A new Tornado Watch has just been issued for northeast and east-central Oklahoma, as well as a part of northwest Arkansas, including the Tulsa area. It is valid until Midnight.
Thunderstorms have begun to form along an outflow boundary from early morning thunderstorm activity over Osage County, OK. The image below is the latest radar from the Tulsa area site:
The red dashed line shows the current location of the remainder of the outflow boundary. Additional thunderstorm development could occur at any time over the next 2 hours along the boundary, including right over or very near Tulsa.
Very large hail, damaging winds and isolated tornadoes will be possible with any severe storm that forms in this region. Most of this activity will move Northeast to East/Northeast, but then turn more Eastward over time.
Further West, thunderstorms continue to form over western Oklahoma, in a broken line fashion so far. Below is the latest radar from the OKC area site:
Very large hail, damaging winds and tornadoes are possible with this activity as it moves Eastward this evening. A Tornado Watch continues for this region until 10pm CDT: