Wide swaths of the south Pacific, Asia and Australia braced for a tsunami after a devastating earthquake hit the coast of Chile on Saturday.
Officials in Japan and Australia warned a tsunami from the earthquake was likely to hit Asian shorelines within 24 hours.
The Pacific Tsunami Warning Center in Hawaii issued a tsunami caution for areas across the region.
"Sea-level readings confirm that a tsunami has been generated which could cause widespread damage," the center said in a bulletin after the magnitude-8.8 quake. "Authorities should take appropriate action to respond to this threat."
The center noted that the first waves after a quake are not necessarily the largest and said tsunami wave heights are difficult to predict because they can vary significantly along a coast due to the local topography.
Earthquakes across the Pacific have had deadly effects on Asia in the past.
A tsunami after a magnitude-9.5 quake that struck Chile in 1960, the largest earthquake ever recorded, killed about 140 people in Japan, 61 in Hawaii and 32 in the Philippines. That tsunami was about 3.3 to 13 feet (one to four meters) in height, Japan's Meteorological Agency said.
The tsunami from Saturday's quake was likely to be much smaller because the quake itself was not as strong.