The Japan Meteorological Agency (JMA) issued a tsunami warning on Tuesday after a magnitude 5.9 earthquake hit Izu and Ogasawara islands (south of Tokyo).
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The Izu Islands and Ogasawara Islands, located about a hundred kilometers south of Tokyo and about 1,000 km away from the capital, are still at risk of a one-meter-high tsunami, the JMA said.
Both Izu and Ogasawara are sparsely populated and administratively part of Tokyo Prefecture.
The quake struck at 8:14 local time on Tuesday (23:14 GMT on Monday), about 10 km under the sea off the coast of Torishima Island, south of the Izu archipelago, according to JMA.
Japanese authorities are warning of the possibility of landfall on the islands at around 9:00 local time (Tuesday 00:00 GMT) and are advising people to stay away from the sea and surrounding areas.
As Japan sits on one of the world's most active seismic zones, known as the Ring of Fire, and is prone to frequent earthquakes, its infrastructure is well-designed to withstand tremors, with a sophisticated anti-tsunami warning system. .