An 8.2-magnitude earthquake off the coast of northern Chile on April 1, 2014 was followed by at least 10 aftershocks. This activity initially generated tsunami warnings across the Pacific.
Above: Tsunami propagation forecast following the April 1, 2014 earthquake off the coast of Chile. Credit: NOAA’s Pacific Tsunami Warning Center.
The tsunami warnings were later canceled, according to NOAA’s Pacific Tsunami Warning Center, except for the coastal regions of Chile and Peru.
An 8.2 earthquake, which is extremely rare, means it has so much energy that it is roughly equivalent of 6 million tons of TNT.
According to Anne Sheehan from the University of Colorado at Boulder, who spoke to Universe Today:
“For predicting an ensuing tsunami, to have data on the earthquake itself — getting its epicenter located and knowing its size as accurately as possible plays a big role,” she said, “and the USGS plays a big role in getting that information out as quickly as possible.