Urban Malfunction.

It was second largest power failure in Tokyo.
1.4 Million households were influenced.
Several trains and subways halted, and together with blackouts of traffic lights, caused disorder in commuting.

The cause was very simple and improbable mistake.

A crane ship was plying with its crane up.
It was a wide river with few bridges, and the crew had forgotten of the existence of a power line acrossing the river.
Unfortunately, it was a part of a power line which is near to the power plant, thus the power failure became large in scale and took 3 hours to restore completely.

It was lucky that many people went to the provinces to make family visits during Bon.
It could have been much worse.

Tokyo Stock Exchange was also influenced, that the system to compute Nikkei index was in a fuctional disorder.
Amazingly, in spite of the presence of the unrest, the market continued advance.

The incident clearly brought out the weakness of megapolis.

I'm afraid if Tokyo will be the next target of terrorists.