Grandsport Speedway (way down south of Houston) has an HPDE coming up on Feb 10th:
Grandsport Speedway, which is this coming Sunday . Keep an eye on this page for TDE events (which are awesome, btw), but they sell out really fast once registration opens for each one:
https://www.thedriversedge.net/02_tracks.htm (they open 2 months before the date).