Around 11 million Americans are under flood alerts Saturday evening as a "ring of fire" weather pattern continues to impact the eastern two-thirds of the country through the weekend.A flash flood emergency was issued near the Washington,

Forecasters are tracking a potential mesoscale convective system that could unleash damaging winds, hail and possible tornadoes across parts of Iowa, Illinois, Indiana, Wisconsin, Michigan and surrounding areas over the next 24 hours.

The storms can produce damaging winds and cause flooding, as one to three inches of rain are expected in some areas.