Quick look at 12z soundings across the south vs 00z GFS model data.

The stronger capping inversion at LZK, SHV, LCH, LIX, JAN, and BMX seems like a pretty strong signal/forecast error.

A stronger cap helps prevent too many storms from forming too early, allowing fuel to build. pic.twitter.com/eb3wTarijo

— Jack Sillin πŸ‡ΊπŸ‡¦ (@JackSillin) March 17, 2021