An earthquake with a 6.0 magnitude struck south of Buru Island in the Moluccas Islands province in eastern Indonesia, the country's meteorology, climatology and geophysical agency (BMKG) said on Tuesday.
The epicentre of the earthquake was 41.7 kilometres beneath the Pacific seabed, less than 50 kilometres off the coast of Miyagi prefecture, the USGS said on its website, rating the risk of casualties and damage as low.
A powerful 7.8 earthquake struck the Alaska Peninsula late on Tuesday, triggering a tsunami warning that sent residents fleeing to higher ground before it was called off without any damaging waves.
Earthquakes, volcanic eruptions and tsunamis because of its location on the “Ring of Fire,” an arc of volcanoes and fault lines that arcs the Pacific, frequently strike Indonesia, a vast archipelago of 270 million people.
USGS said the quake struck at a depth of 51.4 kilometres (32 miles) off the eastern tip of Timor Island, which is split between East Timor and Indonesia.
The agency issued a tsunami advisory for up to a meter (3-foot) sea surge in parts of Miyagi and Fukushima prefectures. NHK national television said the tsunami might have reached some areas already.
A powerful earthquake struck western Mexico on Monday, shaking buildings hundreds of miles away in Mexico City on the anniversary of two major tremors in 1985 and 2017, seismologists said.
The massive Dec. 26, 2004, tsunami was triggered by a magnitude 9.1 earthquake off Sumatra island. The giant wall of water killed about 230,000 people in a dozen countries as far away as East Africa. Indonesia's Aceh province, which was closest to the earthquake, was hit first and hardest.
Indonesia's disaster agency pegged the quake at magnitude 7.4 and warned it could spark a tsunami as high as three metres). The warning was lifted around three hours later.