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Particularly Dangerous Situation (PDS) Tornado Watch 82
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WW0082 Initial Radar image
   SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 82
   NWS STORM PREDICTION CENTER NORMAN OK
   315 PM CDT WED MAR 28 2007
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          THE WESTERN OKLAHOMA PANHANDLE
          THE TEXAS PANHANDLE AND THE SOUTH PLAINS OF WEST TEXAS
   
   EFFECTIVE THIS WEDNESDAY AFTERNOON FROM 315 PM UNTIL MIDNIGHT CDT.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 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 80 STATUTE
   MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH OF GUYMON
   OKLAHOMA TO 50 MILES SOUTH SOUTHEAST OF LUBBOCK TEXAS.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU2).
   
   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 80...WW 81...
   
   DISCUSSION...THE LOW LEVELS CONTINUE TO MOISTEN AS BOUNDARY LAYER
   DEWPOINTS OF 60-64 F SPREAD NWD/NWWD ON STRENGTHENING LOW-LEVEL
   FLOW.  ALSO...SURFACE TEMPERATURES HAVE WARMED INTO THE 70S ACROSS
   MUCH OF THE AREA...RESULTING IN WEAKENING CONVECTIVE INHIBITION. 
   THE DRYLINE IS BECOMING BETTER DEFINED NEAR THE TX/NM BORDER...AND
   SHOULD PROVIDE A FOCUS FOR CONVECTIVE INITIATION IN THE NEXT COUPLE
   OF HOURS.  ALSO...A SUBTLE MID-UPPER SHORTWAVE TROUGH IS ROTATING
   NEWD TOWARD W/NW TX...AND AT LEAST ISOLATED STORM DEVELOPMENT IS
   POSSIBLE THIS AFTERNOON INVOF THE E CENTRAL AND SE TX PANHANDLE. 
   GIVEN THE INCREASING LOW-LEVEL MOISTURE AND STRENGTHENING WIND
   FIELDS IN AREA PROFILERS AND VWP/S...AS WELL AS SHORT TERM MODEL
   FORECASTS...THE ENVIRONMENT WILL BECOME INCREASINGLY FAVORABLE FOR
   SUPERCELLS THROUGH THE AFTERNOON/EVENING.  THE INITIAL ACTIVITY
   SHOULD BE DISCRETE SUPERCELLS WITH THE POTENTIAL FOR A FEW STRONG
   TORNADOES AND VERY LARGE HAIL.  BY EARLY TONIGHT...CONVECTION MAY
   GROW UPSCALE INTO ONE OR MORE LINE SEGMENTS WITH MORE OF A LARGE
   HAIL AND DAMAGING WIND THREAT.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 24035.
   
   
   ...THOMPSON
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Page last modified: March 28, 2007
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