Tennessee Weather Forum

Geology => Geology => Topic started by: bugalou on April 24, 2019, 04:59:19 PM

Title: New Madrid Seismic Zone Activity
Post by: bugalou on April 24, 2019, 04:59:19 PM
New Madrid Seismic Zone Activity

(https://i.imgur.com/K46OC0J.png)



https://earthquake.usgs.gov/earthquakes/eventpage/nm60268341/executive

Anyone feel it? I was asleep.

Edit: two smaller quakes occurred earlier this week in a addition to the one mentioned above all around Dyersburg. Hopefully it's not the start of a swarm.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Bruce on April 24, 2019, 06:39:20 PM
https://earthquake.usgs.gov/earthquakes/eventpage/nm60268341/executive

Anyone feel it? I was asleep.

Edit: two smaller quakes occurred earlier this week in a addition to the one mentioned above all around Dyersburg. Hopefully it's not the start of a swarm.
i did...
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: cgauxknox on April 24, 2019, 07:29:23 PM
Given that we're talking about the New Madrid fault zone I'd gladly take a swarm of small ones over a big one.  Any time stuff shakes out there it makes me nervous even all the way over here in Knoxville!
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: schneitzeit on April 24, 2019, 08:16:11 PM
Apocalypse!!!!!!1!!

 ::panic::
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: mamMATTus on April 24, 2019, 08:20:51 PM
Could be a foreshock...I doubt it. These bigger one's happen from time to time enough to remind everyone that the NMSZ exists, but I wouldn't worry too much about it. There was a 3.5 I think within the last couple of years. My QuakeFeed app goes off several times a week with 1.0-2.0's in the New Madrid area.

There will never be a warning. You might be lucky enough to be in the right place at the right time to see odd animal behavior en masse, but that's assuming you put 2&2 together within a decent amount of time. Maybe you're out in a field and happen to witness some sand blow activity...that would definitely be a sign and you would want to get the **** outta there before the ground liquefied.

I'm rambling as I think back to pursuing and attaining that BS in Geology 4 years ago.

Just a friendly reminder that the NMSZ is overdue by 30-50 years for another sizable quake. If that happens you will want to stock up on everything very fast as the transportation issues it will cause will be extreme regionally and moderate at the national level.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: schneitzeit on April 24, 2019, 09:36:35 PM
Quote
Maybe you're out in a field and happen to witness some sand blow activity...that would definitely be a sign and you would want to get the **** outta there before the ground liquefied.   

Could you explain this phenomenon in greater detail?

Thanks!


ETA: Basically, what is "sand blow" activity?
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: NismoWx on April 25, 2019, 05:19:49 AM
Could you explain this phenomenon in greater detail?

Thanks!


ETA: Basically, what is "sand blow" activity?
It's like a geyser, but with sand instead of water. In 1811/1812, they were observed in the crop fields at random before and after the big ones. There was so much pressure underground that it had to come out.

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Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: NismoWx on April 25, 2019, 05:43:45 AM
https://youtu.be/GTpznF4vr1Q short video on sand blow formation.

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Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: JayCee on April 25, 2019, 10:10:25 AM


There will never be a warning.

Just a friendly reminder that the NMSZ is overdue by 30-50 years for another sizable quake.

I'm reminded of all the hype before the last eclipse about the next one coming up in 2024 crossing the path of the 2017 eclipse and placing an X right over the NMSZ.  I'm not the superstitious type, but it does make me sit up and take notice.  Two eclipses crossing paths within 7 years of each other isn't something that happens every century. 

(http://endoftheamericandream.com/wp-content/uploads/2017/03/Solar-Eclipse-In-2017-And-Another-7-Years-Later-In-2024-Will-Mark-A-Giant-X-Across-The-United-States-460x290.png)
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: NismoWx on April 25, 2019, 10:17:20 AM
I'm reminded of all the hype before the last eclipse about the next one coming up in 2024 crossing the path of the 2017 eclipse and placing an X right over the NMSZ.  I'm not the superstitious type, but it does make me sit up and take notice.  Two eclipses crossing paths within 7 years of each other isn't something that happens every century. 

(http://endoftheamericandream.com/wp-content/uploads/2017/03/Solar-Eclipse-In-2017-And-Another-7-Years-Later-In-2024-Will-Mark-A-Giant-X-Across-The-United-States-460x290.png)
I'm listening.

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Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Thundersnow on April 25, 2019, 10:44:32 AM
Some of you are old enough to remember this name...

Dr. Iben Browning.

;)

Dec 3, 1990... good times.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: bugalou on April 25, 2019, 11:08:40 AM
Some of you are old enough to remember this name...

Dr. Iben Browning.

;)

Dec 3, 1990... good times.

I like the guy, he got me out of school for a day in 3rd grade.

Looks like there was another small quake this morning nearby in MO.  https://earthquake.usgs.gov/earthquakes/eventpage/nm60268696/executive
Nothing really to worry about IMO, but this is the most activity I have noticed for the area in a 7 day period in a while
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: memphishogfan on April 27, 2019, 12:32:17 PM
Living in NEA If freaks me the freak out to think the next big one could hit at any moment. 

There is a little town east of Manila called Dell.  No more than a few blocks.  A fishing buddy was higher up at Entergy and was in a lot of disaster prep meetings.  He says they were told if another big one hits the area from Big Lake to just east of Dell would be gone.

There is a large cavern under that area that holds water and the earth above that cavern is mostly sand and isn
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: bugalou on April 27, 2019, 01:54:01 PM
Living in NEA If freaks me the freak out to think the next big one could hit at any moment. 

There is a little town east of Manila called Dell.  No more than a few blocks.  A fishing buddy was higher up at Entergy and was in a lot of disaster prep meetings.  He says they were told if another big one hits the area from Big Lake to just east of Dell would be gone.

There is a large cavern under that area that holds water and the earth above that cavern is mostly sand and isn
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: bugalou on May 22, 2019, 10:21:30 AM
NMSZ continues to be more busy than average.  Its something I will certainly be keeping an eye on.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: bugalou on May 28, 2019, 02:37:40 PM
Another 2.7 yesterday.  If you don't have earthquake insurance now may be a good time.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: cgauxknox on May 28, 2019, 03:51:26 PM
For those of you with earthquake insurance who do you use?  Our insurance company, who we really like and covers our home and cars, doesn't offer an option for earthquake coverage.  Yes, I'm in East TN and realize the odds of damage are small, but we're in an older brick home and it wouldn't take much of a rattle to really do expensive damage.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: mamMATTus on May 28, 2019, 04:50:38 PM
Gotta be honest, with the increased frequency of these quakes I
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Charles L. on May 28, 2019, 05:04:06 PM
Gotta be honest, with the increased frequency of these quakes I
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: bugalou on May 28, 2019, 06:35:02 PM
I am having that same feeling.

Not saying we are going to see anything quite like 1812, but a solid 5.5-6.5 or something like that wouldn
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: mamMATTus on June 01, 2019, 02:12:14 PM
2.6 in Manchester about 30 minutes ago. It should have been felt considering it was almost right at the surface. I
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Thundersnow on June 01, 2019, 09:18:14 PM
2.6 in Manchester about 30 minutes ago. It should have been felt considering it was almost right at the surface. I
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Thundersnow on June 02, 2019, 06:37:14 AM
The one near Manchester was close to Arnold Air Force Base, and the depth looks like something at the surface. I wonder if that was an artificial cause.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: NismoWx on June 04, 2019, 05:55:08 AM
The one near Manchester was close to Arnold Air Force Base, and the depth looks like something at the surface. I wonder if that was an artificial cause.
Arnold AFB is a propulsion lab. They haven't used large ordnance like that in several years.

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Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: JayCee on June 04, 2019, 07:39:21 AM
I've not really kept up with the activity surrounding the NMSZ.  Is the current swarm anything unusual in terms of intensity/frequency? 
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Thundersnow on June 04, 2019, 08:11:01 AM
I've not really kept up with the activity surrounding the NMSZ.  Is the current swarm anything unusual in terms of intensity/frequency?

Nothing crazy on intensity yet, I don't think, but I think there is for sure an uptick in frequency.
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: cgauxknox on June 04, 2019, 08:20:58 AM
[attachimg=1]
Arnold AFB is a propulsion lab. They haven't used large ordnance like that in several years.

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[attachment deleted by admin]
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Bruce on June 04, 2019, 10:18:50 AM
There are tremors around our parts of country everyday nearly actually ... been going on since forever...  it
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Thundersnow on June 04, 2019, 01:42:51 PM
There are tremors around our parts of country everyday nearly actually ... been going on since forever...  it
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: bugalou on June 06, 2019, 03:43:36 PM
There are tremors around our parts of country everyday nearly actually ... been going on since forever...  it
Title: 3.7 Earthquake near Dyersburg this morning
Post by: Thundersnow on June 06, 2019, 10:15:42 PM
And now one in KY near Paducah...

https://fox17.com/news/local/24-earthquake-reported-in-kentucky

I
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Brandon on June 10, 2019, 05:32:53 PM
Another this morning near Loretto Tn. 2.2
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: cgauxknox on June 11, 2019, 07:53:31 PM
1.6 under Tellico Lake followed by a 2.2 in Sweetwater,  both this morning.   https://www.wate.com/news/local-news/22-magnitude-earthquake-recorded-outside-sweetwater/2068950474
Title: Re: 3.7 Earthquake near Dyersburg this morning
Post by: Thundersnow on June 12, 2019, 03:36:40 AM
There was also one in north Alabama.

Not sure if some of this is normal activity that we
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou on July 11, 2019, 02:06:52 PM
Generated this this other day.  This is activity since April 2019 for NMSZ.  92 total earthquakes.  Activity has certainly ticked up as of late.  Hopefully they stay weak like this!

(https://i.imgur.com/494F1qx.jpg)
Title: Re: New Madrid Seismic Zone Activity
Post by: mamMATTus on August 26, 2019, 10:10:13 AM
Several small quakes in the Reelfoot Lake/Ridgely area over the last 24 hours.
Title: New Madrid Seismic Zone Activity
Post by: Thundersnow on August 26, 2019, 12:54:53 PM
Several small quakes in the Reelfoot Lake/Ridgely area over the last 24 hours.

Interesting. I don
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou on September 03, 2019, 01:24:19 PM
Interesting. I don
Title: New Madrid Seismic Zone Activity
Post by: Thundersnow on September 03, 2019, 01:50:42 PM
I always thought Crowley
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou on September 03, 2019, 02:56:08 PM
I always thought Crowley
Title: Re: New Madrid Seismic Zone Activity
Post by: Thundersnow on September 03, 2019, 06:37:44 PM
I also remember that about the wildlife... apparently the flora and fauna on the ridge have more in common with the hills of TN than they do the nearby Ozarks.
Title: Re: New Madrid Seismic Zone Activity
Post by: Curt on September 03, 2019, 06:55:49 PM
I also remember that about the wildlife... apparently the flora and fauna on the ridge have more in common with the hills of TN than they do the nearby Ozarks.

It
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou on November 22, 2019, 09:33:16 PM
Below is an excellent paper on how an ancient sinking plate in the mantle may be part of the reason the NMSZ exists.  Worth a read if you are into this stuff.

https://www.researchgate.net/profile/Alessandro_Forte/publication/252126489_Descent_of_ancient_Farallon_slab_drives_localized_mantle_flow_below_the_New_Madrid_Seismic_Zone/links/53d562ff0cf220632f3d577a/Descent-of-ancient-Farallon-slab-drives-localized-mantle-flow-below-the-New-Madrid-Seismic-Zone.pdf
Title: Re: New Madrid Seismic Zone Activity
Post by: Thundersnow on December 02, 2019, 04:21:41 PM
FWIW- https://fox17.com/news/local/16-earthquakes-strike-tennessee-town-in-three-days
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou on December 03, 2019, 07:36:19 PM
FWIW- https://fox17.com/news/local/16-earthquakes-strike-tennessee-town-in-three-days

They have been small but these have been much more focused geographically speaking than what I normally see.  Something to watch for sure.

From last 7 days: 1.0+
(https://i.imgur.com/1oBBAwT.jpg)
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou 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.
Title: Re: New Madrid Seismic Zone Activity
Post by: Dyersburg Weather on February 04, 2020, 03:58:45 AM
We had a 2.7 last night. First one I
Title: Re: New Madrid Seismic Zone Activity
Post by: schneitzeit on February 05, 2020, 10:38:06 PM
We had a 2.7 last night. First one I
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou 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 (https://www.academia.edu/20228099/Very_Large_Earthquakes_Centered_Southwest_of_the_New_Madrid_Seismic_Zone_5_000_7_000_Years_Ago?email_work_card=view-paper)
Title: Re: New Madrid Seismic Zone Activity
Post by: Thundersnow 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 (https://www.academia.edu/20228099/Very_Large_Earthquakes_Centered_Southwest_of_the_New_Madrid_Seismic_Zone_5_000_7_000_Years_Ago?email_work_card=view-paper)

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.
Title: Re: New Madrid Seismic Zone Activity
Post by: TNHunter on August 30, 2020, 07:28:53 AM
Nice little 3.7 quake in Marked Tree, AR this morning.
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou 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.
Title: Re: New Madrid Seismic Zone Activity
Post by: bugalou 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.
Title: Re: New Madrid Seismic Zone Activity
Post by: TNHunter on December 13, 2020, 06:09:03 PM
Anyone else just feel that quake in Dyer County? 2.7
Title: Re: New Madrid Seismic Zone Activity
Post by: Curt 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.
Title: Re: New Madrid Seismic Zone Activity
Post by: TNHunter on December 13, 2020, 06:25:27 PM
We heard a loud pop in the northern Memphis metro.

Oh wow that
Title: Re: New Madrid Seismic Zone Activity
Post by: Curt on December 13, 2020, 06:45:13 PM
Oh wow that
Title: Re: New Madrid Seismic Zone Activity
Post by: Matthew 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?
Title: Re: New Madrid Seismic Zone Activity
Post by: Curt 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.