It was a warning. Last time I went through one, everything stopped, just as it did now...then all Heck hit.
Thankfully, it hit about 2 minutes away from where I lived and no one was hurt.
I’m now in that “calm before the storm” moment.
Stay safe
Sometimes your ears pop, like in an ascending or descending plane, or driving up a mountain. If you don’t have a basement, get in the middle of the house, away from exterior walls.