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Severe Thunderstorm Watch 39
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WW0039 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
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 39
   NWS STORM PREDICTION CENTER NORMAN OK
   1035 PM CST SUN FEB 24 2013
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHWEST AND WEST-CENTRAL TEXAS
   
   EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1035 PM UNTIL
   600 AM CST.
   
   HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
   STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH
   SOUTHEAST OF SAN ANGELO TEXAS TO 80 MILES NORTH NORTHWEST OF
   MINERAL WELLS TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
   THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
   
   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 HAVE RECENTLY DEVELOPED NEAR THE INTERSECTION OF
   A SWD-MOVING COLD FRONT AND AN EWD-MOVING PACIFIC FRONT OVER THE LOW
   ROLLING PLAINS WITH ADDITIONAL STORM DEVELOPMENT ANTICIPATED SWD
   ALONG THE PACIFIC FRONT INTO THE CONCHO VALLEY.  A STRONG...SLY LLJ
   WILL CONTINUE TO ADVECT AN INCREASINGLY MOIST BOUNDARY LAYER BENEATH
   VERY STEEP MIDLEVEL LAPSE RATES /REFERENCE 00Z MAF SOUNDING/...
   CONTRIBUTING TO MUCAPE VALUES APPROACHING 1000 J/KG WITHIN THE WARM
   SECTOR.  GIVEN THE STRONG FORCING FOR ASCENT AND VERTICAL SHEAR
   ATTENDANT TO THE DEEP-LAYER CYCLONE MOVING INTO THE SRN PLAINS...THE
   SETUP WILL PROMOTE SEVERE STORMS CAPABLE OF LARGE HAIL AND DAMAGING
   WIND GUSTS.
   
   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 400. MEAN STORM
   MOTION VECTOR 24035.
   
   
   ...MEAD
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Page last modified: February 25, 2013
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