The one thing the plains tribes feared above all else,

according to a lot of trappers, traders and explorers through this region, was wildfire. In their case it was because of four- to six-foot-tall grass; we don't have the grass, but with winds and dry conditions like these, we don't need them.
Wild grass fires are ravaging large portions of Mid West City including the
Wind Song, Turtlewood, and Oakwood neighborhoods. Evacuations of these areas are being ordered. In addition a large grass fire has shut down I-35 both North and South bound in Lincoln Country near the Stillwater Exit. In Sparks and Wellston evacuations are being ordered.

I will correct one thing: Lincoln County is a ways east of I-35 and south of Stillwater, I'm guessing they mean Payne and/or Logan county. Midwest City is on the east side of Oklahoma City, and is one of the areas largely flattened by the 05/03/99 tornado.

Right now, the humidity is 19-20%, with westerly winds at 26-30mph, gusting up to near 40. With those conditions, you don't need the tall dry grass. This is a first-class mess, with people being evacuated and highways closed due to either blowing smoke or the fire jumping them.