Magnitude 4.2 quake shakes Arkansas THE ASSOCIATED PRESS
CARAWAY, Ark. -- A small earthquake centered in northeastern Arkansas rattled parts of several states Thursday but caused no major damage.
Shaking was felt as far away as Memphis, Tenn., and in Mississippi casinos.
A preliminary report from the U.S. Geological Survey said the quake, which hit at 8:05 a.m. four miles east of Caraway, had a magnitude of 4.2. A quake of magnitude 4 can cause moderate damage.
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The quake was centered in the New Madrid seismic zone, which covers portions of Arkansas, Missouri, Illinois, Kentucky and Tennessee. One of the largest earthquakes ever to strike in North America, estimated at magnitude, 7.5 was centered at New Madrid, Mo., during a series of temblors in the winter of 1811-1812.
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http://seattlepi.nwsource.com/national/apus_story.asp?category=1110&slug=Arkansas%20Earthquake