Friday, April 25, 2008

Mesoscale Discussion 738, Concerning Severe Thunderstorm Watch 235, Tornadic Supercell In Progress!

MESOSCALE DISCUSSION 0738
NWS STORM PREDICTION CENTER NORMAN OK
0702 PM CDT FRI APR 25 2008
AREAS AFFECTED...CENTRAL TX
CONCERNING...SEVERE THUNDERSTORM WATCH
235
...
VALID 260002Z - 260130Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 235
CONTINUES.
TORNADIC SUPERCELL CURRENTLY OVER BELL CO. TX SHOULD CONTINUE SWD
INTO WILLIAMSON CO. AND POSSIBLY INTO AREAS FURTHER SOUTH. THIS
STORM HAS THE POTENTIAL TO BE LONG LIVED INTO THE EARLY EVENING HRS.
VERY UNSTABLE CONDITIONS S OF THE SUPERCELL WILL CONTINUE TO
PROVIDE A VERY FAVORABLE THERMODYNAMIC ENVIRONMENT FOR UPDRAFT
STRENGTH. MEANWHILE...LARGE DEVIANT MOTION HAS CONTRIBUTED TO
ENHANCING THE AMOUNT OF STREAMWISE VORTICITY AVAILABLE FOR LOW LEVEL
MESOCYCLONE MAINTENANCE AND STRENGTH. IN ADDITION TO THE TORNADO
THREAT THE NEXT HR OR TWO...LARGE HAIL AND DAMAGING WINDS ALSO
APPEAR LIKELY WITH THIS STORM.
..SMITH.. 04/26/2008

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