Philly rocked by 4.1 magnitude earthquake in Delaware

Our city hasn’t experienced anything like this since 2011.

Philadelphia Skyline
Jason Murphy on Flickr
mark

Yes, the Earth did shake in Philadelphia Thursday afternoon.

According to the United States Geological Survey, a 4.1 magnitude earthquake struck about eight miles off the coast of Dover at 4:47 p.m, prompting people throughout the city to wonder what the hell just happened. (Ed. Note: Our original story had listed the quake as a 4.4, but it was subsequently downgraded to a 4.1.)

Thursday’s quake was felt as far north as NYC and as far south as the D.C. area.

A quake of this magnitude earthquake is considered minor and usually causes minimal damage, if any. Though we don’t hear often about earthquakes in the Northeast, they do occur pretty frequently. There have been 76 in the Northeastern U.S. and Southeastern Canada since June 1, though most of them were under a magnitude of 2, so were basically unnoticeable by humans.

The last time Philadelphia felt anything similar to this was 2011, when a 5.9 earthquake hit Virginia, causing broken windows and other minor destruction.

The Geological Survey’s crowd-sourced tracking of the quake shows residents of Washington DC, New York and Baltimore felt the earthquake, too.

And did you hear about the earthquake over the internet before you actually felt the earthquake? There’s a reason for that. Tweets move faster than seismic waves.

Thanks for reading another Billy Penn story

Seems you’re the kind of person who really digs in. Want more? Sign up for our morning update, the quick, easy, free way to stay on top of Philly news.

Thanks for reading Billy Penn

Like the story above, everything we publish is powered by our members. If you enjoy reading, throw us a bone! Just $5/month makes more difference than you’d think.

Thanks for reading! We need you.

Member donations power our newsroom. If Billy Penn helps you feel more connected to Philly, we’d love to count you in. Will you join us?

Lock in your support

Reader support powers our newsroom. A monthly membership helps lock it in.

Can we count on you as a Billy Penn sustainer?

Winning the local journalism game

Thank you: Your support as a member is powering our news gathering.

Know someone else who might like our work? Invite them to join.

Tagged

Weather