Japan lifted all tsunami alerts after a magnitude 7.4 earthquake off the coast of Fukushima, home to the nuclear power plant crippled in the March 2011 triple disaster.

The temblor, an aftershock of the magnitude 9 quake five years ago, briefly knocked offline a cooling system for spent nuclear fuel at a separate Fukushima plant, and prompted authorities to issue the highest tsunami warnings for five years.

It struck at 5:59 a.m. local time Nov. 22 at a depth of 25 kilometers (15.5 miles), according to the Japan Meteorological Agency, causing a tsunami of more than one meter on the coast of Miyagi prefecture and smaller waves elsewhere.

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