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The 1960 Valdivia earthquake and tsunami (Spanish: Terremoto de Valdivia) or the Great Chilean earthquake (Gran terremoto de Chile) on 22 May 1960 was the most powerful earthquake ever recorded. Most studies have placed it at 9.4–9.6 on the moment magnitude scale , [ 1 ] while some studies have placed the magnitude lower than 9.4.
The first one was a magnitude 6.7 M W earthquake that struck off the coast of Biobío, Chile, at 23:21 on 15 March 2010 at the epicenter, at a depth of 18 kilometres (11 mi). The second earthquake struck on land in the region at 22:58 (UTC) on 2 April 2010 at 5.9 M W and at a depth of 39 km (24 mi).
The 1868 Arica earthquake occurred on 13 August 1868, near Arica, then part of Peru, now part of Chile, at 21:30 UTC. It had an estimated magnitude between 8.5 and 9.3. A tsunami (or multiple tsunamis) in the Pacific Ocean was produced by the earthquake, which was recorded in Hawaii, Japan, Australia, and New Zealand. [3][4]
The latest in a string of powerful earthquakes shook part of the southwestern Pacific on Friday morning, local time, leading to far-reaching tsunami concerns. The magnitude 8.1 earthquake occurred ...
Christopher Cann, USA TODAY. August 22, 2024 at 11:07 AM. A magnitude 4.7 earthquake struck the Big Island of Hawaii on Thursday as officials tracked two rapidly developing storms in the Pacific ...
In some regions, tsunami sirens are used to help alert the public. The Pacific Tsunami Warning Center (PTWC), located on Ford Island, Hawaii, is one of two tsunami warning centers in the United States, covering Hawaii, Guam, American Samoa and the Northern Mariana Islands in the Pacific, as well as Puerto Rico, the U.S. Virgin Islands and the British Virgin Islands in the Caribbean Sea.
Jan. 4—The U.S. Geological Survey recorded a magnitude 4.3 earthquake this afternoon northeast of Pahala on the island of Hawaii, according to the Hawaiian Volcano Observatory. USGS says the ...
The tsunami warning was later canceled for all countries except Chile and Peru within a few hours of the earthquake. [22] The tsunami warning was canceled for both Chile and Peru at around 4:58 UTC on 2 April. Hawaii was under a tsunami advisory for over 13 hours. [23] [24] On 3 April local time, tsunamis were observed in Japan. [25]