An earthquake hit 50-miles off the coast, with the destructive power 30 times more powerful than the Hiroshima bomb.

23:04, Wed, Jul 16, 2025 Updated: 23:04, Wed, Jul 16, 2025

Whale tail rises above water off Alaska coastlive

An earthquake has struck off the coast of Alaska. (Image: Getty)

A tsunami warning has been issued in a US state after a 7.2 magnitude earthquake struck off the coast. The alert includes the coastal areas of Alaska from Kennedy Entrance, Alaska, 40 miles southwest of Homer, to Unimak Pass, 80 miles northeast of Unalaska. Experts say that the warning means a tsunami with "significant inundation" is "expected or occurring".

The location of the quake was 45 miles south east of the remote Atka Village, according to the US Tsunami Warning System.

The National Tsunami Warning Centre added: "Warnings indicate that widespread dangerous coastal flooding accompanied by powerful currents are possible and may continue for several hours after the initial wave arrival." A video has been posted online of sirens going off in Old Harbor. 

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3 mins ago23:04 William Morgan

The large stretch of Alaska's coast under Tsunami threat

The stretch of the northerly US state that has been issued urgent tsnuami warnings is called the Alaska Peninsula, a spit of land and islands that stretch out into the Pacific.

Many settlements in the region are involved in the fishing industry, including the towns of Cold Bay, King Cove and Chignik.

Residents in these areas have all received emergency alerts to their phones following the 7.2 quake that struck around 50 miles offshore.

Alaska tsunami warning

Residents of the Alaska Peninsula in the state' northwest have been warned (Image: tsunami.gov)

36 mins ago22:31 Adam Toms

Tsunami impacts

Experts say that impacts of the tsunami "will vary at different locations in the warning areas".

They then described its potential effects as follows:

 * A tsunami with damaging waves and powerful currents is

   possible.

 * Repeated coastal flooding is possible as waves arrive

   onshore, move inland, and drain back into the ocean.

 * Strong and unusual waves, currents and inland flooding

   can drown or injure people and weaken or destroy structures

   on land and in water.

 * Water filled with floating or submerged debris that can

   injure or kill people and weaken or destroy buildings and

   bridges is possible.

 * Strong and unusual currents and waves in harbors,

   marinas, bays, and inlets may be especially

   destructive.

 * Some impacts may continue for many hours to days after

   arrival of the first wave.

 * The first wave may not be the largest so later waves may

   be larger.

 * Each wave may last 5 to 45 minutes as a wave encroaches

   and recedes.

 * Coasts facing all directions are threatened because the

   waves can wrap around islands and headlands and into bays.

 * Strong shaking or rolling of the ground indicates an

   earthquake has occurred and a tsunami may be imminent.

 * A rapidly receding or receded shoreline, unusual waves and

   sounds, and strong currents are signs of a tsunami.

 * The tsunami may appear as water moving rapidly out to sea,

   a gentle rising tide like flood with no breaking wave,

   as a series of breaking waves, or a frothy wall of water.

39 mins ago22:28 Adam Toms

Recommended actions

The US National Tsunami Warning Centre has issued advice to residents.

"Actions to protect human life and property will vary within tsunami warning areas," experts said.

They added:

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.

 * Move out of the water, off the beach, and away from

   harbors, marinas, breakwaters, bays and inlets.

 * Be alert to and follow instructions from your local

   emergency officials because they may have more detailed or

   specific information for your location.

 * If you feel a strong earthquake or extended ground rolling

   take immediate protective actions such as moving inland

   and/or uphill preferably by foot.

 * Boat operators,

     * Where time and conditions permit, move your boat out to

       sea to a depth of at least 180 feet.

     * If at sea avoid entering shallow water, harbors,

       marinas, bays, and inlets to avoid floating and

       submerged debris and strong currents.

 * Do not go to the shore to observe the tsunami.

 * Do not return to the coast until local emergency officials

   indicate it is safe to do so.

44 mins ago22:23 Adam Toms

Tsunami forecast

Experts say tsunami activity is forecasted to start at the following locations at the specified times:

Sand Point       1330 AKDT Jul 16

Cold Bay         1425 AKDT Jul 16

Kodiak           1440 AKDT Jul 16

Kodiak Island Alaska

Experts have detailed where a tsunami could hit. (Image: Getty)

47 mins ago22:20 Adam Toms

Preliminary earthquake readings

The National Tsunami Warning Centre has issued its preliminary earthquake readings.

They are:

* The following parameters are based on a rapid preliminary assessment of the earthquake and changes may occur.

 * Magnitude      7.3

 * Origin Time    1238 AKDT Jul 16 2025

                  1338  PDT Jul 16 2025

                  2038  UTC Jul 16 2025

 * Coordinates    54.5 North 160.5 West

 * Depth          12 miles

 * Location       55 miles S of Sand Point, Alaska

                  605 miles SW of Anchorage, Alaska

49 mins ago22:18 Adam Toms

Warning issued

A tsunami alert issued by the US National Warning System reads:

A tsunami has been confirmed and some impacts are expected

 * Revised magnitude

...THE TSUNAMI WARNING REMAINS IN EFFECT...

Tsunami Warning in Effect for;

 * SOUTH ALASKA AND THE ALASKA PENINSULA, Pacific coasts from

   Kennedy Entrance, Alaska (40 miles SW of Homer) to Unimak

   Pass, Alaska (80 miles NE of Unalaska)

For other US and Canadian Pacific coasts in North America, there is no tsunami threat.

Coastal Alaska

A warning is active for the Alaskan coast. (Image: Getty)

54 mins ago22:13 Adam Toms

Sirens ring out

A video has been posted online of sirens blaring in Old Harbor.

@ty_murrel wrote on X: "Sirens going off in Old Harbor AK."

@curiouscallista replied: "Phone just started blaring the warning!

"Thanks for the warning, I was going to walk on the beach!!"

56 mins ago22:11 Adam Toms

Welcome to our live blog

An earthquake has struck off the coast of Alaska, triggering a tsunami warning.

The quake had a magnitude of 7.2, according to experts.

They added that warning being issued means a tsunami with "significant inundation" is "expected or occuring".

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