

503 

WWUS20 KWNS 100149

SEL0

SPC WW 100149

TXZ000-100800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 50

NWS STORM PREDICTION CENTER NORMAN OK

745 PM CST SAT MAR 9 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL TEXAS



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 745 PM

UNTIL 200 AM CST.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 95 MILES SOUTHWEST

OF JUNCTION TEXAS TO 35 MILES EAST SOUTHEAST OF TEMPLE TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 49...



DISCUSSION...LINE OF STRONG/SEVERE STORMS OVER CENTRAL TX IS

EXPECTED TO DEVELOP EWD/SEWD TONIGHT IN ADVANCE OF AN APPROACHING

DRYLINE...WITH MORE DISCRETE STORMS CONTINUING TO FORM ALONG THE

SWRN END OF THE LINE.  UPPER DIVERGENCE IN THE LEFT EXIT REGION OF A

STRONG WESTERLY UPPER LEVEL JET PROGRESSING EWD ACROSS SRN TX WILL

ENHANCE LARGE SCALE ASCENT ALONG THE COMPOSITE SEWD MOVING LOW LEVEL

BOUNDARY...WHILE MODEL GUIDANCE INDICATES LOW LEVEL WARM ADVECTION

WILL INCREASE AS THE SOUTHERLY LOW LEVEL JET STRENGTHENS TONIGHT.

STRONG VERTICAL SHEAR WILL MAINTAIN POTENTIAL FOR SEVERE STORMS

CAPABLE OF LARGE HAIL AND OCCASIONAL DAMAGING WINDS...ESPECIALLY

WITH ANY SUPERCELLS AND BOW ECHOES THAT FORM TONIGHT.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 25030.





...WEISS



778 

WWUS20 KWNS 100149

SEL0

SPC WW 100149

TXZ000-100800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 50

NWS STORM PREDICTION CENTER NORMAN OK

745 PM CST SAT MAR 9 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL TEXAS



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 745 PM

UNTIL 200 AM CST.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 95 MILES SOUTHWEST

OF JUNCTION TEXAS TO 35 MILES EAST SOUTHEAST OF TEMPLE TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 49...



DISCUSSION...LINE OF STRONG/SEVERE STORMS OVER CENTRAL TX IS

EXPECTED TO DEVELOP EWD/SEWD TONIGHT IN ADVANCE OF AN APPROACHING

DRYLINE...WITH MORE DISCRETE STORMS CONTINUING TO FORM ALONG THE

SWRN END OF THE LINE.  UPPER DIVERGENCE IN THE LEFT EXIT REGION OF A

STRONG WESTERLY UPPER LEVEL JET PROGRESSING EWD ACROSS SRN TX WILL

ENHANCE LARGE SCALE ASCENT ALONG THE COMPOSITE SEWD MOVING LOW LEVEL

BOUNDARY...WHILE MODEL GUIDANCE INDICATES LOW LEVEL WARM ADVECTION

WILL INCREASE AS THE SOUTHERLY LOW LEVEL JET STRENGTHENS TONIGHT.

STRONG VERTICAL SHEAR WILL MAINTAIN POTENTIAL FOR SEVERE STORMS

CAPABLE OF LARGE HAIL AND OCCASIONAL DAMAGING WINDS...ESPECIALLY

WITH ANY SUPERCELLS AND BOW ECHOES THAT FORM TONIGHT.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 25030.





...WEISS

