An 8.2 magnitude earthquake hit Alaska and has sparked a tsunami warning for the US West Coast, Hawaii and Canada.
The quake struck 157 miles (256km) south-east of Chiniak, Alaska, at 9.31am GMT on Tuesday.
As people prepare to evacuate the affected area, the residents of the Katmai National Park await instructions on how to get to safety.
People on Kodiak Island have been urged to stay away from the coast after the quake struck just 175 miles away.
Reports on social media suggest the tremors were felt as far south as Seatle and Vancouver.
The National Tsunami Warning Centre called people to start evacuating and move to the upper floor of a multi-story building.
Watch live webcam footage from Alaska’s Katmai National Park amid the ongoing tsunami warning threat
The warning stated: “If you are in a tsunami warning area: Evacuate inland or to higher ground above and beyond designated tsunami hazard zones or move to an upper floor of a multi-story building depending on your situation.
“If you are in a tsunami watch area: Prepare to take action and stay alert for further information.
“If you’re on the beach and the tide suddenly goes out, head inland immediately.”