Severe Thunderstorm Warning 459, NWS Fort Worth, TX

TXZ091>167-010000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1220 PM CDT WED MAY 31 1995

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING ACROSS ALL OF NORTH TEXAS.  THE PRIMARY THREAT OF SEVERE
WEATHER WILL BE FROM LARGE HAIL AND DAMAGING DOWNBURST WINDS.  IN
ADDITION...HEAVY RAINFALL IS ALSO POSSIBLE ACROSS NORTHERN AND
EASTERN PORTIONS OF NORTH TEXAS.

AT MIDDAY...A WEAK STATIONARY FRONT EXTENDED FROM NORTH OF ABILENE
THROUGH STEPHENVILLE TO THE RED RIVER NORTH OF PARIS.  TO THE SOUTH
OF THIS FRONT...MOSTLY SUNNY SKIES HAVE ALLOWED TEMPERATURES TO CLIMB
INTO THE UPPER 70S TO MID 80S...AND DEWPOINT TEMPERATURES WERE IN THE
MID TO UPPER 60S.  CONSEQUENTLY...THE ATMOSPHERE IS VERY UNSTABLE...
WITH LIFTED INDICES AT OR BELOW -8 DEGREES.  MORNING SOUNDINGS
INDICATE A CAPPING LAYER OF WARM AIR IN THE MID LEVELS OF THE
ATMOSPHERE...THUS PROHIBITING THUNDERSTORM DEVELOPMENT.

ALOFT...A WEAK UPPER LEVEL DISTURBANCE OVER THE SOUTHWESTERN UNITED
STATES...ACCOMPANIED BY A MAXIMUM IN THE JET STREAM WINDS...IS
FORECAST TO MOVE OVER THE SOUTHERN PLAINS THIS AFTERNOON.  THIS
DISTURBANCE WILL REMOVE THE CAPPING INVERSION OF WARM AIR LATER THIS
AFTERNOON...AND WILL ALLOW RAPID THUNDERSTORM DEVELOPMENT.  WHILE THE
WEAK STATIONARY FRONT WILL SERVE AS A FOCUSING MECHANISM FOR THIS
DEVELOPMENT...THUNDERSTORMS MAY FORM ANYWHERE OVER NORTH TEXAS ONCE
THE CAPPING INVERSION IS REMOVED.

WEAK WINDS IN THE LOWEST HALF OF THE ATMOSPHERE DO NOT APPEAR TO
SUPPORT TORNADIC DEVELOPMENT.  THUS THE PRIMARY THREAT OF SEVERE
WEATHER OVER NORTH TEXAS WILL BE FROM LARGE HAIL AND DAMAGING
DOWNBURST WINDS.

HEAVY RAINFALL MAY ALSO ACCOMPANY THESE THUNDERSTORMS...PARTICULARLY
OVER NORTHERN AND EASTERN PORTIONS OF NORTH TEXAS.  THE AIRMASS IS
MOIST THROUGH A LARGE DEPTH OF THE ATMOSPHERE...AND BECAUSE THE LOW
AND MID LEVEL WINDS ARE WEAK...STORMS THAT DEVELOP OVER THESE AREAS
WILL MOVE SLOWLY.  THUS THERE IS A THREAT OF FLASH FLOODING THIS
AFTERNOON AND EVENING OVER NORTHERN AND EASTERN PORTIONS OF NORTH
TEXAS GENERALLY NORTH AND EAST OF A JACKSBORO...CLEBURNE...TYLER...TO
CARTHAGE LINE.

EMERGENCY MANAGEMENT OFFICIALS...STORM SPOTTER GROUPS...AND LAW
ENFORCEMENT AGENCIES ACROSS NORTH TEXAS MAY REQUIRE ACTIVATION LATER
THIS AFTERNOON AND EVENING.

STAY TUNED TO NOAA WEATHER RADIO...OR LOCAL TELEVISION OR RADIO
STATIONS...FOR LATER INFORMATION CONCERNING THIS POTENTIAL SEVERE
WEATHER THREAT.

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