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Severe Thunderstorm Watch 49
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WW0049 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Low 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 49
   NWS STORM PREDICTION CENTER NORMAN OK
   150 PM CST SAT MAR 9 2013
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHERN OKLAHOMA
          CENTRAL AND NORTH TEXAS
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 150 PM UNTIL
   1100 PM CST.
   
   HAIL TO 2 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 40 MILES SOUTH OF
   BROWNWOOD TEXAS TO 35 MILES NORTH NORTHEAST OF ARDMORE OKLAHOMA. 
   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...BAND OF TSTMS INVOF SFC COLD FRONT IS INCREASING
   GRADUALLY IN INTENSITY AND ORGANIZATION AS FRONTAL ZONE IMPINGES
   UPON PROGRESSIVELY MORE MOIST BOUNDARY LAYER...DESTABILIZED BY
   NARROW CORRIDOR OF PREFRONTAL SFC DIABATIC HEATING.  FAVORABLE DEEP
   SHEAR AND BUOYANCY ARE FCST FOR CONTINUED TSTM ORGANIZATION AND SVR
   POTENTIAL INTO AT LEAST EARLY EVENING. QUASI-LINEAR MODE SHOULD
   PREDOMINATE WITH BOW/LEWP FORMATIONS OFFERING THREAT OF DAMAGING
   GUSTS AND MRGL HAIL.  ANY SUSTAINED SUPERCELLS THAT CAN FORM WITHIN
   OR AHEAD OF LINE WILL POSE RISK OF LARGER HAIL AND A TORNADO...BUT
   THIS THREAT IS MORE CONDITIONAL.
   
   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 450. MEAN STORM
   MOTION VECTOR 23035.
   
   
   ...EDWARDS
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