SWOMCD
SPC MCD 311801
PAZ000-MDZ000-VAZ000-WVZ000-311930-
MESOSCALE DISCUSSION 0934
NWS STORM PREDICTION CENTER NORMAN OK
0101 PM CDT THU MAY 31 2007
AREAS AFFECTED...PARTS OF THE CNTRL APPALACHIANS INTO N CNTRL
VA...CNTRL MD...SERN PA
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 311801Z - 311930Z
MID-LEVEL LAPSE RATES ARE GENERALLY WEAK...BUT STRONG HEATING OF A
MOIST BOUNDARY LAYER AIR MASS IS SUPPORTING INCREASING CONVECTIVE
DEVELOPMENT ALONG THE BLUE RIDGE AND SPINE OF THE CENTRAL
APPALACHIANS. THIS IS EMBEDDED IN WEAK SOUTHWEST TO WEST FLOW
REGIME WITHIN WARM CORE RIDGE...AND ACTIVITY WILL BE SLOW TO DEVELOP
EAST OF THE HIGHER TERRAIN THROUGH 20-21Z. BUT...ONCE THIS
OCCURS...A RELATIVELY DEEP MIXED BOUNDARY LAYER ACROSS THE PIEDMONT
WILL BE SUPPORTIVE OF LOCALIZED DOWNBURSTS AND CONSOLIDATING COLD
POOLS ACCOMPANIED BY GUSTY WINDS. SOME HAIL COULD ALSO ACCOMPANY
STRONGER CELLS ALONG AND TO THE LEE OF THE MOUNTAINS...POSSIBLY
APPROACHING OR BRIEFLY EXCEEDING SEVERE LIMITS.
.KERR.. 05/31/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...AKQ...CTP...LWX...RNK...PBZ...RLX...
39857854 39927826 39927776 39947723 39937663 39657663
39107737 38507791 38037815 37607903 37028001 37028074
37578080 39567918
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