MESOSCALE DISCUSSION 1780
NWS STORM PREDICTION CENTER NORMAN OK
0534 PM CDT FRI JUL 11 2003
AREAS AFFECTED...SERN VA / CENTRAL NC / SC / NERN GA...
CONCERNING...SEVERE THUNDERSTORM WATCH 720...723...
VALID 112234Z - 120000Z
SEVERAL ORGANIZED LINES OF THUNDERSTORMS AND ASSOCIATED SEVERE
THREAT CONTINUE MOVING EWD ACROSS WW 720 AND 723. BOTH WATCHES WILL
LIKELY BE REPLACED WITH A NEW WW SHORTLY.
MODERATELY-UNSTABLE AIRMASS /100 MB MEAN-LAYER CAPE NEAR 2000 J/KG/
EXISTS ACROSS THE ERN CAROLINAS / SERN VA AHEAD OF SEVERAL ONGOING
LINES OF STORMS. THIS COMBINED WITH MODERATELY-STRONG /
UNIDIRECTIONAL WSWLY DEEP-LAYER WIND FIELD OBSERVED OVER THE REGION
SUGGESTS THAT STORMS SHOULD REMAIN ORGANIZED / SEVERE AND EVENTUALLY
REACH THE ATLANTIC COAST.
WW 720 AND 723 ARE BOTH SCHEDULED TO EXPIRE AT 12/00Z..BUT ONGOING
CONVECTION IS NOT EXPECTED TO CLEAR THE WATCH AREAS BY THAT TIME.
THEREFORE...THESE TWO WATCHES WILL LIKELY BE REPLACED BY A NEW WW
SOON...COVERING SERN VA AND THE ERN CAROLINAS.
..GOSS.. 07/11/2003
ATTN...WFO...AKQ...MHX...RAH...ILM...CHS...CAE...
32328099 35537975 37557592 35337551 34007769
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