Topic: Northern Oklahoma preliminary 5.6 magnitude earthquake.

[BigOkie]

http://earthquaketrack.com/quakes/2016-09-03-12-02-44-utc-5-6-6

It woke me up.  Bunty, I'm sure you felt it unless you're a really deep sleeper.

[tbrasel]

I was already awake & definitely felt it. My 17 year old son, who was sound asleep woke up. Earthquakes will just make you  in a heart beat ! 

[BigOkie]

I was already awake & definitely felt it. My 17 year old son, who was sound asleep woke up. Earthquakes will just make you  in a heart beat !

I've found that pier/beam homes with a crawlspace react differently than slab foundation homes.  It wasn't violent, just felt like the floor was rolling for almost a minute.  The 2011 quake felt similar to this one.

[tbrasel]

I've found that pier/beam homes with a crawlspace react differently than slab foundation homes.  It wasn't violent, just felt like the floor was rolling for almost a minute.  The 2011 quake felt similar to this one.

The quake only seemed to last about 5-7 seconds here, however during that time, my cup of coffee began white capping enough to quickly go "Oh S*&t". Then it stopped as quick as it started.

Just curious through, in what direction have you trended toward the separation between pier/beam homes with a crawlspace versus slab foundation, as far as feeling it? I think I know, but wondering...

[BigOkie]

I've found that pier/beam homes with a crawlspace react differently than slab foundation homes.  It wasn't violent, just felt like the floor was rolling for almost a minute.  The 2011 quake felt similar to this one.

The quake only seemed to last about 5-7 seconds here, however during that time, my cup of coffee began white capping enough to quickly go "Oh S*&t". Then it stopped as quick as it started.

Just curious through, in what direction have you trended toward the separation between pier/beam homes with a crawlspace versus slab foundation, as far as feeling it? I think I know, but wondering...

For me, I think it has everything to do with not having so much of the floor contacting the ground, so ground movement will be along just the part of the frame contacting the piers, so the rolling effect since there is negative space under the dwelling floor, as opposed to slab foundations BEING the floor.

[tbrasel]

That is kinda what I was thinking as well.

My first house had a crawl space, but when I built my new house back in 2004, I decided to go with a slab, so I could anchor my frame to the slab, via steel rods for additional support. Everything has pros/cons to it I guess.

[Bunty]

http://earthquaketrack.com/quakes/2016-09-03-12-02-44-utc-5-6-6

It woke me up.  Bunty, I'm sure you felt it unless you're a really deep sleeper.

Yes, I most certainly did.  I recently awoken and was laying in bed when it suddenly hit.  The shaking and noise was like a freight train passing right next to my house.   From being twice as close to the epicenter than the 2011, 5.6 one, it was surely the strongest, longest and most frightening earthquake I've ever been through.  It lasted at least 20-30 seconds. I was saying to myself, please stop, don't get worse.     I don't think my house was damaged, but here is an article with photo that apparently shows a house in Stillwater damaged.  The Oklahoma Corporation has asked for wells to be shut down in a 500 square mile area.

http://www.reddirtreport.com/red-dirt-news/saturdays-56-earthquake-ties-state-record-2011-quake
http://newsok.com/article/5516721?utm_source=NewsOK.com&utm_medium=Social&utm_campaign=ShareBar-Twitter

[chief-david]

any major damage? I heard about grain elevators on twitter-but not putting belief in it

[BigOkie]

any major damage? I heard about grain elevators on twitter-but not putting belief in it

One injury was reported by our local CBS news station.  Some damage in Pawnee.

[Bunty]

While it was frightening to go through, picture frames and vases didn't fall to the floor at my house from the Pawnee quake, so gotta keep hoping the earthquakes don't get more intense. The earthquakes centered underneath and very close to Stillwater have for the most part subsided this year. Hopefully, things will continue that way. My guess is the next big earthquake, meaning greater than 5.0, will take place to the WSW of Perry. That area has been one of the hottest spots for earthquakes in Oklahoma for quite some time. Fortunately, that area is well out in the middle of nowhere, but close enough to Stillwater for a 5.0+ quake to be well felt.

Here is a video showing how a security cam picked up the quake at Cushing High School, around 30 miles from the epicenter.

[youtube]https://www.youtube.com/watch?v=YMO14yoGcuI[/youtube]