http://www.nu.nl/news/1095729/10/Gew...rbulentie.html
Quick translation: Heavy turbulence above St. Petersburg, Russia. 13 passenger + 2 crew injured in a KLM flight from Amsterdam to Japanese airport Kansai. Plane undamaged, could continue flight. According to KLM, the pilot had warned passengers about upcoming turbulence, but the crew was still out and about serving drinks. Whatever they were serving fell on top of the passengers. One of the crew was taken to a Osaka hospital with burn wounds, 8 others also transported to hospital.
On board 262 passengers + 14 crew.
<update>
News item was updated to say injuries were minor, mostly bruises. Only 3 crew went to hospital.
I suppose this turbulence was much worse than what was visible on WX radar? Of course, I was not there to see it, so its hard to say anything about it.