The trumpets of the Apocalypse. It has been happening all over the world.
Google YouTube something like heavenly trumpets, or unexplained noises from sky, you wil find dozens and dozens of videos.
Here’s one sample:
https://www.youtube.com/watch?v=-dIG3sWhyuc
https://www.youtube.com/watch?v=wCt4KVUPpXA
https://www.youtube.com/watch?v=unZvX5HHMNc
https://www.youtube.com/watch?v=tt0lc8skIN4
https://www.youtube.com/watch?v=Zlj5tw7l5u8
https://www.youtube.com/watch?v=RBvEllGIoL4