Japan's Meteorological Agency has lifted all tsunami advisories in northeastern and eastern prefectures that were put in place after a powerful earthquake.
A magnitude 7.4 earthquake struck off the coast of Fukushima Prefecture at around 6 AM on Tuesday. The Meteorological Agency issued a tsunami warning for the coast of Fukushima and Miyagi Prefectures and advisories for other prefectures along the Pacific Ocean.
Some residents of coastal areas evacuated to higher ground. A series of tsunami reached wide areas, including one measuring 1.4 meters at Sendai Port in Miyagi.
The agency later downgraded the warning to an advisory, and then lifted all the advisories before 1 PM.
Authorities say at least 10 people were injured in Tuesday's earthquake.
The Tokyo Electric Power Company says it has restored a cooling system at the Fukushima Daini nuclear power plant, which briefly stopped after the quake.
The operator also says tsunami waves reached the coastline next to the crippled Fukushima Daiichi nuclear power plant, but have so far caused no problems.
Shinkansen bullet trains, flights and other forms of transportation have been suspended or suffered delays in service.
Meteorological Agency officials warn that another quake of a similar scale could occur within a week, and this may also generate a tsunami.