Thunderstorm development could occur at any time during the next hour within the red outlined area on the latest Tulsa radar image above. Thunderstorms will not form all along the dryline in this region, but on an isolated to scattered basis. Any thunderstorm that forms will quickly become severe with very large hail, damaging winds and tornadoes possible.
A persistent echo is present on radar in extreme southern Okfuskee County. That may be the first cumulus tower to break the cap and explode into a thunderstorm. Another more recent echo continues to show up in Murray County.
The atmosphere is extremely unstable across the region. Hailstones will likely exceed baseball size with any organized storm that forms. Due to the extreme instability and increasing wind shear with height that is also developing across the region, tornadoes will also be possible.
Once formed, storms are likely to initially move Northeast or East/Northeast, then turn more toward the East as they mature.
Please stay alert if you live in northeast, central or southcentral Oklahoma along and ahead of this boundary during the next few hours.