At 2127 and 2157 UTC on 8 May (exactly six hours after it was previously noted), a surge in TPW in a cloudy region (Northeast TX region).  This might be a predictable behavior in All-Sky LAP and points to improvement needed in how it handles new model cycles.  Similar jump behavior was noted in All-Sky LAP CAPE.

2127 UTC                                                                                                                     2157 UTC

JohnF.