Some downtown Charleston streets could flood again tonight.

The National Weather Service has issued a coastal flood advisory until 11 p.m. for the Charleston area.

High tide is around 9 p.m. in Charleston and will peak around 7 feet, which usually means flooding in low-lying areas, according to the weather service. Flooding is possible an hour before and two hours after high tide.

The weather service is also warning of a slight chance of severe thunderstorms Wednesday. Storms could bring high winds, hail and tornadoes. Even without severe weather, the chance of heavy rain for Wednesday is 50 percent.

Reach Dave Munday at 937-5553.