SPC MESOSCALE DISCUSSION 0680 FOR E CNTRL TX
CONCERNING...SEVERE THUNDERSTORM POTENTIAL...

VALID 062315Z - 070100Z

SUPERCELL STORMS MAY DEVELOP FARTHER EWD INTO E CNTRL TX BY 00Z.
LARGE HAIL AND DAMAGING WIND WILL BE LIKELY. POTENTIAL FOR ISOLATED
TORNADOES WILL ALSO EXIST. WW MAY BE NEEDED WITHIN THE NEXT HOUR OR
SO.

ATMOSPHERE HAS BECOME VERY UNSTABLE OVER E-CNTRL TX WITH MLCAPES
FROM 2500 TO 3000 J/KG. SUPERCELL STORMS CURRENTLY OVER CNTRL TX
ARE MOVING SLOWLY SEWD...AND SOME OF THE STORMS MAY BEGIN TO MOVE
OUT OF WW 204 AND INTO E CNTRL TX BY 00Z. OTHER STORMS MAY DEVELOP
FARTHER E. GIVEN DEGREE OF INSTABILITY...DEEP LAYER SHEAR AROUND 40
KT IS FAVORABLE FOR SUPERCELLS. LOW LEVEL SHEAR APPEARS MARGINAL
FROM A GROUND RELATIVE PERSPECTIVE. HOWEVER...STORMS MOVING TO THE
RIGHT OF THE MEAN FLOW WILL ENHANCE THEIR STORM RELATIVE HELICITY
AND INFLOW AND MAY BECOME CAPABLE OF PRODUCING ISOLATED TORNADOES. 

..DIAL.. 05/06/01