Reports started yesterday morning about random booms that gently shake everything for a second. Yesterday they happened for about 30 mins to an hour and at some point were every 30 seconds. They seemed to start back up over the last 10 minutes here Friday morning.

So far no indication as to what they are...a lot of guessing though.

http://www.koco.com/news/what-is-the...ahoma/30598094

http://kfor.com/2015/01/08/strange-b...d-in-oklahoma/

http://www.normantranscript.com/news...fd5255c75.html

“There are some stories going around that’s what it was, but based on the research we’ve done here, it doesn’t appear what people heard is related to the cryoseism phenomena,” said Matthew Day, National Weather Service Meteorologist. “There’s not enough moisture, and the temperatures are not cold enough. That happens in areas where you have a lot of water flowing through a lot of rock. We don’t know what it was, we just know what it is not.”