My systems didn't actually seem to be affected until what I think was probably a SECOND spike of outages at about the time you posted.

The retrospective will be very interesting reading!

(Obviously the category of outages caused by many restored systems "thundering" at once to get back up is known, so that'd be my guess, but the details are always good reading either way).

Yep. I don't think they ever fully recovered, but status page is still reporting a lot of issues.