8/4/2011 19:00~20:00,Fukushima live camera of Tepco caught enormous smoke / steam and strong light from unit 4.
Though Tepco’s “live” camera is suspected to stream recorded video over and over,the scale of the smoke and the light was unusual.
Dr.Takeda Kunihiko ,a former member of Nuclear Energy Council states they release radioactive gas during the night so satellite can’t observe it easily.
Temperature in Fukushima was 31C at that time. It’s hard to observe normal steam in this heat,and from the video,it doesn’t look like fog covering everywhere.
Recently, radiation level is extremely high around unit 1 for some reason.
Some people warn,it keeps going critical state continuously.