I have no idea whether the new flashing lights are indicative of changing conditions at the plant. I do believe they are on the cranes and I've noted in the past that flashing lights often coincide with reported problems at the plant and/or emission events.
Lights in frame below are not ordinarily on. The light to the left is flashing.
See that the light to the left is off (flashing on and off)
Big light on top off now
What I'm concerned about is rising radiation levels at the site. I find it interesting that Japan's former ambassador to Switzerland, Mitsuhei Murata, has come out and said that suspected criticalities at Fukushima need to be examined and verified or dis-confirmed. (see here). Mr. Murata is very brave and has been outspoken throughout the disaster. I wonder why he is stressing the criticalities now?
The Japanese media and Fukushima Diary are reporting problems in the vicinity of unit 2, which Jiji reported has an area measuring 9.4 sieverts (no time frame for exposure provided). 9.4 sieverts will kill you very quickly. Fukushima Diary is reporting rising strontium levels in a well between reactor 2 and the sea.
9.4 Sieverts Detected outside Fukushima Reactor Containment Vessel. JiJi. 2015/10/29-23:00) http://jen.jiji.com/jc/eng?g=eco&k=2015102901047
Tokyo, Oct. 29 (Jiji Press)--Tokyo Electric Power Co. <9501> said Thursday that radiation levels of up to 9.4 sieverts per hour have been detected outside a reactor containment vessel at the meltdown accident-hit Fukushima No. 1 nuclear power plant. … Checks conducted on Sept. 4-25 found the extremely high radiation levels at a cell which accommodates a pipe connected to the containment vessel of the No. 2 reactor at the plant devastated by the March 2011 earthquake and tsunami, TEPCO said. The highest contamination was detected on the floor. …9501>
Sr-90 density increased over 2.5 times in groundwater beside Reactor 2 nov 2 2015
On 10/30/2015, Tepco announced the Strontium-90 density reached the highest level at one of the observation wells beside Reactor 2. The sample groundwater was collected at the observation well called “No.1″, which is situated between Reactor 2 and the sea.The previous highest reading was 2,800,000 Bq/m3 of 8/3/2015, but it increased to 7,100,000 Bq/m3 on 10/1/2015. The well is beside the pump to collect overflowing groundwater. There is a possibility that increased Sr-90 was gathered in this pump area to be detected.