Special 18z sounding at Fort Worth indicates a mega-cap. 18z sounding at Norman shows a little less of a cap, but a continued lack of moisture between 850 mb and 600 mb. Meanwhile, the dryline appears to have gone stationary along an Enid-Frederick-Big Spring line. In the warm sector, winds have begun to back and increase from southern OK into North Central Texas, but are veering from near I-40 northward. The moisture axis appears to run up I-35 to Ardmore, curving northeastward toward Tulsa.

Cumulus continues to bubble from OKC to Wichita Falls to Sweetwater, along the dryline. Just north of Wichita Falls appears to be the area of greatest interest at the moment.