The above image of the Tulsa radar in velocity (wind speed & direction) mode was taken just a few moments ago. The yellow circle and specifically the red dot within the circle shows what meteorologists call a "Tornadic Vortex Signature" or TVS located 4 miles Northwest of Kellyville.
This is a very strong indication of a tornado on radar. This dangerous storm is moving East/Northeast at 40 mph.
Very large hail, in excess of golfball size, is also likely.
If you live anywhere within the pink polygon (Tornado Warning) associated with this storm, seek shelter immediately.