He said a state trooper was awakened by a tremor about 2:30 a.m. Friday. The trooper was sleeping in cabins near the sinkhole response command post in Bayou Corne along La. 70 South.

Horton said the most recent tremors are probably about a 2 on the Richter scale, which measures the energy of earthquakes.

What might be most vexing about the return of these sharp tremors is that they come in addition to long-period, lower frequency tremors that began Aug. 6. These long-period tremors come from northwest of the sinkhole and not in the salt dome, Horton said.

[link to theadvocate.com]