Flash flood danger is building across the East Coast, with millions of people in Georgia to New York at risk. A slow-moving cold front is dragging rounds of rain and thunderstorms into the region, threatening weekend plans.

The front, responsible for severe weather across the Midwest earlier this week, is pushing eastward. Heavy rain and strong winds are expected, with the National Weather Service issuing flash flood watches for several states.

Millions of people are advised to prepare for the worst, with emergency shelters and evacuation orders in place. The situation is being closely monitored by weather officials.