[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 181915
SWOMCD
SPC MCD 181915 
MDZ000-VAZ000-DCZ000-WVZ000-182015-

MESOSCALE DISCUSSION 1552
NWS STORM PREDICTION CENTER NORMAN OK
0215 PM CDT TUE JUL 18 2006

AREAS AFFECTED...CNTRL/ERN MD INTO NRN VA AND FAR ERN WV

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 181915Z - 182015Z

POTENTIAL FOR A FEW SEVERE STORMS CAPABLE OF LARGE HAIL AND DAMAGING
WINDS WILL PERSIST THROUGH THE EVENING HOURS.  A WW IS BEING
CONSIDERED.

MODIFICATION OF 18Z WAL SOUNDING FOR CURRENT SURFACE CONDITIONS
INDICATES THAT A MODERATE TO STRONGLY UNSTABLE AIR MASS HAS
DEVELOPED THIS AFTERNOON E OF THE BLUE RIDGE WITH MLCAPES OF
2500-3500 J/KG.  TSTMS DEVELOPING ALONG THE CREST OF THE
APPALACHIANS OVER ERN WV ARE EXPECTED TO MOVE SLOWLY EWD WITH
ADDITIONAL DEVELOPMENT BECOMING INCREASINGLY LIKELY EWD INTO THE
PIEDMONT AND PERHAPS THE COASTAL PLAIN AROUND CHESAPEAKE BAY LATE
THIS AFTERNOON INTO EVENING.  WHILE VERTICAL SHEAR REMAINS QUITE
WEAK...THE DEGREE OF INSTABILITY WILL BE SUPPORTIVE OF A FEW SEVERE
STORMS CAPABLE OF LARGE HAIL AND DAMAGING WINDS.

..MEAD.. 07/18/2006

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

ATTN...WFO...PHI...AKQ...LWX...RNK...

38087948 38707936 39157896 39527828 39687770 39697692
39497635 38787606 37837671 37457773 37427879 

WWWW