

707 

WWUS20 KWNS 090215

SEL6

SPC WW 090215

OKZ000-TXZ000-090900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 266

NWS STORM PREDICTION CENTER NORMAN OK

905 PM CDT SUN JUN 8 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  THE OKLAHOMA PANHANDLE

  THE TEXAS PANHANDLE AND TEXAS SOUTH PLAINS



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 905 PM

  UNTIL 400 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  A TORNADO OR TWO POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF

GUYMON OKLAHOMA TO 50 MILES SOUTH OF LUBBOCK TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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 263...WW 264...WW 265...



DISCUSSION...NW TX/OK PANHANDLE SQLN SHOULD CONTINUE SEWD THROUGH

LATE TNGT...WITH DEVELOPMENT FOSTERED BY INCREASING ASCENT AND WNWLY

LOW TO MID-LVL FLOW ON SRN FRINGE OF POTENT CNTRL RCKYS SHORTWAVE

TROUGH. THE SQLN WILL CAPABLE OF SVR WIND AND HAIL.

WHILE WIND PROFILES SE OF THE SQLN ARE REASONABLY FAVORABLE FOR

LOW-LVL MESOCYCLONES/TORNADOES...MODEST LOW-LVL BUOYANCY AND

PREDOMINANT LINEAR MODE OF CONVECTION SUGGESTS A RELATIVELY LOW

POTENTIAL FOR LONG-LIVED TORNADOES ALONG MOST OF THE LINE.

HOWEVER...A BRIEF TORNADO OR TWO COULD OCCUR IN CONJUNCTION WITH

ALONG-LINE MESOVORTICES. A LOCALLY ENHANCED...CONDITIONAL RISK FOR A

TORNADO OR TWO ALSO COULD EVOLVE NEAR THE SW END OF THE SQLN...WHERE

TAIL-END STORMS WILL HAVE GREATER ACCESS TO LOW-LVL INSTABILITY AND

LESS LIKELIHOOD FOR DESTRUCTIVE INTERFERENCE.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 31030.





...CORFIDI

