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Severe Thunderstorm Watch 603
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WW0603 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.
   SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 603
   NWS STORM PREDICTION CENTER NORMAN OK
   240 PM CDT SUN JUL 19 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTH CENTRAL AND CENTRAL TEXAS
   
   EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 240 PM UNTIL 900
   PM 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 80
   STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH
   NORTHEAST OF DALLAS TEXAS TO 40 MILES SOUTH OF HUNTSVILLE TEXAS. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU3).
   
   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...THUNDERSTORMS DEVELOPING VICINITY FTW/DAL METROPLEX IN
   AREA OF MDT INSTABILITY AND STEEP MID LEVEL LAPSE RATES.  STORMS
   EXPECTED TO INCREASE IN NUMBER/INTENSITY AS COLD POOL DEVELOPS. 
   THIS PROCESS SHOULD ACCELERATE THE STORMS SWD THRU THE WATCH WITH
   POSSIBLE INTERACTION WITH OUTFLOW BOUNDARY MOVING NWD FROM SERN TX
   GULF COAST.
   
   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 550. MEAN STORM
   MOTION VECTOR 33025.
   
   
   ...HALES
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