

389 

WWUS20 KWNS 160438

SEL2

SPC WW 160438

TXZ000-161100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 162

NWS STORM PREDICTION CENTER NORMAN OK

1130 PM CDT WED MAY 15 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTH CENTRAL INTO EAST CENTRAL TEXAS



* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1130

  PM UNTIL 600 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH

NORTHEAST OF CORSICANA TEXAS TO 25 MILES SOUTH SOUTHEAST OF

AUSTIN TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 160...WW 161...



DISCUSSION...LOOSELY-ORGANIZED CLUSTER OF SUSTAINED

STORMS/SUPERCELLS IN THE DFW AREA...AND SW-NE SQLN WITH EMBEDDED

SUPERCELLS FARTHER S /EXTENDING FROM ABOUT 35 NNE WACO TO ABOUT 50

NE JUNCTION TX/...EXPECTED TO MOVE MAINLY ESE THROUGH EARLY THU

GIVEN AREA INSTABILITY PATTERN/WIND PROFILES. SOME TENDENCY ALSO MAY

EXIST FOR UPSTREAM/WWD DEVELOPMENT ALONG THE SW END OF THE SQLN INTO

THE SRN PART OF THE HILL COUNTRY. WHILE CIN WILL CONTINUE TO

INCREASE WITH NOCTURNAL COOLING...UPR IMPULSE MOVING SEWD FROM W

CNTRL TX WILL PROVIDE SOME DEGREE OF LARGE-SCALE FORCING FOR

ASCENT...AND 40 KT SSWLY LLJ WILL MAINTAIN RICH LOW-LVL MOISTURE

INFLOW AND THE POTENTIAL FOR DOWNDRAFTS ENHANCED BY PRECIP-LOADING.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 28025.





...CORFIDI

