Ims bearing failure?

[Gelbster]

Maybe but by then it may be too late.
Meanwhile open up & inspect the filter and drop the pan. Use a magnet on any ferrous particles. Post photos. Tell us exactly what model you have.

[10/10ths]

...it's like the double click sound the WWII depth charges made, one second before they blew up your U-Boat.

Sort of a "click-click BOOM" type of deal.

It's like the last episode of the Sopranos...You never hear the shot that kills you.