SWOMCD
SPC MCD 092323
NJZ000-PAZ000-DEZ000-MDZ000-VAZ000-DCZ000-WVZ000-OHZ000-KYZ000-INZ000-100030-
MESOSCALE DISCUSSION 1703
NWS STORM PREDICTION CENTER NORMAN OK
0623 PM CDT THU AUG 09 2007
AREAS AFFECTED...CNTRL/SRN OH...SW PA...NRN W VA
CONCERNING...SEVERE THUNDERSTORM WATCH 575...
VALID 092323Z - 100030Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 575
CONTINUES.
AN ADDITIONAL WW IS NOT ANTICIPATED.
A SIGNIFICANT DECREASE IN CONVECTIVE INTENSITY HAS BECOME EVIDENT IN
LIGHTNING DATA...WITHIN BULK OF ONGOING CONVECTION ALONG FRONTAL
ZONE EXTENDING FROM THE UPPER OHIO VALLEY INTO MID ATLANTIC COASTAL
AREAS. THE ENVIRONMENT ACROSS MUCH OF NORTHEAST OHIO/WESTERN AND
SOUTHERN PENNSYLVANIA INTO MARYLAND/NORTHERN VIRGINIA AND THE
DELMARVA HAS BEEN STABILIZED BY PRIOR CONVECTIVE ACTIVITY.
STRONG/ISOLATED SEVERE STORMS COULD PERSIST ALONG MERGING OUTFLOWS
TO THE SOUTH AND WEST OF FRONTAL ZONE...ACROSS PARTS OF
CENTRAL/SOUTHERN OHIO INTO NORTH CENTRAL WEST VIRGINIA. BUT...THE
BOUNDARY LAYER TO THE SOUTH OF THE OUTFLOW IS ALREADY COOLING OFF OF
DAYTIME HIGHS. AND...AS INHIBITION STRENGTHENS FOR BOUNDARY LAYER
BASED PARCELS WITH FURTHER COOLING NEXT FEW HOURS...THE INTENSITY OF
STORMS IS EXPECTED TO DIMINISH THROUGH 01-02Z. UNTIL THIS
OCCURS...A FEW STORMS MAY CONTINUE TO PRODUCE GUSTY WINDS/SOME HAIL.
.KERR.. 08/09/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PHI...BGM...AKQ...CTP...LWX...PBZ...RLX...CLE...ILN...IWX...IND...
38247546 38037765 38187898 38698092 38738307 39018450
39788493 40798469 41468236 41748058 41957907 41557662
40017446
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