The National Weather Service says hail and severe thunderstorms are possible late Thursday and early Friday in the northwestern third of the state.
Mississippi communities are still digging out from last Friday's violent tornadoes that caused millions of dollars in damage and injured 22 people.
The new storms are expected to generally focus on areas from Vicksburg into northwest Mississippi.
While the weather service says lingering, heavy rain isn't expected to be part of the system, any rainfall would create more problems for farmers and residents in the Yazoo River Basin, where backwater already is covering thousands of acres near overflowing streams.
From Vicksburg on the swollen Mississippi River over to Meridian on the Alabama line, thousands of people are repairing damage and cleaning away downed trees from last Friday's severe weather that pounded central Mississippi.
Officials estimate some 8,000 homes were damaged, most in the Jackson area.