. . "tral coast were briefly warned to head for higher ground.Residents were particularly alarmed in Constitucion, where much of the coastal downtown at the mouth of a river was obliterated by the tsunami caused by the 8.8-magnitude quake in 2010.TsunamiPanic also struck in Santiago and other cities, with people running out of skyscrapers, and many neighbourhoods were left partly or totally without ele" . .