(CNN) — A powerful magnitude-7.6 earthquake struck off Japan’s northeastern coast on Monday, triggering evacuation orders and a tsunami warning for parts of the coastline.

A tsunami of almost 10 feet (3 meters) could hit some areas of the coast, including Iwate, Aomori and parts of Hokkaido, according to the Japan Meteorological Agency (JMA). A 16-inch (40cm) tsunami height has already been observed in Aomori and Hokkaido, JMA said.

The agency said in an update early Tuesday local time that a 2.3-foot (0.7 meter) tsunami height has also been observed at Kuji port in Iwate. JMA warned that tsunami height could increase in the coming hours.

There were no immediate reports of casualties or significant damage.

The United States Geological Survey (USGS) said the earthquake struck at 11.1

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