Sunday night, while many Americans were glued to the Academy Awards, residents of Arkansas were feeling the effects of a 4.7-magnitude earthquake that struck northeast of Greenbrier.
According to the U.S. Geological Survey, more than 700 earthquakes have hit the region in the past six months. Scientists aren't entirely sure why, but leading theories include the impact of natural gas drilling and a naturally occurring "swarm" or cluster of earthquakes that take place within a short span of time.
Despite the ongoing pattern of small tremors, Sunday's shaker was the biggest recorded in Arkansas since 1969. Several smaller aftershocks followed, and the event was felt throughout the state, as well as in Oklahoma, Tennessee, Missouri and Mississippi.
If you felt the Arkansas earthquake, tell us about it in the comments -- and be sure to fill out the U.S. Geological Survey's Did You Feel It? form, which helps experts at the USGS gather accurate earthquake data.
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Arkansas Earthquake Strongest Since 1969
Feb 28, 2011 – 12:53 PM
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