SWOMCD
SPC MCD 162348
VAZ000-MDZ000-NCZ000-DCZ000-WVZ000-170045-
MESOSCALE DISCUSSION 1774
NWS STORM PREDICTION CENTER NORMAN OK
0648 PM CDT THU AUG 16 2007
AREAS AFFECTED...CNTRL/SRN VA AND EXTREME NRN NC
CONCERNING...SEVERE THUNDERSTORM WATCH 606...
VALID 162348Z - 170045Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 606
CONTINUES.
TSTMS THAT DEVELOPED OVER THE VA HIGHLANDS EARLY THIS AFTN HAVE
GROWN UPSCALE INTO A SMALL MCS WITH STRONG PREFERENTIAL DEVELOPMENT
ALONG THE SRN END INTO THE STRONGER INSTABILITY AXIS. THUS...MEAN
MOTION HAS TRENDED MORE SLY OVER THE PAST COUPLE OF HOURS.
DOWNSTREAM AIR MASS HEATED CONSIDERABLY TODAY RESULTING IN
INVERTED-V TYPE STRUCTURES. GIVEN THE MEAN WNWLY FLOW
ALOFT...ACTIVITY WILL LIKELY CONTINUE TO POSE A DMGG WIND THREAT
THROUGH MID-EVENING. HIGHEST THREAT FOR DMGG WINDS WILL EXIST
ACROSS THE RICHMOND METRO AREA THROUGH 0030Z.
MEANWHILE...UPSTREAM...MCV HAS EVOLVED OVER THE MID-OH VLY WITH
ENHANCED WARM ADVECTION DOWNSTREAM ACROSS CNTRL WV. TSTMS HAVE BEEN
DEVELOPING RAPIDLY EAST OF CHARLESTON INTO POCAHONTAS COUNTY WV
ALONG A WEAK BOUNDARY. THIS ACTIVITY MAY SPREAD E OF THE HIGHER
TERRAIN INTO WRN PORTION OF THE WW LATER THIS EVENING BRINGING A
RENEWED THREAT FOR DMGG WIND GUSTS.
.RACY.. 08/16/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PHI...AKQ...MHX...LWX...RAH...RNK...
37348033 38677930 38997858 38967721 38847617 38387565
37667574 36717637 36017706 35817798 35977924 36118002
36678046
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