[The Cajun]

Should be easily found on seismograph records, if it occurred, especially since the time is given in the article.

Was just thinking that, probably more sensitive devices recording somewhere than available on the geology market.

[steve86]

I’m sure that NSA has Artificial Intelligence algorithms analyzing every squiggle from every hot geographical area 24x7. You can make a really, really good seismo sensing device from a few dollars worth of MEMS sensors/accelerometers these days.