Strange booming noises (Again)

Remember the weird booming noises back in 08/30/2015: (That went on for like 2 hours)




Guess what they have came back! (Please turn up your volume on this one)





Yep.... The booming noises has returned to my neighborhood last night, but this time they were very quiet.

Its sounds like thunder but it wasn't because there weren't any clouds in the sky at all it was completely clear last night.

They also went on for 2 hours too like last time then stopped.