A harmless 10-centimeter swell has hit the coast of North Halmahera in North Maluku, an official said.
Fauzi, a geophysicist from the Meteorology, Climatology and Geophysics Agency (BMKG), said the minor tsunami was now headed to Bitung, Manado, in North Sulawesi.
However, he said that people should remain on alert because the danger had not yet passed.
BMKG earlier warned that a tsunami might be heading to Papua, North Maluku and North Sulawesi after the 8.9 magnitude earthquake in northeastern Japan.
There are no reports yet of swells hitting other coastal areas in Indonesia.
Taiwanese authorities said earlier on Friday that minor tsunamis reached the island’s coastline without causing any damage.
Waves around 10 centimeters high hit Taiwan’s east and northeast coasts in the evening, the central weather bureau said.
The bureau said it did not expect more and bigger waves but will only lift the warning when the Hawaii-based Pacific Tsunami Warning Center does so.