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WWUS20 KWNS 171959

SEL0

SPC WW 171959

NMZ000-TXZ000-180300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 480

NWS STORM PREDICTION CENTER NORMAN OK

300 PM CDT SAT SEP 17 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST NEW MEXICO

  PARTS OF WEST TEXAS



* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 300 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...ISOLATED SUPERCELL DEVELOPMENT WILL OCCUR OVER THE EAST

SLOPES OF THE SACRAMENTO MOUNTAINS IN SOUTHEAST NEW MEXICO...AND

POTENTIALLY OVER THE EAST SLOPES OF THE GUADALUPE MOUNTAINS.  OTHER

STORMS MAY ALSO FORM ALONG A DIFFUSE BOUNDARY NEAR MIDLAND.  THE

STORM ENVIRONMENT WILL FAVOR SUPERCELLS CAPABLE OF PRODUCING LARGE

HAIL AND DAMAGING WINDS...AND THERE IS SOME CHANCE THAT STORMS COULD

GROW INTO A CLUSTER AND PERSIST WELL INTO THE EVENING.  ALSO...AN

ISOLATED TORNADO CANNOT BE RULED OUT THIS AFTERNOON.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH

NORTHEAST OF ROSWELL NEW MEXICO TO 50 MILES SOUTH SOUTHEAST OF

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 479...



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 29025.





...THOMPSON

