NUCAPS Soundings and a Tale of Two Air Masses...Part II

Ok, so now for some observations of gridded parameters in this same region.  I decided to take a look at mid-level lapse rates and see if the gridded data showed differences across these two areas on the eastern flank of the broad low and the western flank of the upper ridge.

Image 1.  NUCAPS gridded 700-500 MB lapse rates over the SE CONUS, ~18 UTC 22 June 2017.

First, let me note that the gridded data came into AWIPS here at HWT about 30 mins or so before the NUCAPS sounding data.  Notice that lapse rates were generally higher in eastern portions of the area over Georgia than they were over Mississippi.  Values were near 6 C/km over some areas.  All else being equal, this would suggest stronger convection shouuld be expected over Georgia than Mississippi...and indeed, this is what has occurred.

This next image shows mixing ratios over this scene at this same time...

Notice here too, that values of mixing ratio (g/kg) were also generally higher over Georgia than Mississippi, again suggesting better chances for convection over Georgia.