Tropical Storm Erin formed in the Atlantic Monday morning, Aug. 11. Erin could become a hurricane by Aug. 13. Because the flooding has been a growing concern, city officials have installed emergency flood barriers along several miles of riverbanks. Flash flooding has emerged around the St. Louis region after heavy rain Tuesday afternoon.

The National Hurricane Center says Tropical Storm Erin is making its way west across the Atlantic Ocean – but with the storm still thousands of miles from the U.S. coast, FOX 13 meteorologists say it's still too soon to pinpoint its eventual path.