The National Weather Service has issued a tornado watch for eastern Oklahoma through 7 p.m. Thursday.
The tornado watch covers nearly two dozen counties, including the Tulsa metro area.
NWS Tulsa forecasts supercell potential from roughly 3 p.m. to 8 p.m., with hazards including hail up to baseball size, wind gusts up to 65 mph and a few tornadoes.
Additional thunderstorms are possible for eastern Oklahoma overnight, with large hail, damaging winds, heavy rain and flooding possible. There will be a decreased but continued low tornado threat.