

051 

WWUS20 KWNS 051950

SEL0

SPC WW 051950

NMZ000-TXZ000-060300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 280

NWS STORM PREDICTION CENTER NORMAN OK

250 PM CDT WED JUN 5 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NOERTHEAST NEW MEXICO

  NORTHWEST TEXAS



* EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 250 PM

  UNTIL 1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL SIGNIFICANT DAMAGING WIND GUSTS TO 75 MPH LIKELY

  SEVERAL VERY LARGE HAIL EVENTS TO 2.5 INCHES IN DIAMETER

    POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 5 MILES WEST

NORTHWEST OF LAS VEGAS NEW MEXICO TO 40 MILES SOUTH SOUTHEAST OF

CHILDRESS 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 279...



DISCUSSION...STORMS HAVE INCREASED AS ANTICIPATED IN MOIST

POST-FRONTAL UPSLOPE FLOW ACROSS NERN NM THIS AFTERNOON. LOW LEVEL

ESELY FLOW TOPPED BY MODEST WLY FLOW ALOFT HAS ESTABLISHED

SUFFICIENT SHEAR FOR UPDRAFTS TO ACQUIRE SOME ROTATION WITH LARGE

HAIL POSSIBLE. MOST STORM SCALE GUIDANCE SUGGESTS EVENTUAL EVOLUTION

INTO A FORWARD PROPAGATING MCS AS UPDRAFTS CONGEAL IN THE PRESENCE

OF FAVORABLE LOW LEVEL INFLOW AND CONTINUING MODEST WLY FLOW ALOFT.

WIND DAMAGE POTENTIAL MAY INCREASE INTO THE EARLY EVENING AS THIS

COMPLEX OF STORMS IS SUSTAINED EAST ACROSS THE TX/NM BORDER WITH

MESOSCALE ASCENT INTO THE COMPLEX ENHANCED ALONG WEST-TO-EAST

FRONTAL/OUTFLOW SEGMENTS.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 28035.





...CARBIN

