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Earthquake (a Very Small One) Hits Clementon

The Nov. 23 Clementon earthquake won't exactly go down in the history books.

That wasn't the stampeding of Black Friday shoppers this morning—it was an earthquake.

Albeit, a very minor one. The U.S. Geological Survey (USGS) confirms a small earthquake of 2.1 magnitude rumbled through Clementon this morning. Don't feel bad if you didn't feel it: the earthquake was 3.2 miles below the earth's surface and happened at 12:13 a.m.

Today's earthquake was nothing like the rumbler that hit in August 2011. That earthquake's epicenter was in Richmond, VA, but felt along the East Coast. It came in nearly three times higher on the Richter Scale as Friday's, at a 5.9 magnitude. The August 2011 earthquake was strong enough to damage the Washington Monument in Washington, D.C., which still remains closed with structural problems.

And we don't even get to feel special about a Black Friday earthquake. The USGS had its eye on about 50 others, all on Black Friday morning and just in the United States.

Did you feel the earth move under your feet? 

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Lynn S. Bonner November 23, 2012 at 04:27 PM
Wow, we were up watching a movie and it felt like our heater blew up. Didn't think about an Earthquake!
Charles November 23, 2012 at 08:40 PM
The Richmond quake was NOT "almost 3X as strong" Please check the Richter Scale and get it right!
Frank Chrzanowski November 24, 2012 at 04:28 AM
The Richter scale measurement of earthquakes is an exponential scale, expressed as a logarithm. The difference between the Richmond VA 5.9 scale quake and this 2.1 scale quake is (5.9 - 2.1 = 3.8) 3.8 which means that the real difference was 10 raised to the 3.8, almost 10,000 times stronger. 10 raised to the 4th power = 10,000.
Sean McCullen (Editor) November 24, 2012 at 04:18 PM
Thanks, gents. We've adjusted the article to better report on the difference between the two earthquakes.
Debi November 24, 2012 at 06:14 PM
Do they know where exactly the epicenter was in Clementon?


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