Showers and thunderstorms this afternoon and evening could lead to locally heavy rainfall and minor flooding, forecasters said.
Lightning and gusty winds are also possible, according to the National Weather Service in Morristown.
There is a 70 percent chance of thunderstorms this afternoon and tonight near Oak Ridge, with a high of 83, the NWS said.
There is a 60 percent chance of showers on Friday, with a high of 81.
The greatest chance of precipitation in the area today is late this afternoon through midnight, forecasters said.