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Tornado Watch 714
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WW0714 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL4
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 714
   NWS STORM PREDICTION CENTER NORMAN OK
   405 PM CDT WED AUG 19 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          EXTREME SOUTHERN KANSAS
          NORTHERN AND CENTRAL OKLAHOMA
   
   EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 405 PM UNTIL
   1100 PM CDT.
   
   TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST SOUTHWEST OF
   ALVA OKLAHOMA TO 60 MILES EAST SOUTHEAST OF PONCA CITY OKLAHOMA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU4).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND 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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 713...
   
   DISCUSSION...A RESIDUAL OUTFLOW BOUNDARY IS BEGINNING TO LIFT SLOWLY
   NWD ACROSS CENTRAL/NW OK AS THE LOW LEVELS MODIFY ON THE COOL SIDE
   OF THE BOUNDARY.  DESTABILIZATION IS REDUCING CONVECTIVE INHIBITION
   NEAR THE INTERSECTION OF THE OUTFLOW WITH A DIFFUSE TROUGH ACROSS
   KS...AND THUNDERSTORM DEVELOPMENT MAY OCCUR IN THE NEXT 1-2 HOURS IN
   THIS AREA FROM GAG-P28.  THE MESOSCALE ENVIRONMENT APPEARS FAVORABLE
   FOR SUPERCELLS IN TERMS OF INSTABILITY AND DEEP LAYER VERTICAL
   SHEAR...WHILE LOW-LEVEL SHEAR AND MOISTURE WILL BE SUFFICIENT FOR A
   FEW TORNADOES WITH STORMS NEAR THE OUTFLOW BOUNDARY.  VERY LARGE
   HAIL WILL ALSO BE POSSIBLE WITH ANY SUPERCELLS THAT FORM...AND THE
   SEVERE THREAT WILL SPREAD EWD/ESEWD INTO THE OVERNIGHT HOURS.
   
   AVIATION...TORNADOES AND 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 28025.
   
   
   ...THOMPSON
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Page last modified: August 20, 2009
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