Rare 4.8 magnitude quake rattles Northeast

An aftershock of a preliminary magnitude 4.0 has struck just southwest of Gladstone, New Jersey, according to the United States Geological Survey.

It happened at about 5:59 p.m. ET, USGS said.

The aftershock comes nearly 8 hours after the main shock of 4.8 magnitude this morning. There have been at least 10 aftershocks, though most were in the 1.8 to 2.2 magnitude range.

A 4.8 magnitude earthquake rattled buildings across parts of the US Northeast on Friday morning, according to the US Geological Survey, with tremors felt from Washington, DC to New York City and to Maine.

It was the third-largest earthquake recorded in the area in the last five decades and the strongest in New Jersey in more than 240 years, the USGS said. But with authorities reporting little or no damage, and minimal travel disruptions, people soon resumed their everyday lives.

Here's what to know:

Amtrak trains are back to operating at normal speeds after an earthquake in New Jersey on Friday, the company said.

It said it started inspecting its tracks shortly after 11 a.m. ET, and put speed restrictions in place throughout the region. Amtrak said it has now completed those inspections.

There have been at least six aftershocks in the hours following the New Jersey earthquake Friday morning, according to United States Geological Survey data. 

The initial earthquake was felt in northern New Jersey just before 10:30 a.m. ET, and the aftershocks were all recorded in the immediate area of the earthquake, USGS said.

According to USGS, the largest of the six aftershocks was 2.2 magnitude, recorded just after 1:30 p.m. ET.

Here's a timeline (all times are ET):

New York Gov. Kathy Hochul said in a social media post that "aftershocks of these size are normal and are not expected to cause further damage."

The governor said there have been no reports of injuries or damage.

When an earthquake rattled buildings across the Northeast Friday morning, stunned residents described initially thinking a passing tractor-trailer or freight train was passing them before they realized it was something more.

There were reports of the 4.8 magnitude quake being felt from Philadelphia to New York City, according to the US Geological Survey.

See how some people reacted:

Three neighboring homes in Newark, New Jersey, have been evacuated after residents reported structural damage following this morning’s earthquake, according to the local public safety director. 

Newark Public Safety Director Fritz Fragé told CNN no injuries have been reported after firefighters responded to reports of damage at the homes in an area more than 30 miles from the earthquake’s epicenter. 

He said 10 families were relocated from the buildings, including 25 adults and three children.

Fragé added that all Newark city buildings, including City Hall and recreation centers, are closed. He said the city is inspecting buildings for any potential damage and power outages. 

Also in New Jersey’s Essex County, in Montclair, officials believe the earthquake caused a water main break, according to an update from the Office of Emergency Management for the Township of Montclair. The OEM said the water bureau is working to repair the line. 

The Montclair OEM said authorities have conducted a damage assessment of the township and there are no signs of damage to the infrastructure and all schools and municipal properties report no damage.

The rare 4.8 earthquake that struck northern New Jersey Friday was the third-strongest to strike the state, according to CNN analysis of US Geological Survey data.

The Friday morning earthquake also marked the strongest since 1783, more than 240 years ago. Two 5.1 magnitude temblors are the only stronger quakes in the state — one in 1755 and another in 1783. Both happened before New Jersey became a state in December 1787, but happened in the geographic area that now comprises the state's boundaries.

The quake is the third-strongest to hit the Northeast in 50 years and the 10th-strongest of all time in the region, USGS data shows.

Earthquakes in New Jersey and the region are rare. There have only been 24 earthquakes of 2.5 magnitude or greater in New Jersey since 1700.

All aspects of the New York City transit system are operating safely following this morning’s earthquake, the Metropolitan Transport Authority, which runs the city's subway and other forms of public transit, said.

MTA Chair and CEO Janno Lieber said every part of the transit system operated safely during the earthquake, as well.

He said initial facility inspections have been completed, including inspections of the seven bridges the MTA operate.

According to the MTA website, MTA Bridges and Tunnels (B&T) serves more than 900,000 vehicles on an average day. In 2019, it carried more traffic than any bridge and tunnel authority in the nation — more than 329 million vehicles, the MTA says. 

Lieber said MTA frontline staff have been directed to report any abnormalities in the system, but he said nothing had been flagged so far. 

There is a low likelihood of aftershocks following Friday's 4.8 magnitude earthquake that rattled several Northeast cities, New York City Emergency Management Commissioner Zachary Iscol said. 

Iscol, however, urged New Yorkers to remain vigilant.

“If you are outside during an aftershock, please move to an open area, away from buildings, trees and power lines. If you are driving, pull over to a safe location," he said at a news conference Friday alongside New York City Mayor Eric Adams.

Iscol said there were no major impacts or safety events related to the earthquake, and added that New Yorkers can call 311 to report any damage. 

The quake, he said, triggered the activation of the city's emergency response teams and prompted officials to issue guidance to the public.