MESOSCALE DISCUSSION 2094
   NWS STORM PREDICTION CENTER NORMAN OK
   0120 PM CDT WED OCT 17 2007
   
   AREAS AFFECTED...ERN OK
   
   CONCERNING...TORNADO WATCH 708...709...
   
   VALID 171820Z - 171945Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 708...709...CONTINUES.
   
   POTENTIAL FOR TORNADOES IS EXPECTED TO INCREASE WITHIN THE NEXT FEW
   HOURS ACROSS EASTERN OKLAHOMA/NORTHEAST TEXAS. AN ADDITIONAL WW WILL
   BE NEEDED TO INCLUDE PARTS OF NORTHEAST TEXAS/SOUTHEAST OKLAHOMA. 
   IT IS UNCERTAIN AT THE MOMENT WHETHER THIS WILL INCLUDE REPLACEMENT
   OF WW 708/709.
   
   MID-LEVEL TROUGH AXIS IS IN THE PROCESS OF TAKING ON AN INCREASINGLY
   NEGATIVE TILT AND PIVOTING NORTHEAST OF THE SOUTHERN HIGH
   PLAINS...TOWARD THE OZARK PLATEAU.  AS FORCING FOR UPWARD VERTICAL
   MOTION ASSOCIATED WITH THIS FEATURE SPREADS EAST OF THE INTERSTATE
   35 CORRIDOR OF OKLAHOMA/NORTH CENTRAL TEXAS LATE THIS
   AFTERNOON...REMAINING INHIBITION WILL WEAKEN.
   
   SQUALL LINE NOW FORMING ALONG THE INTERSTATE 35 CORRIDOR WILL LIKELY
   INTENSIFY NEXT FEW HOURS AS IT SHIFTS EASTWARD IN STRONGLY SHEARED
   ENVIRONMENT WITH MIXED LAYER CAPE ON THE ORDER OF 1000 J/KG. 
   ADDITIONALLY...MORE DISCRETE STORMS MAY BEGIN TO FORM IN ADVANCE OF
   THE LINE DURING THE 19-21Z TIME FRAME.  LARGE CLOCKWISE CURVED
   LOW-LEVEL HODOGRAPHS AND A BUOYANT BOUNDARY LAYER WITH HIGH
   RELATIVELY HUMIDITIES ACROSS EASTERN OKLAHOMA/NORTHEAST TEXAS WILL
   BE FAVORABLE FOR TORNADIC DEVELOPMENT IN STRONGEST STORMS.  ISOLATED
   STRONG TORNADOES ARE POSSIBLE.
   
   ..KERR.. 10/17/2007
   
   
   ATTN...WFO...SHV...TSA...FWD...OUN...
   
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