February 7 is the anniversary of the New Madrid earthquakes that struck the central U.S. in the winter of 1811-12. That's probably why someone chose February as the time to remember and be aware.
Nearly 2,000 small tremors occur each year, according to CUSEC. That's the Central United States Earthquake Consortium, made up of the states on that map above. Clockwise from the top left are Missouri, Illinois, Indiana, Kentucky, Tennessee, Alabama, Mississippi, and Arkansas).
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