Severe Thunderstorm Warning 285, NWS Fort Worth, TX

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-012300-

SEVERE WEATHER OUTLOOK FOR NORTH TEXAS
NATIONAL WEATHER SERVICE FORT WORTH TX
1207 PM CDT TUE JUN 1 1999

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR MOST OF NORTH
TEXAS LATE THIS AFTERNOON AND TONIGHT. HE SLIGHT RISK AREA IS NORTH
AND EAST OF AN ATHENS...BROWNWOOD...BRECKENRIDGE...BOWIE LINE. THIS
INCLUDES THE CITIES OF PARIS...SHERMAN...CORSICANA...MINERAL WELLS...
JACKSBORO AND THE DALLAS/FORT WORTH METROPLEX. THE MAIN THREAT WILL
BE VERY LARGE HAIL AND DAMAGING DOWNBURST WINDS.

LATE THIS MORNING...A WEAK COLD FRONT STRETCHED FROM OKLAHOMA CITY
TO WEST OF WICHITA FALLS TO MIDLAND. THIS FRONT HAS MOVED VERY
LITTLE DURING THE MORNING HOURS BUT IT IS EXPECTED TO BEGIN A SLOW
EASTWARD PUSH THIS AFTERNOON. THE FRONT WILL SERVE AS A FOCUS FOR
THUNDERSTORM DEVELOPMENT.

ATMOSPHERIC INSTABILITY ACROSS THE OUTLOOK AREA IS ALREADY EXTREMELY
HIGH. LIFTED INDICES AT 11 AM RANGED FROM -8 TO -10. THE STRENGTH
OF THE CAPPING INVERSION HAS BEEN WEAKENING THIS MORNING...ESPECIALLY
ALONG A LINE FROM BOWIE TO BRECKENRIDGE TO BROWNWOOD. THIS MORNINGS
MODEL RUNS FORECAST THE CAP TO CONTINUE WEAKENING ALONG THIS SAME
LINE THROUGH LATE AFTERNOON. ANY THUNDERSTORMS THAT CAN BREAK THE
CAP WILL QUICKLY BECOME SEVERE.

THE PRIMARY THUNDERSTORM THREAT WILL BE FROM VERY LARGE HAIL...
POSSIBLY UP TO BASEBALL SIZE...AND DAMAGING WINDS. FORECAST WIND
PROFILES ARE ALSO FAVORABLE FOR SUPERCELLS...SO TORNADOES CAN NOT BE
RULED OUT.

STORM SPOTTERS AND EMERGENCY MANAGERS IN THE SLIGHT RISK AREA SHOULD
BE PREPARED FOR POSSIBLE ACTIVATION..AFTER 3 PM...WEST OF A LINE
FROM GAINESVILLE TO MINERAL WELLS AND BROWNWOOD. SPOTTERS MAY BE
REQUIRED EAST OF THIS LINE ANYTIME AFTER 6 PM.