SPC AC 310033
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0733 PM CDT SAT MAY 30 2009
VALID 310100Z - 311200Z
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PORTIONS OF THE OH
VLY...
...OH VLY...
MID-LVL JET STREAK NOSING INTO CNTRL IL HAS BEEN SUPPORTING A FAIRLY
EXTENSIVE ZONE OF WDLY SCTD TSTMS FROM THE WV/KY COALFIELDS NWWD
INTO CNTRL IL. FORTY-50 KT OF DEEP LAYER SHEAR...LARGELY
STRAIGHT-LINED HODOGRAPHS AND 1500-2000 J/KG MLCAPE WILL CONTINUE TO
BE SUPPORTIVE FOR OCCASIONAL SPLITTING SUPERCELLS WITH PRIMARILY
LARGE HAIL AND DMGG WIND GUSTS. SVR THREAT MAY PERSIST WELL INTO
THE EVENING ACROSS SRN IND...NRN/ERN KY...EXTREME SRN OH AND SRN WV
AS THE MID-LVL WAVE CONTINUES ESEWD TOWARD THE CNTRL APLCNS. WSW
LLJ OF 30-35 KTS BLOWING STEEP LAPSE RATE AND RELATIVELY MOIST
PARCELS INTO THIS REGION WILL SUPPORT EVOLUTION INTO A LOOSELY
ORGANIZED MCS WITH STRONGEST CELLS LIKELY FAVORING THE S AND W SIDES
OF THE TSTM CLUSTER.
..RACY.. 05/31/2009
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z
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