The flooding necessitated rescues, grounded planes, and submerged vehicles in waist-high water less than two weeks after flash floods in Texas killed more than 100 people, triggering concerns about the increasing number of flood fatalities in recent years because of heavier rainfall,

Forecasters warned more rain and flash flood risk is expected on July 15 after storms flooded out roads the day before.

A Level 3 out of 4 risk for flash flooding has been issued, encompassing major I-95 corridor cities such as Baltimore, Washington D.C. and Philadelphia.