SWOMCD
SPC MCD 042313
NJZ000-DEZ000-MDZ000-VAZ000-DCZ000-WVZ000-OHZ000-KYZ000-INZ000-050015-
MESOSCALE DISCUSSION 1210
NWS STORM PREDICTION CENTER NORMAN OK
0613 PM CDT WED JUN 04 2008
AREAS AFFECTED...SRN OH...WV...NRN VA...MD...DE
CONCERNING...SEVERE THUNDERSTORM WATCH 447...
VALID 042313Z - 050015Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 447
CONTINUES.
THE SEVERE THREAT WILL CONTINUE THIS EVENING ACROSS THE REGION. A
FEW TORNADOES ALONG WITH LARGE HAIL AND WIND DAMAGE WILL BE POSSIBLE
WITH ORGANIZED STORM CLUSTERS. A REPLACEMENT WW WILL BE ISSUED BY
2330Z.
SFC ANALYSIS SHOWS A QUASI-STATIONARY FRONT EXTENDING EWD ACROSS NRN
OH AND PA WITH RUC GUIDANCE INDICATING MODERATE INSTABILITY SOUTH OF
THE BOUNDARY. THIS COMBINED WITH STRONG VERTICAL SHEAR ASSOCIATED
WITH A 55 TO 70 KT MID-LEVEL SPEED MAX CENTERED OVER WV WILL SUPPORT
AN ORGANIZED SEVERE THREAT THIS EVENING. UNIDIRECTIONAL WINDS AND
STRONG MID-LEVEL FLOW WILL BE FAVORABLE FOR WIND DAMAGE. THE SHEAR
AND INSTABILITY WILL ALSO BE SUFFICIENT FOR SUPERCELLS WITH LARGE
HAIL AND A FEW TORNADOES.
..BROYLES.. 06/04/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...ILN...
38187452 37907725 38158096 38818407 39598497 40088466
40048338 39478040 39347538 38917426
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