United Nation’s World Meteorological Organization, updated June 2013: The World Meteorological Organization (WMO) [received] a request from the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) to assist them with the meteorological aspects of a dose assessment from the radiological releases from the Fukushima Daiichi nuclear power plant accident. [...] Light rain was observed from the 15th to the morning of the 17th due to a weak low pressure system which moved north eastward off the east coast of Japan. In particular, rain was observed in the Fukushima prefecture during the night from 1700 JST March 15 to 0400 JST March 16 [...] corresponding with significant emissions. [...] winds were from the west [blowing any Fukushima releases over the Pacific] until the morning of 15th, but changed to a direction from north northeast [in direction of Tokyo] during the daytime of the 15th, the time when the reactor number two container burst. [...] After 1500 JST, the winds turned to a direction from east southeast, and then changed to north [blowing releases south].
Wikipedia on Fukushima Unit 2 reactor: An explosion was heard after 06:14 JST on 15 March in Unit 2 […] The radiation level was reported to exceed the legal limit and the plant’s operator started to evacuate all non-essential workers from the plant. […] Soon after, radiation equivalent dose rates had risen to 8.2 mSv/h […] Three hours after the explosion, the rates had risen to 11.9 mSv/h […] Japanese nuclear authorities emphasized that the containment had not been breached as a result of the explosion and contained no obvious holes. In a news conference on 15 March the director general of the IAEA, Yukiya Amano, said that there was a “possibility of core damage” at Unit 2 of less than 5%. [...] 27 March, TEPCO reported measurements over 1000 mSv/h in the basement of the Unit 2 turbine building, which officials reported was 10 million times higher than what would be found [TEPCO] retracted its report and stated that the figures were not credible [...] following the ensuing wave of media retractions that discredited the report worldwide, TEPCO [said it actually was] “more than 1,000 millisieverts per hour”, as originally reported, but the concentration of radioactive substances was 100,000 times higher than usual, not 10 million.
See documentary featuring the ‘burst’ here: NHK: "The unimaginable was happening" -- Workers say part of Reactor 2 containment vessel destroyed -- After alarming pressure readings, "we heard a loud bang... pressure is now zero" (VIDEO)
Published: April 8th, 2014 at 1:00 am ET
- Japan ex-Prime Minister: Fukushima very close to ‘China syndrome’ — First time in history where melted fuel “burned through, leaking to outside of container” — Reactor melted down 4 hours after M9.0 quake (VIDEO) March 11, 2014
- Japanese Journalist: Workers “very worried” about deformed 400 ft. structure falling on Fukushima reactor buildings and causing another crisis — Immediate repairs needed yet “can’t do anything” due to extreme radiation levels — Staff told to “constantly watch it” — One of site’s most dangerous places June 3, 2014
- State of melted fuel at Fukushima plant unknown — Worker: “We opened the Pandora’s box” — Journalist: “We’re headed toward a real crisis” June 10, 2013
- IAEA ***NOT for distribution***: Molten core is suspected to have penetrated Fukushima containment vessel — Prime Minister on 3/11: We couldn’t be in Tokyo if melted fuel went through containment vessel (VIDEO) December 18, 2013
- Energy Journal: Fukushima “an ongoing crisis… an international issue, its important we all keep our eye on it… we owe it to the Pacific” — Nuclear fuel dropped into sub-basement and melted through some concrete, no one can get in to see where it is now (AUDIO) April 25, 2014