Reports indicate that the northeastern coast of Japan has recently experienced a series of significant earthquakes, with the most powerful having a magnitude of 7.6.

Here is a report summarizing the details of these recent seismic events, primarily focusing on the major one:

🚨 Report on Recent Major Earthquake in Northern Japan

The region off the coast of Aomori Prefecture in northern Japan has been the center of recent seismic activity, including a powerful earthquake and subsequent aftershocks.

Key Event Details (Magnitude 7.6 Quake)

Date and Time: Late Monday, December 8, 2025 (local time).
Magnitude: Approximately 7.6 (reported as 7.5 by the Japan Meteorological Agency – JMA).
Location/Epicenter: Offshore, about 80 km off the coast of Aomori Prefecture, the northernmost prefecture of Japan’s main Honshu island.
Depth: Roughly 50 km below sea level.
Maximum Seismic Intensity: Upper 6 on the JMA scale (where standing becomes impossible and heavy furniture can topple) recorded in Hachinohe City, Aomori.

Impact and Response

Tsunami: The quake triggered tsunami warnings for coastal areas including Hokkaido, Aomori, and Iwate, with initial warnings predicting waves up to 3 meters. The highest measured wave was approximately 70 cm (2 feet, 4 inches) recorded at Kuji Port in Iwate, with smaller waves in other communities. Tsunami warnings were eventually downgraded to advisories and then lifted.
Casualties & Damage: Reports indicate at least 34 people were injured across the region, mostly from falling objects. Some light structural damage was reported.
Evacuations: More than 28,000 residents were advised to evacuate, with some seeking shelter as a precautionary measure.
Infrastructure: Power was temporarily lost to thousands of homes, and bullet-train services were briefly suspended for safety checks. Nuclear facilities in the region, including the Higashidori and Onagawa plants, reported no significant abnormalities, though a minor spill of water occurred at the Rokkasho reprocessing plant.

Subsequent Seismic Activity

The main earthquake was followed by a significant aftershock days later, along with numerous smaller tremors:

Magnitude 6.7 Quake: A strong aftershock of magnitude 6.7 struck the same general area off the northern Japan coast on Friday, December 12, causing small tsunami waves but no immediate damage reports.
Magnitude 6.5 Quake: A day after the main quake, a magnitude 6.5 earthquake struck the Hokkaido region.
Ongoing Activity: Japan has experienced dozens of earthquakes in the week following the magnitude 7.6 event, as aftershocks continue to rattle the area.

“Megaquake” Alert

The Japan Meteorological Agency (JMA) issued a special alert warning of a slightly increased risk of a magnitude 8-level “megaquake” and tsunami along Japan’s northeastern coast from Chiba to Hokkaido. This is an elevated caution based on the recent activity in the volatile region, which is acutely aware of the devastating 2011 magnitude 9.0 quake and tsunami.