In the wake of the 8.8 earthquake that hit Chile on February 27, 2010, tsunami warnings was issued throughout the Pacific Ocean.
A tsunami warning was first declared for Chile and Peru, and a tsunami watch for Ecuador, Colombia, Antarctica, Panama and Costa Rica. The warning was later extended to a Pacific Ocean-wide warning, covering all coastal areas on the Pacific Ocean except the west coast of the United States, British Columbia, and Alaska. Hawaiian media reported that tsunami warning sirens sounded at 6 am local time. The U.S. Tsunami Warning Center issued advisories about potential tidal waves of less than 1 m (3 ft 3 in) striking the Pacific Ocean coastline between California and most of Alaska late in the afternoon or through the evening 12 or more hours after the initial earthquake.
The tsunami warning was cancelled for all countries except Japan and Russia in PTWC Bulletin 18 of 00:12 UTC on 28 February 2010.
In general, tsunamis tend to come in several waves, of which the first may not be the highest.
A tsunami amplitude of up to 2.6 m (8 ft 6 in) high was recorded in the sea at Valparaíso, Chile. A wave amplitude of 2.34 m (7.68 ft) was recorded at Talcahuano in the Biobío Region. Some sources claim that a massive 40 m (130 ft) tsunami struck the Juan Fernández Islands, located 667 km (414 mi) off the coast of Chile, resulting in catastrophic damage. However, this claim is not yet supported by officially ...