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Old 08-23-2011, 08:48 PM
 
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Quote:
Originally Posted by kjbrill View Post
We in Ohio seldom feel earthquates of any magnitude. But the fault line which runs parallel to the Mississippi River remains a constant danger. It has not experienced a significant earthquake in several hundred years, but the geological evidence is there it could be a big one. Cities like Memphis, St Louis, and up through Louisville and to Cincinnati could be in for a big surprise.

It is unusual but NOt particularly rare. The town of Anna, OH, was rocked by a dozen earthquakes in the 30s with three in excess of 5.0. In 1937, the Anna school building was destroyed. What was unusual was the school board's decision to purchase earthquake insurance after 1935 (for $90) which was unheard of at the time.

earthquakes (http://www.anna.k12.oh.us/About/History/html/earthquakes.htm - broken link)

Ohio No Stranger To Earthquakes | Ohio News Network

March 1937 Anna, Ohio Earthquakes
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Old 08-23-2011, 10:08 PM
 
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Originally Posted by kjbrill View Post
A magnitude 6 quake is not a trivial matter. I understand some of the aftershocks were felt up into New England. If in fact people felt it in Ohio with the Appalachians in between it must have been deep in origin.
It's definitely no trivial matter with our construction in the Eastern U.S. that just doesn't really take into account any earthquake threat. The New Madrid quake of 1811 - 200 years ago this past spring - under the Mississippi region did crack some buildings in Cincinnati and it even rang church bells as far as Boston.

Our older construction - particularly downtown, in OTR and elsewhere - probably wouldn't fare too well in any 6.5-magnitude or higher quake. But should a New Madrid quake happen again, Cincinnati is far enough away that it would hopefully be spared the worst. Cities such as Memphis and St. Louis are right on top of it.

Large New Madrid quake would likely produce moderate damage locally
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Old 08-23-2011, 10:32 PM
 
Location: Cambridge, MA
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Didn't notice a thing here!
At about that time in the afternoon I was on the phone with a customer in NYC, who asked me, "Did you feel the earthquake?" I thought she'd meant that I must've been shocked that she had all the info at the ready which we normally have to wring out of people. So I just laughed and went on with the call. Little did I know until I went online earlier tonight. None of the neighbors I saw afterwards and last evening had anything to say about it either.
After living in Japan, where there's at least a tremor pretty much every day, I'm surprised I didn't notice this one. Then again, those years may have made me "immune." Unlike a lot of people in my area - I suspect - I do know exactly where to go in my basement to shut off the intake valves for gas and water.
The thought of a major quake striking where I live now is a pretty scary one. My end of the block is entirely made up of wood-frame "three-decker" houses from before WWI. They're literally inches apart from each other. Once a fire got going the entire row would be burning in minutes. So I'd rather not think about it.
There's no telling what the pattern of a seismic shock will be. It may have been the case today that the vibrations traveled pretty far to the west.
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Old 08-25-2011, 01:00 PM
 
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This is the second earthquake I haven't felt.

The first was the Asheville earthquake a few years ago. I was outside in the woods when it happened and didn't notice it. I came back to my dorm and all the buildings were evacuated and people were just standing around in their pajamas looking confused.

This one actually struck pretty close to my hometown, so I knew about it instantly from Facebook, Twitter, and my phone all blowing up. Then I hear that my partner, on vacation in Massachusetts, felt it and so did a lot of the people around Cincinnati. I think I might have heard a glass rattle in the cupboard and just ignored it, but I'm probably imagining that.

I do find it fascinating that a deep origin earthquake happened in Virginia. I just wish that, for once, I was in on the excitement while it happened (as long as the excitement isn't at the cost of human lives). :-p
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Old 08-25-2011, 06:41 PM
 
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Originally Posted by Arctic_6 View Post
This is the second earthquake I haven't felt.

The first was the Asheville earthquake a few years ago. I was outside in the woods when it happened and didn't notice it. I came back to my dorm and all the buildings were evacuated and people were just standing around in their pajamas looking confused.
Consider yourself fortunate. I had several clients in SoCal and NoCal where you would feel 2-3 small tremors a day. One engineer would print out all of the earthquakes in the area each day.
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Old 08-27-2011, 10:17 AM
 
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Slept right through it up here in Centerville/Washington Twp. Wife was at home and said she felt the shudder.
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Old 08-27-2011, 11:37 AM
 
Location: Philaburbia
31,165 posts, read 57,302,589 times
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Quote:
Originally Posted by Arctic_6 View Post
This is the second earthquake I haven't felt.
You sound like my mom. She lives a half-mile away from the Lake Erie shore, and she didn't even feel the one that was centered out in Lake Erie in ... whenever that was. Awhile ago. She didn't feel this one, either.

To me the earthquake felt like I was surfing on Jell-o. Whee!
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Old 08-27-2011, 12:38 PM
 
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I didn't feel this one, but during the one from the New Madrid Fault that impacted Lexington 20 years ago or so: my husband was on the roof of the house and I was in the kitchen cooking. I thought he dropped something REALLY heavy up there, and he thought I exploded the pressure cooker. Funny how it never even occurs to you what's happening.
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Old 08-28-2011, 09:05 PM
 
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Originally Posted by Sarah Perry View Post
I didn't feel this one, but during the one from the New Madrid Fault that impacted Lexington 20 years ago or so: my husband was on the roof of the house and I was in the kitchen cooking. I thought he dropped something REALLY heavy up there, and he thought I exploded the pressure cooker. Funny how it never even occurs to you what's happening.
Very true. My initial reaction was that it was a dump truck or some other vibration caused by some construction outside - not that it was a tremor. It wasn't until I got a text from a friend in Philly saying they just had a quake that I realized I must have felt the same thing.

Then Twitter, for course, started going nuts and that confirmed it.
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