https://www.foxweather.com/learn/earthquake-mississippi-river-new-madrid-history
As a kid growing up in SE Indiana we felt a tremor from a New Madrid shake in the early 70s...at first we thought it was Crane Naval Weapons Support Center because they used to blow up outdated battleship gunpowder and other munitions which we got a rumble from once in a while.
Story goes that when New Madrid had a big shake in the 1800s that the Mississippi ran backwards in at least one place after the quake...at least that’s the story I heard.
Biggest was a 5.1 ‘bout 7+ hours ago.
Quakes are shallow by 3-6 km depth.
Reason? A series of oil field waste disposal wells injecting most likely into salt domes and caps.
Also, the 8.2 New Madrid quake in 1811 caused church bells in Boston, 1,200 miles away, to sway back and forth and chime.
Good story, which I heard in Geology class in the 1960s.
Verifiable? I have no idea.
https://www.foxweather.com/learn/earthquake-mississippi-river-new-madrid-history
Biggest quake in American history. It cause church bells in Boston to ring.
The big quake was felt by President Madison at the White House, and made church bells ring in Boston. That is one hell of a quake
You are correct. If the same magnitude quake hits the New Madrid today that hit in 1811/1812, a lot more than 11 million people will die. That quake will affect more than those states as bells rung as far away as Boston, and the tremors were felt all the way to the eastern seaboard.
“Story goes that when New Madrid had a big shake in the 1800s that the Mississippi ran backwards in at least one place after the quake...at least that’s the story I heard.” That is correct.