Alaska tsunami LIVE: Warning issued after 7.2 magnitude earthquake | World | News

 * 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.