East Ridge and the surrounding area is under a flash flood watch until 6 p.m. Wednesday evening, according to the National Weather Service.
Authorities said that West Chickamauga Creek is above the 10-foot stage as of 6 a.m. and is expected to crest above 11 feet by Thursday. Minor flooding could occur.
The forecast for today calls for showers and possible thunderstorms before 1 p.m. Temperatures will begin falling to the mid-40s by Wednesday afternoon with a southwest wind of 10 to 20 mph. Wind gusts could exceed 30 mph.
On Wednesday night the rain could change to snow by the early morning hours of Thursday, weather service officials said. The chance of precipitation is 60 percent. Officials said little or no snow accumulation is expected.
There is a wind advisory in effect Wednesday until 1 p.m.