The Japan Times is reporting a power outage yesterday at Fukushima. Usually such reports indicate some significant event occurred at the plant (which may or may not be represented accurately in the news report):
Power outage at Fukushima nuclear power plant causes machinery to shut down. Kyodo Jun 28, 2016 http://www.japantimes.co.jp/news/2016/06/28/business/corporate-business/power-outage-fukushima-nuclear-power-plant-causes-machinery-shut/#.V3Ka0qKYKXM
The operator of the crippled Fukushima No. 1 nuclear power plant said Tuesday a power outage halted some systems but that no problems were detected in the cooling of the three melted-down reactors.
However, I saw no visible effect on emissions yesterday or today. Here are some of today's screenshots. Emissions can be seen above unit 3 to the right and to the extreme left of the screenshot (left of unit 1 for those viewing the screenshots):