The past several weeks have featured one of the most anomalous warm patterns of recent memory over the Central and Southern Plains, with 90 to 100 degree temperatures an almost non-stop event. See this latest 12z NAM run's temperatures for today (this has been going on for weeks). There is a severe drought in progress and the heat has been relatively bottled up since the last heat release a few weeks back. That being said, there are some very strong indications on most global means and superens