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OKZ000-TXZ000-160600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 161

NWS STORM PREDICTION CENTER NORMAN OK

600 PM CDT WED MAY 15 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  SOUTH CENTRAL OKLAHOMA

  CENTRAL AND NORTH CENTRAL TEXAS



* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 600 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  NUMEROUS LARGE HAIL EVENTS EXPECTED WITH SEVERAL VERY LARGE HAIL

    EVENTS TO 3 INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 10 MILES NORTHEAST OF ARDMORE

OKLAHOMA TO 60 MILES SOUTH SOUTHEAST OF BROWNWOOD TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU1).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 160...



DISCUSSION...TSTMS EXPECTED TO INCREASE IN STRENGTH ALONG SSW-NNE

CONFLUENCE AXIS ATTM EXTENDING FROM NEAR WICHITA FALLS TX TO W OF

BROWNWOOD TX. ACTIVITY WILL BE FOSTERED BOTH BY CONTINUED SFC

HEATING AND BY ASCENT ASSOCIATED WITH UPR IMPULSE NOW MOVING ESE

ACROSS W TX. AREA VWP DATA SHOW AMPLE DEEP SHEAR/VEERING WIND

PROFILES FOR SUPERCELLS. IN ADDITION..MOIST...15-20 KT S TO SSELY

SFC FLOW AHEAD OF CONFLUENCE AXIS WILL MAINTAIN RISK FOR LOW-LVL

MESOS WITH ANY SUSTAINED UPDRAFTS. THE STORMS MAY EVOLVE INTO A

BROKEN SQLN WITH EMBEDDED LEWPS CONTINUING TO POSE A RISK FOR SVR

HAIL/WIND AND ISOLD TORNADOES THROUGH LATE TNGT.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 27020.





...CORFIDI

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