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Tornado Watch 5
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WW0005 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.
   SEL5
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 5
   NWS STORM PREDICTION CENTER NORMAN OK
   500 AM CST TUE JAN 29 2013
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          WESTERN AND CENTRAL OKLAHOMA
          FAR NORTHWEST TEXAS
   
   EFFECTIVE THIS TUESDAY MORNING FROM 500 AM UNTIL NOON CST.
   
   TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
   TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
   MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTHWEST OF FORT
   SILL OKLAHOMA TO 20 MILES NORTH NORTHWEST OF PONCA CITY OKLAHOMA.
    FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU5).
   
   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.
   
   DISCUSSION...TSTMS HAVE RECENTLY INTENSIFIED ALONG THE DRYLINE OVER
   WRN OK IN RESPONSE TO INCREASING HEIGHT FALLS ASSOCIATED WITH WRN
   U.S. TROUGH.  THESE STORMS ARE EXPECTED TO INCREASE IN COVERAGE AND
   INTENSITY THIS MORNING AS LARGE-SCALE FORCING FOR ASCENT FURTHER
   STRENGTHENS...AND AS LOW-LEVEL CONVERGENCE IS ENHANCED BY A
   MIGRATORY SURFACE LOW DEVELOPING NEWD ACROSS THE WATCH AREA. 
   MODEL-DERIVED FORECAST SOUNDINGS INDICATE THAT BOUNDARY LAYER
   DEWPOINTS IN THE LOWER 60S ARE CONTRIBUTING TO MLCAPE VALUES OF
   500-1000 J/KG WITH LITTLE OR NO CONVECTIVE INHIBITION.  WHEN COUPLED
   WITH 60 KT OF EFFECTIVE BULK SHEAR AND EFFECTIVE SRH VALUES OF
   300-350 M2/S2...THE ENVIRONMENT WILL SUPPORT SUPERCELLS AND BOWING
   LINE SEGMENTS CAPABLE OF DAMAGING WINDS AND A FEW TORNADOES.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
   GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
   MEAN STORM MOTION VECTOR 23045.
   
   
   ...MEAD
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Page last modified: January 29, 2013
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