By Greg Hilburn, Joel Shannon, Jeanine Santucci
USA Today Network
An unusual earthquake early Thursday, March 5 in northwestern Louisiana awoke people from their sleep, shook furniture, rattled pipes and raised eyebrows due to its strength.
The U.S. Geological Survey previously reported that the magnitude 4.4 earthquake struck about 5:30 a.m. March 5 with its epicenter just north of Coushatta, about 50 miles from Shreveport. Later, the earthquake was upgraded to a magnitude 4.9.