Officials from Japan to California issued warnings after an 8.8-magnitude quake off Russia’s coast. Hours later, there were no immediate reports of major damage, although some areas remained on alert.

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.

One of the world’s strongest earthquakes struck Russia’s Far East on Wednesday as an 8.8-magnitude tremor set off a tsunami in the northern Pacific and prompted warnings for Alaska, Hawaii and south toward New Zealand.