At 07:24 Beijing time on 30 July 2025, a magnitude 8.7 earthquake occurred offshore Kamchatka(52.40° N, 160.20° E)at a focal depth of 10km. The China Earthquake Networks Center(CENC)issued an official rapid report 24 minutes after the event and, in collaboration with multiple institutions, initiated the production of earthquake emergency products, including source parameters, seismotectonic information, historical seismicity, focal mechanism solutions, and rupture process models. The results indicate that the earthquake was dominated by thrust faulting. The rupture propagated primarily toward the southwest, lasted approximately 200s, extended over 500km, and reached a maximum slip of 6.6m. This event highlights the deep subduction dynamics of the Pacific Plate beneath the southeastern Kamchatka Peninsula and provides an important case for understanding the recurrence behavior of great earthquakes at plate boundaries.