Overview

• USGS measured a magnitude 7.8 earthquake at about 10 km depth, roughly 128 km (80 miles) east of Petropavlovsk-Kamchatsky at 11:58 a.m. PT.
• Multiple aftershocks, including magnitude 5.8 and 5.4 events, followed within minutes as USGS issued a Green alert for fatalities and Yellow for economic losses.
• Russian authorities warned of coastal waves of 0.5–1.5 meters and placed emergency services on high readiness, with no immediate reports of damage or casualties.
• A U.S. Tsunami Advisory for the Western Aleutians was later withdrawn, and officials said there was no threat to the U.S. West Coast or British Columbia.
• After evaluation, the Pacific Tsunami Warning Center reported no danger to Hawaii as sea-level monitoring continued across the region.