The earthquake, one of the most powerful recorded, occurred at 11:25 local time (23:00 GMT Tuesday) and prompted immediate evacuation orders in affected regions, including northern Japan and parts of the US. Waves reached notable heights in various locations, with Crescent City, California recording 1.09m, and reports of 1.7m waves in Hawaii. Despite these alarming measurements, many tsunami warnings were eventually downgraded.

In Russia, while some coastal areas faced waves up to 5m, initial assessments indicated no serious casualties. Kamchatka's governor called it the strongest quake in decades but confirmed the tsunami warning had been lifted for most areas. Japan's Prime Minister reassured that no significant damage was noted, even after more than two million residents were temporarily evacuated along the Pacific coast.

Additionally, French Polynesia received alerts and warnings for greater than a meter wave activity, with continued advisories for coastal communities in New Zealand, Australia, and several South American nations. Nonetheless, China has since cleared its advisory, and the Philippines have canceled their alerts. International agencies continue to monitor potential environments for tsunami risks.