE DC REGION
THROUGH 13Z.  WITH TIME BOUTS OF HEAVY SNOW SHOULD EXTEND ACROSS NRN
DE/SERN PA INTO NJ BUT THIS MAY NOT OCCUR UNTIL AFTER SUNRISE.

..DARROW.. 12/10/2013

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

ATTN...WFO...CTP...LWX...RNK...PBZ...RLX...JKL...

LAT...LON   38558204 39697964 39997807 39847704 39227668 38787702
            38057931 37708050 37418178 37818253 38558204