A massive magnitude 7.6 earthquake struck northeast Japan at 11:15 p.m. local time on December 8th. The epicenter was 73 km east-northeast of Masawa at a shallow depth of 53 km. The shallow rupture sent intense shaking through Aomori, Iwate, and Miyagi, with reports of widespread strong ground motion across the region. Minutes after the rupture, the Japan Meteorological Agency issued a tsunami warning for the northeastern coast. Officials warned that waves up to 3 m are possible along parts of Aomori and Hokkaido. Coastal communities have been urged to move to higher ground. The time between an offshore rupture and the arrival of the first wave can be extremely short, which raises the immediate risk for anyone near the shoreline. The quake was felt hundreds of kilometers away toward Sendai, which shows how far the energy propagated. Emergency networks are receiving early reports of power loss, interior disruption and communication dropouts. Night conditions limit visibility and slow the first assessment of the situation along the coast. This region is positioned beside one of the most active tectonic boundaries on the planet. Aftershocks are expected, and some may be strong. Offshore monitoring is now critical as any additional movement along the plate interface could influence wave behavior and seafloor stability. Authorities are tracking rapid updates as they come in. This situation is developing, and we will update when needed.