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Originally posted by Lichter daraus
...I was thinking, what about a pole shift, I mean, i don't think anybody on the planet would even know what that would sound like or even if it makes a noise, so why not, right?
Originally posted by underduck
We need to start collecting recordings of these sounds and see if we can compare them to the rumblings being heard in the NW and other parts of the world. I was thinking that the rumblings out west were going to being some geological phenomenon but MN is right in the middle of a plate. I am down in Iowa and we are not used to activity like this.
If this is something geological happening deep within the Earth it would appear to be unlike anything I am familiar with.
Originally posted by JustMike
reply to post by pop_science
It's always best to assume the mundane and check the surroundings like you did. If you hear something that's clearly not a train, then it'll get interesting...
reply to post by Lichter daraus
Let us know if it happens again and if it does, try to capture the sounds on a video recorder. Make sure you state the time and date, and as you turn the camera mention the direction. Anything you get could be useful.
By the way, I read on an old thread about similar sounds, that venting of high-pressure steam from turbines at a power station can make this kind of noise. Are there any steam-turbine power stations within your area? Even maybe up to ten miles away?