Apparently yesterday's quake was 6.6 in magnitude with over 60 aftershocks, one of them being 7.1. The Great Kanto Quake was 7.9 and that one claimed 140,000 lives. The 1995 Kobe quake killed 6400 people.
Current casualty figures is around 200-300 with an estimate of 1000.
I'm gonna try to give Tiger Convoy a call... he shouldn't be near the effected area, but considering that the quake was felt all the way in Beijing I think it'd be worth making sure he's okay.