Could bow in a few hours
Posted by JAC on 6/13/2009, 9:32 pm


URGENT - IMMEDIATE BROADCAST REQUESTED
  SEVERE THUNDERSTORM WATCH NUMBER 402
  NWS STORM PREDICTION CENTER NORMAN OK
  820 PM CDT SAT JUN 13 2009
 
  THE NWS STORM PREDICTION CENTER HAS ISSUED A
  SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
 
          WESTERN AND CENTRAL OKLAHOMA
          NORTH TEXAS
 
  EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 820 PM
  UNTIL 400 AM CDT.
 
  HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
  MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
 
  THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 100
  STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF
  ALVA OKLAHOMA TO 60 MILES SOUTH SOUTHWEST OF SHERMAN TEXAS.  FOR
  A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
  OUTLINE UPDATE (WOUS64 KWNS WOU2).


DISCUSSION...COMPLEX...LOOSELY-ORGANIZED MCS NOW EVOLVING OVER NW TX
  AND THE SE PART OF THE TX PANHANDLE EXPECTED TO MOVE/DEVELOP
  GENERALLY E OR ENE INTO N TX AND CNTRL OK LATER TONIGHT.  DIURNAL
  CIN INCREASE WILL FURTHER COMPLICATE AND POSSIBLY HINDER EWD STORM
  PROPAGATION.  BUT COMBINATION OF SUSTAINED...VERY MOIST ESELY LOW
  LVL FLOW /ESPECIALLY N OF STALLED FRONT OVER SRN OK/...MODERATE WLY
  MID LVL FLOW...AND VERY DEEP EML SUGGEST GOOD CHANCE FOR DMGG WET
  MICROBURSTS...SVR HAIL...AND POSSIBLY A BRIEF TORNADO OR TWO AS
  UPSCALE DEVELOPMENT CONTINUES.
 
  AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
  TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
  KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
  MOTION VECTOR 26025.



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North TX / OK Severe Weather this afternoon - JAC, 6/13/2009, 9:00 am
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