I was one who heard a strange sound in Jan of this year. It was different from anything I heard before. Below is what I posted back in Jan.
Last evening I was in my back office with the door open. A cool front moved through. At one point I did heard such a strange sound that I stopped to take notice. It was a ethereal type howling sound. It lasted for about 30 seconds. I never heard anything like it before.
Now, whatever it was, I attribute it to the a natural affect of the front moving through. These type of natural sound effects my be getting widespread notice because of youtube, causing people like myself to comment upon them, making it seem more unusual than it is
If this wasn't put on youtube, etc, then I would likely have forgotten about it in a week and made nothing of it.
Wow...I missed this whole discussion but just a few days ago I heard this here. Honestly shut everything down to ‘hear’ it. I would have to go check my notes for the exact date, but it was about 4am.
I live near an airport(major hub) and there is lots of rail here too. At first I had thought it was the storm warning siren.