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Severe Thunderstorm Watch 590
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WW0590 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.
   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 590
   NWS STORM PREDICTION CENTER NORMAN OK
   435 PM CDT THU JUL 16 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          WESTERN AND CENTRAL OKLAHOMA
          EXTREME NORTHERN TEXAS
   
   EFFECTIVE THIS THURSDAY AFTERNOON FROM 435 PM UNTIL MIDNIGHT CDT.
   
   HAIL TO 2.5 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 85
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH
   NORTHEAST OF DURANT OKLAHOMA TO 40 MILES WEST OF CLINTON
   OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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...CONTINUE...WW 587...WW 588...WW 589...
   
   DISCUSSION...THUNDERSTORMS CONTINUE TO DEVELOP AND INTENSIFY ALONG
   SEVERAL REMNANT OUTFLOW BOUNDARIES OVER NRN AND SRN OKLAHOMA. 
   ENVIRONMENT IS VERY WARM ACROSS MUCH OF THE AREA WITH TEMPERATURES
   OF 95-100F WHICH IS CONTRIBUTING MLCAPE OF 1500-2500 J/KG.  NWLY
   FLOW ALOFT IS FORECAST TO STRENGTHEN THIS EVENING WHICH WILL ENHANCE
   DEEP LAYER SHEAR AND AID IN STORM ORGANIZATION AND CONTINUED
   POTENTIAL FOR SEVERE STORMS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 27025.
   
   
   ...WEISS
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