200 
ACUS11 KWNS 092137
SWOMCD
SPC MCD 092136 
WVZ000-OHZ000-092330-

MESOSCALE DISCUSSION 0882
NWS STORM PREDICTION CENTER NORMAN OK
0436 PM CDT FRI MAY 09 2003

AREAS AFFECTED...CENTRAL/SERN OH AND WRN/NWRN WV

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 092136Z - 092330Z

ISOLATED SEVERE THUNDERSTORMS LOCATED SOUTH AND SE OF CMH AT 2120Z
WILL TRACK 285/20-25KT REACHING THE SERN OH/NWRN WV BORDER AROUND
23Z. CONTINUED THREAT OF LARGE HAIL AND DAMAGING WINDS WILL
NECESSITATE A WW ACROSS THIS AREA SOON.

A WELL-DEFINED SURFACE WARM FRONT BISECTS OH FROM NW-SE...AND
EXTENDS FURTHER SEWD INTO CENTRAL WV. LOW-LEVEL SWLY FLOW EVIDENT ON
ILN VAD IS PROVIDING LOW-LEVEL WARM ADVECTION/UVV IN VICINITY OF THE
FRONT WHICH HAS BEEN SUFFICIENT FOR THUNDERSTORM DEVELOPMENT SOUTH
AND SE OF CMH. WNWLY DEEP-LAYER SHEAR WILL TAKE STORMS ESEWD ALONG
THE BAROCLINIC ZONE DURING THE NEXT FEW HOURS. OBJECTIVE ANALYSIS
FIELDS INDICATE MODERATE INSTABILITY WITH 100MB MLCAPE VALUES OF
2000-2500 J/KG ACROSS THE DISCUSSION AREA...ALONG AND SOUTH OF THE
FRONT. PRIMARY THREAT SHOULD BE HAIL/DAMAGING WINDS. HOWEVER...VERY
HIGH BOUNDARY LAYER RH VALUES /SURFACE DEWPOINTS IN THE LOW 70S/
COMBINED WITH LOCALLY ENHANCED SRH IN THE FRONTAL ZONE SUGGESTS AN
ISOLATED TORNADO MAY BE POSSIBLE WITH THESE STORMS.

..BANACOS.. 05/09/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PBZ...RLX...CLE...ILN...

38988225 39688346 40008356 40328313 40258204 39868148
39348080 38818032 38368072 38988224