Slow-moving summer storms capable of extreme rain are poised to drench the East Coast Monday, threatening millions from North Carolina to New England with even more dangerous flash flooding. Rainfall totals could reach 2 to 4 inches in Monday afternoon and evening’s storms,

Transit agencies in the New York City area were promising a fairly smooth commute with some lingering delays on Tuesday, the morning after heavy rain pummeled the region, flooding parts of the subway system, inundating major roads and causing long flight delays.

Parts of Lancaster and York experienced significant flood damage after storms hit the region. See photos and videos of the aftermath.

The National Water Center warned several rivers would face serious flooding by Friday afternoon, including the Colorado River near San Saba, Texas; the Guadalupe River near Comfort, Texas; the Guadalupe River near Kerrville, Texas; and the Guadalupe River near Hunt, Texas.

Catastrophic floods can be difficult to prepare for. Sometimes evacuation is the right call, but if it’s too late the best bet is to find higher ground nearby. The stakes can be high, because a flash flood may give those in its path only minutes or seconds to react.

DURHAM, N.C. (WTVD) -- A flooding video taken in downtown Durham after severe storms move through the area has gone viral. Cyril and Dakota Jolly have lived in the Northwood Street Community for a decade, and shared the video to social media.

Residents south of the San Saba River in west-central Texas have been ordered to evacuate because of surging waters.

New flood warnings have been issued along the Guadalupe River in Texas less than two weeks after flooding killed more than 100 people.