already starting(not the main show)
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 292
NWS STORM PREDICTION CENTER NORMAN OK
1010 AM CDT SAT MAY 10 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN ARKANSAS
NORTHERN LOUISIANA
WEST-CENTRAL MISSISSIPPI
EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1010 AM UNTIL
400 PM CDT.
DISCUSSION...WELL-DEFINED WARM FRONT CURRENTLY ALONG LA/AR BORDER
EAST TO CNTRL MS WILL CONTINUE TO LIFT NWD ACROSS WATCH AREA INTO
THE AFTERNOON AS INCREASING LARGE SCALE ASCENT SPREADS EAST WITH
STRONG UPPER WAVE. INCREASINGLY MOIST/UNSTABLE AIR MASS WILL FUEL
TSTM DEVELOPMENT WITH SURFACE-BASED SUPERCELLS MOST LIKELY
DEVELOPING ACROSS THE AREA LATER THIS AFTERNOON. SHEAR PROFILES IN
THE WARM SECTOR...AND ESPECIALLY NEAR THE WARM FRONT...ARE FORECAST
TO BE QUITE SUPPORTIVE OF LOW LEVEL STORM ROTATION/MESOCYCLONES WITH
EFFECTIVE SRH VALUES IN SOME AREAS FORECAST TO EXCEED 200 M2/S2.
THUS...A FEW TORNADIC SUPERCELLS APPEAR POSSIBLE WITH ADDITIONAL
THREATS OF LARGE HAIL AND DAMAGING OUTFLOW WINDS.
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