Looked at the LAP CAPE output again today at 1800 UTC 11 June 2015 southeast of Den ver, CO.   It did not seem to capture the magnitude of the CAPE.  In the first image below the sampled 460 J/kg grid seems to represent where the satellite added information to the GFS background and agreed nicely with the GFS 6h first guess.  The overall gradient and orientation seems pretty good as well.

The problem is that the CAPE seems very low when compared to the RAP analysis.

Given the strong supercell development, tend to believe the RAP vs the LAP analysis.  The second image below shows the same sampled location in the LAP. That is overlaid with the RAP which is showing 1600 J/kg at 1800 UTC.

MrSnow/Shasta