I'm not sure what is going on at Fukushima. Yesterday there was a boat in Daiichi's harbor (as I posted on my blog) and today there are unusual emissions around units 3-4.
Here is a link to screenshots from the last couple of days: https://www.dropbox.com/s/xwl6cr7yx3j7v27/March%2018%20-%2020%20WEBCAM%20Boat%20in%20Harbor%20and%20Strange%20Emissions.pdf?dl=0
Today's screenshots start at the bottom of page 12.
Here is a comparison of the view from Unit 1 on 3/18/2016 at 23:08: