SWOMCD
SPC MCD 092235
OHZ000-INZ000-100000-
MESOSCALE DISCUSSION 1920
NWS STORM PREDICTION CENTER NORMAN OK
0535 PM CDT TUE AUG 09 2011
AREAS AFFECTED...CNTRL IND...NRN/CNTRL OH
CONCERNING...SEVERE THUNDERSTORM WATCH 753...
VALID 092235Z - 100000Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 753
CONTINUES.
DAMAGING WIND AND MARGINAL HAIL THREATS CONTINUE WITH SEMI-DISCRETE
CELLS ALONG AND AHEAD OF A COLD FRONT...WHICH MAY TEND TO GROW
UPSCALE INTO SHORT-LINE SEGMENTS. PORTIONS OF THE WW BEHIND THE
FRONT CAN BE CLEARED...WHILE DOWNSTREAM INTO NRN OH AN EXTENSION IN
AREA MAY BECOME NECESSARY IN THE NEXT HOUR.
22Z SURFACE ANALYSIS PLACED A COLD FRONT FROM SERN LOWER MI SWWD TO
CNTRL IND WITH SCATTERED CELLS ALONG AND AHEAD OF THE FRONT. PRIMARY
THREAT WILL REMAIN STRONG TO SEVERE WIND GUSTS /56 KT MEASURED AT
FWA AT 2207Z/...GIVEN 30-40 W/NWLYS PREVALENT AT 2-4 KM AGL PER AREA
VWP DATA. THESE UNIDIRECTIONAL WIND PROFILES NEARLY PERPENDICULAR TO
THE INITIATING BOUNDARY HAVE FOSTERED MAINLY DISCRETE CELLS SO
FAR...BUT UPSCALE GROWTH INTO SHORT-LINE SEGMENTS APPEARS PLAUSIBLE
PER INDICATIONS BY RECENT HRRR GUIDANCE.
..GRAMS.. 08/09/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PBZ...CLE...ILN...IWX...IND...
LAT...LON 39968680 40598533 41288417 41578308 41768127 41608105
40688155 40178233 39848421 39558562 39718665 39968680
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