http://blogs.aljazeera.net/live/asia/japan-crisis-live-blog
"TEPCO reported that they confirmed 8217 micro Sievert at the front gate of the Daiichi Fukushima Powerplant. This is 3 times of what a person normally exposed to in a year in one hour."
Check out Al Jazeera's Live Blogs:
March 12th: http://blogs.aljazeera.net/live/asia/live-blog-japan-earthquake
March 13th: http://blogs.aljazeera.net/live/asia/japans-twin-disasters-march-13-liveblog
March 14th: http://blogs.aljazeera.net/live/asia/disaster-japan-march-14
March 15th: http://blogs.aljazeera.net/live/asia/japan-crisis-live-blog