National Weather Service Weather Forecast Office

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
506 PM CST FRI FEB 15 2008

...MORE STRONG SOUTHERLY WINDS EXPECTED FOR SATURDAY...

...STRONG THUNDERSTORM DEVELOPMENT IS POSSIBLE SATURDAY NIGHT
THROUGH EARLY SUNDAY MORNING...

SOUTH WINDS OF 25 TO 35 MPH WITH GUSTS OVER 40 MPH ARE EXPECTED
OVER COASTAL AREAS OF DEEP SOUTH TEXAS BY SATURDAY AFTERNOON AS A
POTENT UPPER LEVEL LOW APPROACHES. THIS UPPER LEVEL LOW WILL
INDUCE A STRONG LOW LEVEL JET OF 45 TO 50 KNOTS OVER THE EASTERN
PORTIONS OF THE RIO GRANDE VALLEY. AS THE SUN RISES
SATURDAY...MIXING WILL OCCUR...TRANSLATING SOME OF THESE HIGH
WINDS TO THE SURFACE. A WIND ADVISORY WILL LIKELY BE POSTED FOR
EASTERN PORTIONS OF THE RIO GRANDE VALLEY OVERNIGHT.

IN ADDITION TO THESE STRONG SOUTHERLY WINDS...THIS UPPER LEVEL LOW
WILL BRING MOISTURE AND DESTABILIZATION OF THE AIRMASS OVER THE RIO
GRANDE VALLEY SATURDAY AFTERNOON THROUGH EARLY SUNDAY MORNING.
AMPLE LIFT GENERATED FROM A WEAK...SLOW MOVING BOUNDARY AND ASSISTED BY
AN AGGRESSIVE UPPER LEVEL JET MOVING OVERHEAD LATE SATURDAY NIGHT
BRINGS THE POSSIBILITY OF SEVERE THUNDERSTORMS TO MAINLY COASTAL
AREAS LATE SATURDAY NIGHT THROUGH EARLY SUNDAY MORNING. THIS WOULD
INCLUDE THE MARINE AREAS OF THE DEEP SOUTH TEXAS COAST.

THE MAIN THREATS WILL BE LARGE HAIL...DAMAGING STRAIGHT-LINE
WINDS...AND THE POSSIBILITY OF TORNADOES.

RESIDENTS OF DEEP SOUTH TEXAS SHOULD PREPARE FOR RAPIDLY CHANGING
WEATHER CONDITIONS LATE SATURDAY NIGHT...AND TAKE ACTION IF
WARNINGS ARE ISSUED.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR
TELEVISION FOR THE LATEST WEATHER INFORMATION.