Small tsunami waves have hit northern Japan following a powerful 8.
2-magnitude earthquake thousands of kilometres away across the Pacific Ocean in Chile, officials say.
However Indonesia has not seen any waves and New Zealand and Australia say there is no tsunami threat to their shores.
The Japan Meteorological Agency said waves of 20 centimetres were monitored in Kuji, Iwate prefecture, early on Thursday.
Minor tsunamis were also monitored in several other areas of northern Japan, the agency said, adding that higher waves may hit Japan later.
Earlier in the day, Japan issued a tsunami advisory, saying waves of up to one metre above normal sea levels may hit eastern Pacific coast regions, but were unlikely to cause damage.
Large areas of the coastline covered by the advisory were also hit by the 2011 quake and tsunami, which killed more than 18,000 people and triggered a nuclear accident in Fukushima.
The agency warned people to leave the coast but said it did not expect damage from the waves.
“Get out of the water and leave the coast immediately,” it said.
But it added: “Though there may be slight sea-level change in coastal regions, no tsunami damage is expected.”
Local authorities issued evacuation advisories to more than 22,000 people living near the coastline in Iwate prefecture, northern Japan, public broadcaster NHK said.
Television footage showed local residents fleeing to nearby shelter in Kesennuma, Miyagi prefecture, where more than 1000 people were killed in the 2011 tsunami.
In 1960, a 9.5-magnitude earthquake in Chile sent a tsunami across the Pacific that killed more than 140 people in Japan.
Indonesia also said it could be hit by a small tsunami from the quake off Chile, which killed at least six people and caused nearly a million to evacuate their homes along the coast.
Waves of up to half a metre had been expected to hit the eastern region of Papua shortly after 0900 AEDT but officials said nothing had been detected so far.
“Until now there are no signs of even a small tsunami. We are monitoring closely,” said Frangky Ulus from the Indonesia Tsunami Early Warning System in Jayapura, Papua.
Authorities in 19 provinces of Indonesia were alerted earlier as a precaution and people were urged to stay away from beaches.