A moderately strong magnitude 6.6 earthquake struck off the coast of central Japan Tuesday night, rattling an area still traumatized by a devastating January jolt.

No tsunami alert was issued and there were no immediate reports of damage.

A woman in her 70s was later reported injured in the town of Tsubata, Kyodo news agency reported, citing the prefectural government.

The Japan Meteorological Agency said the quake hit at a depth of 7 kilometers at 10:47 p.m. off the Noto Peninsula.

It originally gave the quake a provisional magnitude of 6.4 and a depth of 10 km.

"This earthquake may cause slight changes to sea levels along the coast of Japan, but there is no expectation of damage," the Cabinet Office said on X.

No abnormality has been detected in a local nuclear power plant, public broadcaster NHK quoted nuclear regulation authorities as saying.

An NHK reporter stationed at Ishikawa region described feeling the vertical "thrust" when it happened, adding traffic lights near him remained standing.

Sitting on top of four major tectonic plates along the western edge of the Pacific "Ring of Fire," Japan is one of the world's most tectonically active countries.

The archipelago, home to around 125 million people, experiences around 1,500 jolts every year and accounts for around 18% of the world's earthquakes.

The vast majority are mild, although the damage they cause varies according to their location and the depth below the Earth's surface at which they strike.

On New Year's Day this year, over 400 people died after a massive earthquake hit the peninsula, including "quake-linked" deaths as well as those killed directly in the disaster.

The Jan. 1 quake and its aftershocks toppled buildings, caused fires and knocked out infrastructure at a time when families were celebrating the new year.