Gas / steam/ evaporated water came out from reactor 4 to cover the building around on 6/4/2012.
It was from 12:50.
↓ 2:25 ~
↓ Before
↓ After
The weather of Fukushima was cloudy. Temperature was 16.9 ~ 28.0 ℃. Humidity was 55 %.[Link]
The similar thing happened 8/14/2011 as well. It was 11:40.
↓2:00~
The weather was sunny. Temperature was 25.1 ~ 36.7 ℃. Humidity was 47%.[Link]
Iori Mochizuki