Every night for the last few weeks i hear a very audible rumbling sound. At first i thought it was a loud truck driving by but then i realized I hear it all over the city, same exact pitch and duration, it never alters. Definitely not a truck. It comes every few minutes and lasts for about 20 seconds. it sounds like it is coming from the earth.

is anyone else hearing this? any ideas what it might be?

My friend believes it is part of the transition between dimensions, from 3rd to 4th and into 5th, that might be why most people do not hear it or are not paying any notice to it.

It is there and very real, every night, but what it is, i can't tell you. if you are in LA listen for it tonight, it is a low pitch, loud rumbling sound. let me know if you hear it, it will be there.