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428 

WWUS20 KWNS 191955

SEL7

SPC WW 191955

NMZ000-TXZ000-200200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 327

NWS STORM PREDICTION CENTER NORMAN OK

155 PM MDT WED JUN 19 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EAST CENTRAL AND SOUTHEAST NEW MEXICO

  WEST CENTRAL TEXAS



* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 155 PM

  UNTIL 800 PM MDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

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

TUCUMCARI NEW MEXICO TO 40 MILES SOUTH SOUTHEAST OF HOBBS NEW

MEXICO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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.



&&



DISCUSSION...THUNDERSTORMS ARE DEVELOPING JUST E OF THE MOUNTAINS IN

NM...WHILE AN OUTFLOW BOUNDARY MOVES WWD/SWWD FROM W TX INTO ERN NM.

THE OUTFLOW AIR MASS WILL CONTINUE TO MODIFY...AND SUPERCELLS WILL

BE POSSIBLE AS THE NM CONVECTION ENCOUNTERS THE MODIFYING OUTFLOW

WHERE VERTICAL SHEAR IS MAXIMIZED.  LARGE HAIL AND DAMAGING WINDS

WILL BE THE MAIN THREATS AS STORMS SPREAD EWD/SEWD ALONG THE

OUTFLOW...THOUGH AN ISOLATED TORNADO CANNOT BE RULED OUT WITH

STORM/BOUNDARY INTERACTIONS.



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 550. MEAN STORM

MOTION VECTOR 29015.





...THOMPSON

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