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Severe Thunderstorm Watch 197
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WW0197 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.
   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 197
   NWS STORM PREDICTION CENTER NORMAN OK
   245 AM CDT MON APR 27 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          WEST-CENTRAL TEXAS
   
   EFFECTIVE THIS MONDAY MORNING FROM 245 AM UNTIL 1000 AM CDT.
   
   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 75
   STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHWEST OF
   ABILENE TEXAS TO 50 MILES WEST SOUTHWEST OF JUNCTION TEXAS.  FOR
   A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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...THIS SEVERE THUNDERSTORM WATCH REPLACES
   TORNADO WATCH NUMBER 196. WATCH NUMBER 196 WILL NOT BE IN EFFECT
   AFTER 245 AM CDT. 
   
   DISCUSSION...ELEVATED TSTMS CONTINUE TO INCREASE IN COVERAGE AND
   INTENSITY EARLY THIS MORNING FROM THE PERMIAN BASIN INTO EDWARDS
   PLATEAU REGION.  THIS ACTIVITY IS LIKELY BEING DRIVEN BY AN ENHANCED
   ZONE OF LOW-LEVEL ASCENT FOCUSED ALONG A RESIDUAL OUTFLOW BOUNDARY. 
   THE COMBINATION OF STEEP MIDLEVEL LAPSE RATES...MUCAPE OF 1500-2000
   J/KG AND 40-50 KT OF EFFECTIVE BULK SHEAR WILL CONTINUE TO SUPPORT
   EMBEDDED SUPERCELL STRUCTURES WITH THE MAIN THREAT BEING LARGE HAIL.
   
   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 500. MEAN STORM
   MOTION VECTOR 24020.
   
   
   ...MEAD/CORFIDI
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