A powerful magnitude 7.5 earthquake struck off Japan’s northeastern coast on Monday, prompting immediate evacuation orders and a tsunami warning for several coastal regions. Authorities are closely monitoring the situation, with early reports of injuries, power outages, and transportation disruptions.

Tsunami Warnings and Observations

The Japan Meteorological Agency (JMA) reported that tsunami waves were observed in multiple regions. A 2.3-foot (0.7-meter) wave hit Kuji Port in Iwate, while smaller waves, around 16 inches (40cm), were recorded in parts of Aomori and Hokkaido. After several hours, the JMA downgraded the warning to a tsunami advisory. The earthquake’s magnitude was also adjusted slightly from an initial 7.6 to 7.5.

Officials advised residents in coastal areas to evacuate to higher ground or seek shelter in safe buildings, including designated evacuation centers.

Earthquake Details

According to the United States Geological Survey (USGS), the quake occurred at 11:15 p.m. local time (9:15 a.m. ET), approximately 44 miles (70 km) offshore, at a depth of 33 miles. Tremors were felt as far as Tokyo, where residents reported shaking that lasted more than 30 seconds.

Chief Cabinet Secretary Minoru Kihara reported several injuries and minor fires in Aomori Prefecture. Widespread power outages affected Aomori and Iwate, and high-speed train services between Fukushima and Aomori were temporarily suspended. Some sections of major expressways were also closed for safety.

Risk of Aftershocks

Japanese disaster officials warned that there is a potential for follow-up earthquakes, possibly exceeding magnitude 8, in the northeastern coastal region. Morikubo Tsukasa, a senior disaster preparedness official, emphasized the need for continued vigilance and precautions among residents.

Nuclear Power Plants Monitored

Authorities confirmed that Higashidōri and Onagawa nuclear power plants reported no abnormalities. Other nuclear facilities are undergoing inspections to ensure safety. Prime Minister Sanae Takaichi, elected in October, pledged full coordination between the government and local officials to assess damage and implement emergency response measures. She emphasized that the government’s priority is human life and public safety.

Japan’s History of Earthquakes

Japan is located along the Pacific Ring of Fire, a region known for frequent seismic and volcanic activity. The most catastrophic recent earthquake was the 9.1-magnitude Tohoku earthquake in 2011, which triggered a massive tsunami and nuclear disaster at the Fukushima Daiichi nuclear power plant. That disaster claimed over 22,000 lives, left many missing, and caused long-term radioactive contamination in affected areas.

Authorities continue to monitor the situation and advise residents to stay alert and follow official evacuation orders. Emergency services and disaster response teams remain on high alert to manage potential aftershocks and further tsunami activity.