The NUCAPS sounding data became available around 19Z.  We chose a point along the Nebraska/Kansas state line in a cloud free region.  Overall, the sounding appeared valid.  However, the surface dewpoint and temperatures were around ten degrees too low (in comparison to nearby METAR), producing too little CAPE.  After modifying the surface data, CAPE increased to around 2000 J/kg.  This was much higher than the 800-1200 J/kg values being observed from the GOES LAP data.  Considering the severity of resulting convection, the 2000 J/kg values were likely most representative of the environment.  The first image capture is the original, the second is the modified.

BRICK TAMLIN/ALEXANDERS DARK BAND…Brick, is that TRIDENT?