According to JR East, around 9:58 AM (JST) on January 23rd, a power outage occurred on the Tohoku, Hokuriku, and Joetsu Shinkansen lines.
Upon inspection by staff, it was confirmed that the overhead wires were hanging down on the up track between Ueno Station and Omiya Station.
As a result of this incident:
JR East has dispatched maintenance crews to the site of the wire trouble to assess the situation further.
However, due to the anticipated time required for both assessment and restoration work, the resumption of services is expected to take a considerable amount of time.
We will continue to provide updates on the situation as more information becomes available.
Regular seats used on Reserved cars and Unreserved cars of Shinkansen. Consider it as "economy class" seat.
Better seats with more space than ordinary seats. All Green Seats are reserved only. Consider it as "business class" seats.
Your seat is reserved and secured when you book your tickets. Head to the station with a peace of mind.
Seats are the same as Ordinary Seat.
Better seats and free blankets. Popular among Japanese business persons, executives and people who
Know as "First Class" of Shinkansen seats. Only available on Hokuriku and Tohoku Shinkansen lines.
You can take any open seats in unreserved cars of any train on the departure date. (No departure time will be indicated on your tickets.)
The best seat type if your priority is the cost and are traveling during less-crowded season/time.
For further information and photos, please visit official page at http://www.jreast.co.jp/e/ticket/types.html