Don't you close your shutters at home when there are strong winds?


Sorry, kidding. I also had two pretty turbulent flights over the polar route last month, but haven't heard such an announcement.

But many people woke up and opened the sunshades when the plane was shaking (me too, just for looking what was going up outside...) - while it was daylight outside and night in the cabin. So maybe they just wanted to avoid that too many people were bothered because of the daylight?