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Author Topic: New Madrid Seismic Zone Activity  (Read 19458 times)

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Offline bugalou

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Re: New Madrid Seismic Zone Activity
« Reply #45 on: December 17, 2019, 12:27:10 PM »
With the new year upon us, just a reminder to home owners on the west side of the state - add a Earthquake policy to your homeowners insurance!  All it would take is a 4.5 in the NMSZ to settle one side of your house and crack your slab and your house is worthless.  A 4.5+ is well over 90% likely in the next 50 years. Not sure about your insurers but for mine it was an additional $300 annually which is money well spent.  It won't take an apocalyptic quake to ruin your day.
« Last Edit: December 18, 2019, 10:48:14 AM by bugalou »

Offline Dyersburg Weather

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Re: New Madrid Seismic Zone Activity
« Reply #46 on: February 04, 2020, 03:58:45 AM »
We had a 2.7 last night. First one Iíve felt since I was a kid. Sounded like a truck hit the house.

Offline schneitzeit

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Re: New Madrid Seismic Zone Activity
« Reply #47 on: February 05, 2020, 10:38:06 PM »
We had a 2.7 last night. First one Iíve felt since I was a kid. Sounded like a truck hit the house.

I'll never forget the way that 4.0 felt in Knoxville back in December 2018.

I was pulling an all-nighter for a final exam, and all of the sudden, everything started shaking. Took me half a minute to realize that was a real earthquake. I hustled over to TNWX and posted within a minute of the occurrence. Turns out it verified, and the epicenter was something like 60 miles SSW of Knoxville. Strongest in East Tennessee since 1973!
Nashville's Big Hits (since '98)

April 16, 1998 Tornado
January 16, 2003 Snowstorm
Summer 2007 Drought
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Offline bugalou

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Re: New Madrid Seismic Zone Activity
« Reply #48 on: August 12, 2020, 11:07:50 AM »
For those of you who enjoy research papers, I found this one interesting and it just came out.

Very Large Earthquakes Centered Southwest of the New Madrid Seismic Zone 5,000-7,000 Years Ago

Offline Thundersnow

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Re: New Madrid Seismic Zone Activity
« Reply #49 on: August 12, 2020, 09:49:29 PM »
For those of you who enjoy research papers, I found this one interesting and it just came out.

Very Large Earthquakes Centered Southwest of the New Madrid Seismic Zone 5,000-7,000 Years Ago


Interesting stuff- thanks for sharing.

Realizing we have a historical footprint here that goes back only 400 years or so, you just never know what kind of geological clocks are ticking underneath us. These kinds of evidences bear this out.

Offline TNHunter

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Re: New Madrid Seismic Zone Activity
« Reply #50 on: August 30, 2020, 07:28:53 AM »
Nice little 3.7 quake in Marked Tree, AR this morning.

Offline bugalou

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Re: New Madrid Seismic Zone Activity
« Reply #51 on: September 01, 2020, 02:15:43 PM »
Nice little 3.7 quake in Marked Tree, AR this morning.
Pretty sure I heard it as it sounded like some distant booms and no storms were around during the time.  Didn't feel anything though.

Offline bugalou

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Re: New Madrid Seismic Zone Activity
« Reply #52 on: November 21, 2020, 03:27:27 PM »
I found this short video that does a good job showing how the New Madrid fault formed and how its different than other faults.
https://www.youtube.com/watch?v=VuolPMAJncU

If  you notice in the video those magma intrusions - they may be key to big earthquakes in the area as some think so of the larger quakes are caused by these outcroppings (which are massive - tens of cubic miles) toppling over and sinking back towards than mantle since these are substantially denser than the surrounding thin alluvial soil and broken up semi rifted craton plate.
« Last Edit: November 22, 2020, 12:01:24 PM by bugalou »

Offline TNHunter

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Re: New Madrid Seismic Zone Activity
« Reply #53 on: December 13, 2020, 06:09:03 PM »
Anyone else just feel that quake in Dyer County? 2.7

Offline Curt

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Re: New Madrid Seismic Zone Activity
« Reply #54 on: December 13, 2020, 06:12:30 PM »
Anyone else just feel that quake in Dyer County? 2.7
We heard a loud pop in the northern Memphis metro.

Offline TNHunter

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Re: New Madrid Seismic Zone Activity
« Reply #55 on: December 13, 2020, 06:25:27 PM »
We heard a loud pop in the northern Memphis metro.

Oh wow thatís a good distance

Offline Curt

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Re: New Madrid Seismic Zone Activity
« Reply #56 on: December 13, 2020, 06:45:13 PM »
Oh wow thatís a good distance
As the crow flies about 40 miles.

Offline Matthew

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Re: New Madrid Seismic Zone Activity
« Reply #57 on: December 13, 2020, 11:01:39 PM »
As the crow flies about 40 miles.
Is that a surprise distance being only a 2.7?  Meaning is smaller ones usually felt several miles away like a large one?

Offline Curt

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Re: New Madrid Seismic Zone Activity
« Reply #58 on: December 14, 2020, 03:22:40 PM »
Is that a surprise distance being only a 2.7?  Meaning is smaller ones usually felt several miles away like a large one?

I really don't know. I think unless your right under a 2.7, its pretty hard to feel. If you're moving around, you almost wont feel one that magnitude where I am. My wife did hear a pop which we have heard before from tremors when something in the house pivots some. Who knows, maybe it was something else altogether.

We had a 5.0 when I was a kid in the 1970's which was terrifying esp at that age. I can remember the entire floor moving. We actually had cracks in the driveway and house.

 

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