One of the nuclear plants in japan affected by the quake had an explosion a few minutes ago. No details yet but appears worse than media reporting, the scale probably admitted to only because the explosion was caught on video pardon my skepticism. 20km radius evac zone I just heard. I'm not a scientist but it looked like something under pressure popped pretty badly, like a reactor vessel. the visible pressure wave prior to the explosion/cloud was decent. fingers crossed for all.