Storm Debby causes rainfall, flooding and tornadoes in Northeast

Mid-Atlantic and northeastern states were being inundated with rain and severe weather from the remnants of Debby on Friday, bringing dangerous flash flooding and the threat of tornadoes.

Flood warnings and watches stretched from the Carolinas up to New England, the National Weather Service warned in an update early Friday, with rainfall reaching 15 to 25 inches in places.

Major flooding hit Tioga County, Pennsylvania, and Steuben County, New York. Marc Rice and Shane Nickerson with the Tioga County Board of Commissioners said in a video update on Facebook that medical evacuations were underway.

At least 530 flights within, into or out of the United States were canceled Friday because of the weather, according to FlightAware. Nearly 4,000 flights were delayed.

LaGuardia Airport and John F. Kennedy International Airport in New York urged travelers to check with their airline for status updates.

Downed trees caused train delays Friday morning, Amtrak Northeast said in a post on X, telling riders that service between New York's Penn Station and Stamford, Connecticut, was delayed "due to rail congestion incurred from downed trees blocking the tracks in the area."

Service between Union Station in Washington, D.C., and Richmond Staples Mill Station in Virginia was also delayed.

Friday's New York Yankees game against the Texas Rangers was rescheduled to Saturday.

Along Debby's northeastern path, many areas will receive 3 to 7 inches of rain, enough to produce "considerable to locally catastrophic flooding impacts through tomorrow morning," the weather service said. At least seven people are known to have died as a result of Debby.

Debby has weakened since it first arrived in the United States and was downgraded to a tropical depression Thursday, after making its second landfall in South Carolina. It was downgraded again Friday to a post-tropical storm with winds of 30 mph. It is moving northeast at 35 mph.

Its main threat remains to be the sheer amount of rain it can produce. Coastal flood warnings and advisories remain in place for many locations adjacent to water along the Mid-Atlantic coast as persistent and strong winds push water inland to normally dry areas.

Authorities in Berkeley County, South Carolina, said early Friday that 2 to 3 feet of fast-moving water was rushing through streets of Moncks Corner, north of Charleston, prompting multiple rescues.

The waters were high enough for kayaking in Longs, South Carolina.

Vermont, which was hit by extensive flooding twice last month, braced for another major extreme weather event Friday.

Hershey Park in Pennsylvania announced it would shut Friday "given the inclement weather from Tropical Storm Debby."

The storm is also expected to cause significant flooding. More than 35 million people from South Carolina to Vermont are under flood watches.

A strong cold front stretching southwest from the Great Lakes through the Plains is pushing Debby to the Northeast and also bringing very low temperatures for August. The central Plains, the middle Mississippi Valley and northern Minnesota could see record lows Friday, with some areas 20-25 degrees below daily averages.