Fairly nice 500mb trough will cross through the southern plains tomorrow, 17th. Decent gulf moisture is making its way back north today and will continue to advect into tomorrow. Surface low, along ne-sw oriented cold-front, forming in the TX panhandle will move east then northeast through central OK on Thursday. This may help back sfc winds to an east-southeasterly direction ahead of quickly approaching cold front. 850mb winds are generally out of the sw today and much of tomorrow contributing to a warm layer that will prevent thunderstorm develop until later in the afternoon Thursday when the 500mb trough moves east. Depicted by the NAM/WRF, there is some low-level directional shear but mostly unidirectional from 850mb on up. Chase target tomorrow, if I choose to go out, will likely be in the Norman-Chandler-Shawnee area as a starting point.