From your link, I gather: Very high levels are not being emitted from #4, but if the water level drops through boiling off and if they can’t get more water on the rods, there could be very high consequences.
What did you get from it?
Just got back from Lowes. Now have 5 rolls of Duct Tape. About what I would need. Not hoarding. Also picked up a bucket of stuff called DP 1030 Water Based Duct Sealant. Thousands of Japanese have been told to shelter in place. Whether or not this Radiation causes problems for the west coast, we have at least 2 Nuclear Reactors right on the Pacific Coastline. So I just added that stuff to my normal preparedness stash. Just being prudent. No one can accurately predict where this event will end up. And anyone that claims this will NOT be a problem or that this WILL be a problem, really is just guessing at this point in time. But check out this recent article.
Fukushima nuke plant situation 'worsened considerably': think tank