The magnitude 8.8 quake is believed to be the joint sixth-largest on record, though only minor injuries near the epicenter have been reported.

A tsunami has hit coastal areas of Russia’s Kuril Islands and Japan’s large northern island of Hokkaido after an 8.7-magnitude earthquake early on Wednesday. Tsunami warning sirens sounded in Honolulu, Hawaii, where people were told to move to higher ground.

Tsunami warnings are being downgraded in most areas following one of this century’s most powerful earthquakes in Russia.