SPC MESOSCALE DISCUSSION 1177 FOR WEST CENTRAL AND SOUTHWEST
OKLAHOMA/NORTHWEST AND WEST CENTRAL TEXAS
CONCERNING...SEVERE THUNDERSTORM POTENTIAL...

VALID 140444Z - 140730Z

THUNDERSTORMS CONTINUE TO DEVELOP ACROSS PORTIONS OF THE SOUTHERN
TEXAS PANHANDLE AND NORTHWEST TEXAS.  IF ADDITIONAL DEVELOPMENT AND
STRENGTHENING IS NOTED...A WEATHER WATCH COULD BE REQUIRED.

LATEST RADAR LOOPS SHOW SCATTERED THUNDERSTORMS DEVELOPING OVER THE
HIGHER TERRAIN OF NORTHWEST TEXAS.  SURFACE OBSERVATIONS/RADAR DATA
INDICATE THE DRYLINE IS RETREATING WESTWARD...ALLOWING LOW LEVEL
MOISTURE TO RETURN TO THE AREA.  VERY STRONG INSTABILITY CONTINUES
ACROSS THE AREA...ESPECIALLY OVER NORTHWEST TEXAS AND SOUTHWESTERN
OKLAHOMA.  A POWERFUL LOW LEVEL JET IS FORECAST TO DEVELOP DURING
THE NIGHT...AND WITH FORCING IN THE VICINITY OF THE DRYLINE...
OTHER STORMS MAY DEVELOP DURING THE OVERNIGHT HOURS.  WIND PROFILES
WILL LIKELY EXHIBIT VEERING STRUCTURES...BUT SPEEDS ABOVE THE LOW
LEVEL JET DIMINISH QUICKLY.  THERE WILL BE SUFFICIENT DIRECTIONAL
SHEAR FOR SUPERCELLS...WITH LARGE HAIL AND DAMAGING WINDS THE
PRIMARY THREAT...ALTHOUGH AN ISOLATED TORNADO OR TWO CAN NOT BE
DISCOUNTED.

..REHBEIN.. 06/14/01