A powerful magnitude 8.8 earthquake off Russia's far eastern Kamchatka Peninsula triggered 4-metre (13-foot) tsunami waves and sparked evacuation orders in Hawaii and across the Pacific on Wednesday.
The shallow earthquake damaged buildings and injured several people in the remote Russian region, while much of Japan's eastern seaboard - devastated by a 9.0 magnitude earthquake and tsunami in 2011 - was ordered to evacuate.
In Hawaii, coastal residents were told to get to high ground or the fourth floor or above of buildings, and the U.S. Coast Guard ordered ships out of harbours as the tsunami approached.
"Take Action! Destructive tsunami waves expected," the Honolulu Department of Emergency Management said on X. No major waves were seen along the western-most of the major Hawaiian islands just before sunset when the first tsunami was expected to hit, live footage showed.
Tsunami waves earlier struck parts of Kamchatka, partially flooding the port and a fish processing plant in the town of Severo-Kurilsk and sweeping vessels from their moorings, regional officials and Russia's emergency ministry said.
"Today's earthquake was serious and the strongest in decades of tremors," Kamchatka Governor Vladimir Solodov said in a video posted on the Telegram messaging app. Russian scientists said it was the most powerful quake to hit the region since 1952.
Russia's Ministry for Emergency Services said on Telegram that a kindergarten was damaged but most buildings withstood the quake. No serious injuries or fatalities have been reported.
The U.S. Geological Survey said the earthquake was shallow at a depth of 19.3 km (12 miles), and centred 119 km east-southeast of Petropavlovsk-Kamchatsky, a city of 165,000.
It revised the magnitude up from 8.0 earlier, and reported a series of strong aftershocks up to a magnitude of 6.9.
A resident in the city of Petropavlovsk-Kamchatsky said the shaking rumbled for several minutes.
