2016 Chiloé earthquake

The 2016 Chiloé earthquake with a magnitude of Mww 7.6 struck 225 kilometres (140 mi) south-west of Puerto Montt in southern Chile at 11:22 local time, 25 December.[1][2] The earthquake triggered a tsunami warning on coasts located up to 1,000 kilometres (620 mi) from the quake's epicentre, generating massive evacuation across the Greater Chiloé Island, after advice from the Chilean government.[2] Although there was damage in some parts of the island, the government reported no casualties.

2016 Chiloé earthquake
2016 Chiloé earthquake.jpg
ShakeMap of the earthquake
UTC time2016-12-25 14:22:27
ISC event609939179
Local dateDecember 25, 2016 (2016-12-25)
Local time11:22 UTC-3
Magnitude7.6 Mw[1]
Depth34.6 km (USGS)[1]
Epicenter43°24′22″S 73°56′28″W / 43.406°S 73.941°W / -43.406; -73.941Coordinates: 43°24′22″S 73°56′28″W / 43.406°S 73.941°W / -43.406; -73.941
TypeThrust fault
Max. intensityVIII (Severe)
Aftershocks> 30


The earthquake occurred as a result of shallow thrust faulting in southern Chile. At the location of the earthquake, the oceanic Nazca plate converges with and subducts beneath the South America plate in an east-northeast direction, at a rate of approximately 73 mm/yr. The location, depth and shallow thrusting focal mechanism solution[3] all indicate this earthquake likely occurred on the subduction zone interface.[1]


A tsunami with a maximum height of 0.44 m (1.4 ft) was observed on Chiloé Island.[4]

See alsoEdit


  1. ^ a b c d "M7.6 – 39km SSW of Puerto Quellón, Chile". United States Geological Survey. Retrieved December 25, 2016.
  2. ^ a b "Chile earthquake triggers tsunami warning". BBC. 25 December 2016. Retrieved 25 December 2016.
  3. ^ "M 7.6 - 41km SW of Puerto Quellon, Chile --- Focal mechanism solution". USGS Earthquake.
  4. ^ "Tsunami Event: CHILOE, CHILE". ngdc.noaa.com.

External linksEdit