According to The Guardian,
A tsunami about 6 feet tall or higher was expected to hit the Pacific coast of Japan's northernmost island of Hokkaido and main island of Honshu after 9:10 p.m. (7:10 a.m. EST), [Japan's meteorological] agency said.Some current media reports appear confused. I'll post further details as they become available.
UPDATE: According to the German news agency DPA, the Russian tsunami alert has been cancelled and the people who had been evacuated have been returned to their homes.
According to FOX News, a series of small waves hit Japan, but no serious damage has been reported. (They wouldn't lie about this, would they?)