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M4.8 earthquake hits New Jersey

Socom7 said:
Epicenter near Tewkesbury, NJ (~30 miles from New York City).

Source
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Woah that is fairly substantial for that area. I can't imagine any of the older infrastructure there being built to any significant seismic standards. Probably not a good time to be driving across the Pulaski Skyway....
 
This is really not something to write home about. A 4.8 is quite weak, and short. Skyscrapers will tolerate wind sway and as a byproduct, earthquake sway. Small brick buildings may have crumbling away from materials already damaged.

It wouldn't even wake up some people, frankly. Keep in mind, there is a huge difference in a 4.8 and a 5.8. Even a 4.8 and a 5 have a pretty substantial difference in strength. It's actually about double. Anyone who wasn't directly at the epicenter probally just thought some heavy machinery was being operated near them.
 
intel-bank said:
This is really not something to write home about. A 4.8 is quite weak, and short. Skyscrapers will tolerate wind sway and as a byproduct, earthquake sway. Small brick buildings may have crumbling away from materials already damaged.

It wouldn't even wake up some people, frankly. Keep in mind, there is a huge difference in a 4.8 and a 5.8. Even a 4.8 and a 5 have a pretty substantial difference in strength. It's actually about double. Anyone who wasn't directly at the epicenter probally just thought some heavy machinery was being operated near them.
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I agree 4.8 is relatively minor. Not a big deal to a location built to consider seismic problems, like California. But in PA/NJ/NY, with infrastructure dating back to the 1800s (or older), it's a slightly different story.
 
teekay99 said:
I agree 4.8 is relatively minor. Not a big deal to a location built to consider seismic problems, like California. But in PA/NJ/NY, with infrastructure dating back to the 1800s (or older), it's a slightly different story.
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Even if not build for it, it is quite minor. The process of building a building is going to shake it around more thana 4.8 if even a short distance from the epicenter. Right at the epicenter it may knock some paintings off the wall. A bridge, well, trucks will cause more vibration.

They also don't last very long at this range, a few seconds max.

A 5.0+ is when damage will start and maybe then be a concern for these regions. A 5.0 is no big deal in places like California.

Like I said, we are talking about half the power of a 5.0 when damage is considered to begin on anything even poorly build buildings.
 
alphaecho said:
NJ earthquake 2024, caught by my indoor Ring cams. We're 15 miles from the epicenter.

https://twitter.com/x/status/1776270662492934168
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This is exactly what I'm talking about. It knocked over a few things, but the same types of things will occasionally fall down on a building under construction. It's also a short jolt. This isn't a big concern to bridges or even poorly built old buildings. Jacking up a poorly built old building is common and will cause about the same jolts.
 
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