A magnitude 7.2 earthquake has hit northern Japan, shaking buildings in Tokyo and prompting the country's meteorological agency to issue a tsunami alert for the northeastern coast. There are no immediate reports of damage or injuries, but officials are still assessing the situation.
The meteorological agency says the quake hit at 11:45 a.m. local time Wednesday and was centered about 200 miles north of Tokyo at a depth of about 6.2 miles.
It warned that a tsunami of about 20 inches would hit the coast around noon Wednesday, but that time passed without any reports of a wave reaching the shore.
There was a 6.3 magnitude aftershock shortly after the main quake.