Indonesia

What:

The Centre for Volcanology and Geological Hazard Mitigation (PVMBG) has raised the alert status of Mount Ruang to the highest-level following eruptions on 30 April. The volcano expelled a column of ash that rose more than 5kms (3.1 miles) into the sky. The authorities also warned of a possible tsunami due to volcanic material collapsing into the ocean.

Background:

Eruptions in Mount Ruang were also reported on 17 April, which prompted the PVMBG to issue its highest-level alert, a tsunami alert, closure of the airport in Manado city for several days, the evacuation of 11,000 people, and damage to several houses.

Why:

Indonesia is located along the Ring of Fire, a series of seismic fault lines around the Pacific Ocean, which makes the country susceptible to volcanic activity. There are 120 active volcanoes located in Indonesia. Indonesia’s disaster mitigation agency reported that the eruption corresponded with a spike in seismic activity and deep volcanic earthquakes.

So What:

• People have been instructed to maintain a distance of at least 6 kilometres (3.7 miles) from the mountain due to the risk of ash dispersion, falling rocks, hot volcanic clouds, and the potential for a tsunami.
• Evacuation orders for people living within 6kms radius in the P. Tagulandang area have been reissued.
• Flight operations at the Sam Ratulangi airport in Manado City were suspended again due to the possible spread of volcanic ash and will remain suspended until 1200 hours on 01 May.

Outlook:

The assessment from the volcanology agency underscores the ongoing high potential for further volcanic eruptions, necessitating the maintenance of alert levels. Residents residing near Mount Ruang are advised to wear masks to avoid exposure to volcanic ash. Additionally, flight disruptions may persist, contingent upon prevailing weather conditions. Organizations are advised to remain updated on the developments and advisories published by authorities. The developments of Mount Ruang can be found through the MAGMA Indonesia application or via the website (https://magma.esdm.go.id).