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Severe Thunderstorm Watch 509
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WW0509 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL9

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 509
   NWS STORM PREDICTION CENTER NORMAN OK
   135 PM MDT MON SEP 29 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     SOUTHEAST COLORADO
     EASTERN NEW MEXICO
     WESTERN OKLAHOMA PANHANDLE
     NORTHWEST TEXAS PANHANDLE

   * EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 135 PM UNTIL
     900 PM MDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
   STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES EAST OF
   RUIDOSO NEW MEXICO TO 30 MILES NORTH OF LA JUNTA COLORADO.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU9).

   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...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
   INTENSITY THIS AFTERNOON AS LARGE-SCALE FORCING FOR ASCENT
   STRENGTHENS AHEAD OF THE CNTRL/SRN ROCKIES SHORT-WAVE TROUGH. MODEST
   INSTABILITY COUPLED WITH 40-50 KT OF DEEP-LAYER SHEAR WILL BE
   SUFFICIENT FOR SUPERCELLS AND BOWING STRUCTURES CAPABLE OF MAINLY
   DAMAGING WINDS AND LARGE HAIL. THE RISK FOR A TORNADO OR TWO MAY
   MATERIALIZE NEAR OR SHORTLY AFTER SUNSET AS LOW-LEVEL SHEAR
   INCREASES WITH THE DEVELOPMENT OF A NOCTURNAL LLJ.

   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 450. MEAN STORM
   MOTION VECTOR 23030.


   ...MEAD
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Page last modified: September 30, 2014
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