Preconvective Environment in Wichita

Below you can see VIS imagery of the Wichita CWA (in yellow).  The dry line is clearly seen to the west.

If you look at GOES-East derived CAPE (below), it's missing data over most of KS.  This is to be expected due to the clouds over the central and eastern portion of the state.  But why is the seemingly clear sky western portion of the state missing data?

Looking at the Cirrus band, you see thin high clouds blocking the western portion of the state retrievals.

This missing area is filled in with the AllSkyLAP layer CAPE.

It matches up fairly well with the SPC Mesoscale Analysis MLCAPEs.  The AllSkyLap layer CAPE is only a little underdone.

-Kevin