On Monday, Japan's Cabinet Office and the Japan Meteorological Agency issued a warning for northern coastal areas due to a 7.5 magnitude earthquake that struck near the Chishima trough. The quake occurred at approximately 4:53 PM local time at a depth of about 10 kilometers (6 miles). Following the earthquake, a tsunami alert was issued, with waves detected at 80 centimeters (2.6 feet) at Kuji port and 40 centimeters (1.3 feet) at another port in Iwate Prefecture. Residents were urged to prepare for potential aftershocks and to avoid coastal regions, with warnings of waves up to 3 meters (10 feet). The advisory is not a prediction of a mega-quake but indicates a 1% chance of such an event occurring in the coming week. Evacuation advisories were issued for over 128,000 residents across Iwate and three other northern prefectures. Fortunately, no significant injuries or damages have been reported, and nuclear facilities in the region remain secure. This advisory follows a similar one issued after a major earthquake in December 2022, which did not result in significant aftershocks.