Officials worry that part of the volcano could collapse into the sea and cause a tsunami as in a 1871 eruption there. Tagulandang island to the volcano’s northeast is again at risk, and its ...

Indonesian authorities issued a tsunami alert on Wednesday after eruptions at Ruang mountain sent ash thousands of feet high. Officials ordered more than 11,000 people to leave the area.

Although it was pointed out that the tsunami could have been triggered by an underwater volcanic eruption or a seabed landslide, the cause remained a mystery. The government’s Earthquake ...

A volcano on Flores Island in Indonesia woke up island residents early Friday when the latest eruptive episode sent ash and ...

The tsunami could have been caused by an underwater volcano eruption or a quake-triggered seabed landslide. But JMA officials said they had not uncovered enough details to determine the cause.

In 1741, volcanic activity on Oshima-Oshima, a small island off Japan's northern prefecture of Hokkaido, caused a mountain to collapse, triggering huge tsunami waves. More than 1,400 people were ...

A huge volcanic eruption has been observed on the Indonesian island of Flores but no significant tidal anomalies have been ...

The Alaska Volcano Observatory says that if the snowcapped volcano erupts, the impacts could include damage to aircraft from ash.

The known sequence of Maunaloa’s 1868 events began with an eruptive phase beginning at about dawn March 27 at the summit, lasting a couple of hours. Seismicity escalated thereafter, with Kaʻū ...

March 27 marks the anniversary of the onset of Mauna Loa’s dramatic 1868 eruption, when lava flows from the Southwest Rift Zone severely impacted the Ka‘u district. However, this may not have been the ...