213 
ACUS11 KWNS 101540
SWOMCD
SPC MCD 101539 
INZ000-KYZ000-ILZ000-101745-

MESOSCALE DISCUSSION 0907
NWS STORM PREDICTION CENTER NORMAN OK
1039 AM CDT SAT MAY 10 2003

AREAS AFFECTED...ECENTRAL IL...CENTRAL IND

CONCERNING...TORNADO WATCH 335...

VALID 101539Z - 101745Z

TORNADIC SUPERCELL OVER NRN PUTNAM COUNTY WILL CONTINUE TO TRACK
ENEWD AROUND 20 KTS THROUGH 17/00Z ALONG AN ADVANCING WARM FRONT
ACROSS HENDRICKS AND INTO NRN MARION/SRN HAMILTON COUNTIES.
ADDITIONAL SUPERCELL DEVELOPMENT WITH AN ATTENDANT RISK FOR
TORNADOES WILL BE POSSIBLE OVER THE ERN INDIANAPOLIS METRO AREA EWD
INTO ECENTRAL IND ALONG THE WARM FRONT OVER THE NEXT FEW HOURS.
FARTHER WEST...WELL DEFINED MCV WILL SUSTAIN SEVERE CONVECTIVE
THREAT OVER ECENTRAL IL INTO WCENTRAL IND THROUGH 03/17Z. STRONG LOW
LEVEL SHEAR /250-300 M2/S2 0-2 KM HELICITY ON RECENT PAH VWP/ WILL
SUPPORT THE THREAT FOR ISOLATED TORNADOES WITH THIS ACTIVITY.
HOWEVER STRONG PRESSURE RISES BEHIND THE CONVECTION WILL SUPPORT A
WELL ORGANIZED OUTFLOW WITH STRONG DAMAGING WINDS THE PRIMARY THREAT
WITH THIS ACTIVITY.

..CROSBIE.. 05/10/2003

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

ATTN...WFO...ILN...LMK...IND...ILX...LSX...

38708876 39558872 40258749 40248539 38658541