quality:corruption, structural:expansion, structural:reformatting, linguistic:translation
September 2009 earthquake and tsunami

On September 28, 2009, at 17:48:11 UTC, an 8.1 magnitude earthquake struck 120 miles (190 km) off the coast of American Samoa, followed by smaller aftershocks. It was the largest earthquake of 2009. The quake occurred on the outer rise of the Kermadec-Tonga Subduction Zone. This is part of the Pacific Ring of Fire, where tectonic plates in the Earth's lithosphere meet, and earthquakes and volcanic activity are common. The quake struck 11.2 miles (18.0 km) below the ocean floor and generated an onsetting tsunami that killed more than 170 people in the Samoa Islands and Tonga. Four waves with heights from 15 feet (4.6 m) to 20 feet (6.1 m) high were reported to have reached up to one mile (1.6 km) inland on the island of Tutuila.

The Defense Logistics Agency worked with the Federal Emergency Management Agency to provide 16 ft × 16 ft (4.9 m × 4.9 m) humanitarian tents to the devastated areas of American Samoa.