MESOSCALE DISCUSSION 0629
   NWS STORM PREDICTION CENTER NORMAN OK
   1258 PM CDT WED APR 29 2009
   
   AREAS AFFECTED...SERN OK/NERN TX/W CENTRAL AND SWRN AR
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 209...
   
   VALID 291758Z - 292000Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 209
   CONTINUES.
   
   SEVERE THREAT CONTINUES ACROSS MOST OF WW 209.
   
   LATEST RADAR IMAGERY SHOWS A WELL-DEFINED BOW ECHO CONTINUING TO
   SHIFT EWD ACROSS SERN OK...WITH A TRAILING LINE OF STRONG CELLS
   EXTENDING WWD ALONG THE RED RIVER.  DOWNSTREAM AIRMASS ACROSS SERN
   OK AND ADJACENT SWRN AR REMAINS THERMODYNAMICALLY-ADEQUATE TO
   SUSTAIN THE ONGOING BOW...SO EXPECT THE THREAT FOR DAMAGING WINDS
   AND HAIL TO CONTINUE WITH THIS FEATURE.
   
   FARTHER W -- WITHIN THE TRAILING W-E BAND OF STORMS...THE SEVERE
   THREAT IS NOT AS HIGH IN GENERAL...WITH STORMS ALIGNED MORE PARALLEL
   TO THE STORM MOTION VECTOR.  HOWEVER...THIS IS RESULTING IN SOME
   TRAINING OF CELLS...AND THUS HEAVY RAINFALL WILL BE A SIGNIFICANT
   THREAT ALONG THE RED RIVER VALLEY REGION FROM ROUGHLY WICHITA FALLS
   TX TO DURANT OK OVER THE NEXT 1-2 HOURS.
   
   ..GOSS.. 04/29/2009
   
   
   ATTN...WFO...LZK...SHV...TSA...FWD...OUN...
   
   LAT...LON   32929665 33559692 34269637 35089536 35039334 32909340
               32929665