A 7.4-magnitude earthquake struck the Alaska Peninsula early Sunday morning, the US Geological Survey said.
The US tsunami warning system issued a warning of a possible tsunami after the quake.
The center added that the epicenter of the earthquake was at a depth of 9.3 km.
"A tsunami was generated by this event, but no longer poses a threat," the NWS National Tsunami Warning Center said. "Some areas may continue to see small sea level changes."
In a brief tsunami warning before the advisory, weather officials had listed times spanning about 90 minutes when tsunami waves were expected to hit the shore "from Chignik Bay to Unimak Pass."
"Significant inundation is possible or already occurring," the service's Anchorage office said on Twitter in announcing the earlier warning. "Move inland to higher ground.