MESOSCALE DISCUSSION 0597
   NWS STORM PREDICTION CENTER NORMAN OK
   0359 PM CDT TUE APR 26 2011
   
   AREAS AFFECTED...NORTH-CENTRAL/NORTHEAST TX AND FAR SOUTHEAST OK TO
   CENTRAL/SOUTHERN AR AND NORTHERN LA
   
   CONCERNING...TORNADO WATCH 215...
   
   VALID 262059Z - 262230Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 215 CONTINUES.
   
   PARTICULARLY DANGEROUS /PDS/ TORNADO WATCH 215 CONTINUES UNTIL 03Z
   FOR PORTIONS OF NORTH-CENTRAL/NORTHEAST TX AND FAR SOUTHEAST OK TO
   CENTRAL/SOUTHERN AR AND NORTHERN LA. LARGE HAIL AND TORNADOES WILL
   REMAIN A CONCERN...WITH THE TORNADO THREAT /INCLUDING THE
   POSSIBILITY OF STRONG TORNADOES/ EXPECTED TO STEADILY INCREASE
   TOWARD/AFTER DARK.
   
   SCATTERED STRONG/SEVERE TSTMS INCLUDING SUPERCELLS CONTINUE TO
   DEVELOP FROM THE SOUTH SIDE OF THE DFW METRO NORTHEAST INTO SOUTHERN
   AR. THE RELATIVELY VOLATILE WARM/MOIST SECTOR MAY CONTINUE TO RETURN
   NORTHWARD A DEGREE ACROSS NORTH-CENTRAL TX/TOWARD THE RED RIVER IN
   RESPONSE TO UPSTREAM HEIGHT FALLS/LARGE SCALE FORCING...WITH THE
   ARRIVAL OF MORE APPRECIABLE DEEP ASCENT /CURRENTLY ACROSS NORTHWEST
   TX/ LIKELY TO CONTRIBUTE TO AN UPSWING IN VIGOROUS DEEP CONVECTION
   BY THIS EVENING. WITH RIGHT MOVING SUPERCELL MOTIONS LARGELY
   PARALLEL TO THE SOUTHWEST-NORTHEAST ORIENTED FRONTAL BOUNDARY...THE
   MOST CONCENTRATED SEVERE/TORNADO THREAT SHOULD REMAIN FROM NEAR THE
   DFW METRO INTO SOUTHERN AR...LARGELY PARALLEL TO/SOUTHEAST OF I-30.
   THE THREAT FOR STRONG TORNADOES IS EXPECTED TO STEADILY INCREASE
   INTO THIS EVENING...ACCENTUATED BY AN INCREASINGLY STRONG LOW LEVEL
   JET WITH A CONSEQUENTIAL INCREASE IN LOW LEVEL HODOGRAPH
   CURVATURE/LENGTH.
   
   ..GUYER.. 04/26/2011
   
   
   ATTN...WFO...LZK...SHV...TSA...HGX...FWD...OUN...
   
   LAT...LON   31929774 33479752 34439374 34609203 32829220 31749498
               30559716 31929774