Severe Thunderstorm Watch 289

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 289
NWS STORM PREDICTION CENTER NORMAN OK
330 PM CDT FRI MAY 9 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTH CENTRAL TEXAS
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 330 PM UNTIL
1000 PM CDT.
HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES WEST
SOUTHWEST OF JUNCTION TEXAS TO 60 MILES SOUTHEAST OF AUSTIN
TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...
WW 287
...
WW 288
...
DISCUSSION...TSTMS ARE EXPECTED TO DEVELOP ALONG A STALLED AND
WEAKLY CONVERGENT FRONTAL ZONE...AND NEAR FRONT/DRYLINE
INTERSECTION...FROM THE ESCARPMENT EWD ACROSS SCNTRL TX NEXT FEW
HOURS. THIS ACTIVITY WILL TAP VERY UNSTABLE AIR MASS ACROSS THE
REGION AND...COUPLED WITH 45-55KT EFFECTIVE BULK SHEAR...POSE A
THREAT OF VERY LARGE HAIL AND HIGH WINDS. STORMS MAY CONGEAL INTO A
SMALL MCS LATER THIS EVENING WITH WIND/HAIL POTENTIAL SPREADING
EWD/SEWD TOWARD SE TX COASTAL PLAIN.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 28020.
...CARBIN