Severe Thunderstorm Warning 87, NWS Austin/San Antonio, TX

TXZ171>173-183>194-202>209-217>225-228-112300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
245 PM CDT TUE MAY 11 1999

...THREAT OF SEVERE WEATHER LATE THIS AFTERNOON AND TONIGHT...
...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE HILL
COUNTRY AND MOST OF SOUTH CENTRAL TEXAS...

TO THE NORTH AND WEST...CONVECTION HAS BEGUN OVER THE HILL COUNTRY
AHEAD OF THE COLD FRONTAL BOUNDARY BETWEEN SAN ANGELO AND
JUNCTION. THE PRESENCE OF THE COLD FRONT...A VERY UNSTABLE AIRMASS
OVER SOUTH TEXAS AND VERY WARM DAYTIME HIGHS...WILL TRIGGER STRONG TO
SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND THIS EVENING OVER THE
HILL COUNTRY. THE STORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL AND
WIND GUSTS IN EXCESS OF 60 MPH AS THEY MOVE EAST ACROSS THE HILL
COUNTRY INTO SOUTH CENTRAL TEXAS. AN UPPER LEVEL DISTURBANCE WILL
INTERACT WITH THE COLD FRONT THIS EVENING...INCREASING THE CHANCES OF
SEVERE THUNDERSTORM DEVELOPMENT.

AS THE EVENING PROGRESSES INTO THE OVERNIGHT HOURS...THE STORMS WILL
EVOLVE INTO HEAVY RAIN PRODUCERS. A FLASH FLOOD WATCH REMAINS IN
EFFECT TONIGHT ALONG AND EAST OF A LINE FROM MENARD TO ROCKSPRINGS TO
HONDO TO KARNES CITY AND CUERO.

LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM
SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS
SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN
YOUR AREA.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL TELEVISION OR RADIO
STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS
CONCERNING THIS POTENTIALLY DANGEROUS SEVERE WEATHER THREAT.

TXZ171>173-183>194-202>209-217>225-228-112300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
245 PM CDT TUE MAY 11 1999

...THREAT OF SEVERE WEATHER LATE THIS AFTERNOON AND TONIGHT...
...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE HILL
COUNTRY AND MOST OF SOUTH CENTRAL TEXAS...

TO THE NORTH AND WEST...CONVECTION HAS BEGUN OVER THE HILL COUNTRY
AHEAD OF THE COLD FRONTAL BOUNDARY BETWEEN SAN ANGELO AND
JUNCTION. THE PRESENCE OF THE COLD FRONT...A VERY UNSTABLE AIRMASS
OVER SOUTH TEXAS AND VERY WARM DAYTIME HIGHS...WILL TRIGGER STRONG TO
SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND THIS EVENING OVER THE
HILL COUNTRY. THE STORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL AND
WIND GUSTS IN EXCESS OF 60 MPH AS THEY MOVE EAST ACROSS THE HILL
COUNTRY INTO SOUTH CENTRAL TEXAS. AN UPPER LEVEL DISTURBANCE WILL
INTERACT WITH THE COLD FRONT THIS EVENING...INCREASING THE CHANCES OF
SEVERE THUNDERSTORM DEVELOPMENT.

AS THE EVENING PROGRESSES INTO THE OVERNIGHT HOURS...THE STORMS WILL
EVOLVE INTO HEAVY RAIN PRODUCERS. A FLASH FLOOD WATCH REMAINS IN
EFFECT TONIGHT ALONG AND EAST OF A LINE FROM MENARD TO ROCKSPRINGS TO
HONDO TO KARNES CITY AND CUERO.

LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM
SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS
SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN
YOUR AREA.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL TELEVISION OR RADIO
STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS
CONCERNING THIS POTENTIALLY DANGEROUS SEVERE WEATHER THREAT.

TXZ171-172-183>190-121100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
600 PM CDT TUE MAY 11 1999

...TORNADO WATCH IN EFFECT TIL 10 PM FOR CENTRAL AND SOUTH CENTRAL
   TEXAS...
...FLASH FLOOD WATCH IN EFFECT TONIGHT FOR THE TEXAS HILL COUNTRY
   AND MUCH OF SOUTH CENTRAL TEXAS...

HAZARDOUS WEATHER IS EXPECTED TONIGHT AND WEDNESDAY.  A MOIST AND
UNSTABLE AIRMASS REMAINS OVER SOUTH CENTRAL TEXAS AND THE HILL
COUNTRY.  STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TO MOVE INTO
THE HILL COUNTRY AND SOUTH CENTRAL TEXAS THIS EVENING AND TONIGHT.

THE TORNADO WATCH FOR CENTRAL AND SOUTH CENTRAL TEXAS MEANS
CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS.
TORNADOES...HAIL TO THREE INCHES IN DIAMETER...STRONG GUSTY WINDS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE.

THE FLASH FLOOD WATCH FOR THE HILL COUNTRY AND MUCH OF SOUTH CENTRAL
TEXAS MEANS THIS AREA WILL RECEIVE AN ADDITIONAL ONE TO THREE INCHES
OF RAIN WITH ISOLATED AMOUNTS UP TO FIVE INCHES POSSIBLE. THIS AREA
HAS ALREADY RECEIVED HEAVY RAINFALL FROM THE STORMS SUNDAY NIGHT AND
MONDAY.

THE ADDITIONAL HEAVY RAINFALL ACROSS THE WATCH AREA WILL RESULT
IN RAPID RUNOFF AND FLASH FLOODING.  RESIDENTS IN THE WATCH AREA
SHOULD MONITOR THE LATEST WEATHER DEVELOPMENTS CONCERNING THIS HEAVY
RAINFALL EVENT.  STAY INFORMED OF THE WEATHER AND RIVER FORECASTS AND
BULLETINS...AND BE READY TO TAKE IMMEDIATE ACTION TO SAFEGUARD LIFE
AND PROPERTY IF FLASH FLOODING OR VERY HEAVY RAINFALL IS OBSERVED...
OR IF A WARNING IS ISSUED.  IF YOU ARE IN A VEHICLE...DO NOT ATTEMPT
TO DRIVE ACROSS FLOODED ROADWAYS

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION
STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS
CONCERNING THIS DANGEROUS SEVERE WEATHER AND FLASH FLOOD THREATS.

LAW ENFORCEMENT AGENCIES...EMERGENCY MANAGEMENT OFFICIALS...STORM
SPOTTER GROUPS...AND OTHER INTERESTED CONCERNS SHOULD MONITOR THIS
SITUATION AND TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN
YOUR AREA.