A 4WARN Weather Alert is in effect for Wednesday as portions of Middle Tennessee has been placed in a “marginal” risk zone for thunderstorms by the Storm Prediction Center. The storm system was in the plains on Tuesday evening but will be moving into Middle Tennessee on Wednesday.

There is also a big thunderstorm complex that is moving out of the Ohio Valley that has caused a severe thunderstorm watch to be issued across portions of Kentucky, including Muhlenberg and Butler counties, until 10 p.m. Tuesday. “The warmth and the dew points in the 60s remain conducive for thunderstorms, but the wind shear is not there,” said 4WARN Weather Chief Meteorologist Lisa Spencer.

“(Tuesday night) the greatest threat of severe storms is in the plains.” The severe threat increases on Wednesday as the severe storms from the plains move into Middle Tennessee. “Wednesday afternoon is the most likely time to see strong to severe storms,” said Spencer. “The great threat is from damaging wind and hail. Isolated tornadoes are possible. The rain does linger into Thursday morning.” The western portion of Middle Tennessee has been placed in a slight risk zone, which is the second lowest zone. The remainder of Middle Tennessee has a marginal risk, which is the lowest storm chance.