OT: Earthquake in Eastern U.S., Colorado...

Submitted by Seth on

It's not your building. It's mild but if you're shaking, please do the safe things.

Clarence Beeks

August 23rd, 2011 at 2:38 PM ^

Well, it's a bit complex, because the north american plate as we know it today extends to to the middle of the Atlantic ocean, but the margin of the plate (before complete accretion occurred) was along the east coast.  It's an area that isn't particularly active anymore, although there is some seismic risk there still.  This was from a zone of higher seismic activity that extends, more or less, down the axis of the Applachians, but the stronger portions of that are in GA, NC and TN.

profitgoblue

August 23rd, 2011 at 2:41 PM ^

There are several earthquakes in North Carolina every year.  Most of them cannot be felt, but they occur.  I read that the reason this one could be felt so far is because the crust along the East Coast is very brittle and not as broken by faults as on the West Coast.  Thus, when it moves the whole thing moves.  We felt it very clearly here in Charlotte.

 

Clarence Beeks

August 23rd, 2011 at 2:54 PM ^

Yeah, that and the type of rock makes a big difference, too.  That zone that causes the western NC earthquakes is what I was referring to.  Also, to be clear (since my lack of clarity caused the confusion to begin with), my comment about not being particularly active was about the east coast itself, as distinguished between the Applachian region.

BluePants

August 23rd, 2011 at 4:01 PM ^

Here in Winston-Salem we felt it very clearly as well.  We were sitting in a 1L orientation session and a professor was droning on about some sort of academic program when the room started clearly shaking.  All of the students were too afraid of the consequences for interrupting a professor's presentation, so we stayed put for the shaking, despite the projector shaking and the picture clearly reflecting this fact.

Hopped on the iPad to check it out (easier to conceal) and USGS said it was a 4 or 5 here, depending on the area of W-S.  My mind immediately shot back to GeoSci (Natural Hazards) with Larry Ruff.

Notably, all of the professors abandoned ship.

Six Zero

August 23rd, 2011 at 2:01 PM ^

At the office we're all trying to figure out what just happened over here...  Definitely felt it in Pennsylvania.

Certainly didn't expect to hear about it on MGo.

a non emu

August 23rd, 2011 at 3:14 PM ^

I work in Norwood, and only felt a mild shake. But my wife up in Waltham really felt it. She ran out along with most of the building. I've had the (mis?)fortune of feeling quite a few earthquakes in my not so long life. This was probably the mildest one of the lot. The biggest one I felt was the 2004 Indian Ocean tsunami quake (wiki). I was living in Chennai, India at the time and remember being jolted out of bed early in the morning. It's mostly concrete buildings there not really meant to withstand earthquakes. So it was some pretty serious shaking. Of course most of the damage happened a couple of hours later when the tsunami rolled into the city.

Moleskyn

August 23rd, 2011 at 2:01 PM ^

Do you have a link? I'm in Cleveland, OH and everyone in my department just got all excited because our cubes started shaking. It wasn't anything huge and it didn't last too long, but it provided something interesting for an otherwise pretty boring afternoon.

Wave83

August 23rd, 2011 at 2:45 PM ^

I am also in Cleveland and felt it.  I learned on twitter that @UMHoops is only a few blocks away from me and he also felt it.

Weird to feel a quake and turn to twitter to find out that they are evacuating buildings in DC because of the same quake.  Reminded me of the blackout when I had to call someone near NYC  I was working with to tell them that our power was out, only to find that it was out there also.

74polSKA

August 23rd, 2011 at 2:36 PM ^

We all felt it in Central Ohio.  It was weird, just like I was having a dizzy spell or something.  Just saw on the news that the one we are feeling came from a 5.5 magnitude in Ontario Canada.  I guess there's another one in Virginia.  Glad it wasn't too strong.

Edit:  Sorry, one of the Columbus stations was reporting that it was in Canada but now they are all reporting Virginia.

Wettin 3's

August 23rd, 2011 at 2:05 PM ^

Yeah felt it in North Carolina, my whole desk started shaking, thought someone ran into my house with their car or something. Wouldn't be the first time it occurred in my neighborhood...