Severe storms are expected to slam the tri-state Saturday afternoon, bringing the risk of isolated tornadoes, damaging hail and flash floods to a swath of the region after a muggy start to the day.

New York City was hit by a pair of tornadoes 18 years ago, one of which was the first to strike Brooklyn in more than a century. As New Yorker's were waking up Aug. 8, 2007, severe thunderstorms ...