SWOMCD
SPC MCD 070241
PAZ000-DEZ000-MDZ000-VAZ000-DCZ000-070345-
MESOSCALE DISCUSSION 0189
NWS STORM PREDICTION CENTER NORMAN OK
0841 PM CST WED FEB 06 2008
AREAS AFFECTED...NRN VA/MUCH OF MD/SERN PA
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 070241Z - 070345Z
WW MAY BE NEEDED ACROSS PART OF NRN VA THROUGH MUCH OF MD TO SERN
PA.
MID EVENING SURFACE ANALYSIS SHOWED A LOW NEAR IPT WITH A COLD FRONT
TRAILING SSWWD THROUGH FAR WRN MD INTO WRN VA TO WRN NC...WITH A
WARM FRONT EXTENDING ESEWD INTO NRN NJ. DESPITE NEUTRAL COLD MID
LEVEL ADVECTION...LOW LEVEL MOISTURE/WARM AIR ADVECTION ALONG AND IN
LEE OF THE APPALACHIANS HAS MAINTAINED WEAK INSTABILITY. WATER
VAPOR IMAGERY INDICATED A LOBE OF VORTICITY WITH MID WEST UPPER LOW
TRANSLATING EWD ACROSS SRN OH/KY. ASCENT WITH THIS FEATURE WILL
CONTINUE TO SPREAD ENEWD THIS EVENING/ TONIGHT AND MAY SUPPORT
ADDITIONAL STRONG TO SEVERE STORMS ENEWD FROM CURRENT ACTIVITY IN
SOUTH CENTRAL PA TO CENTRAL VA. RECENT INCREASE IN STORM INTENSITY
ACROSS THESE AREAS MAY BE A RESULT OF COLD FRONT BEGINNING TO
ACCELERATE EWD. DESPITE WEAK INSTABILITY...STRONG DEEP LAYER SHEAR
WILL SUPPORT AT LEAST A FEW STRONGER TO SEVERE STORMS.
.PETERS.. 02/07/2008
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PHI...AKQ...CTP...LWX...
39227775 39667744 40077698 40817623 40777551 40427524
39427568 38947589 38437615 38147654 38277758 38367835
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