Volcano Semeru Outburst in the Southeast Asian nation Prompts Emergency Relocations
Indonesia's Semeru volcano, the tallest summit on Java island, has exploded, covering several villages with volcanic ash, prompting evacuations and causing officials to elevate the warning to the maximum level.
The mountain in East Java province unleashed blistering plumes of hot ash and a combination of rock, lava and gas that moved up to 7km down its sides several times from noon to evening, while a thick column of hot clouds rose 1.2 miles into the sky, according to the nation's geological authority.
The eruptions that occurred throughout the day compelled authorities to raise the mountain's warning status on two occasions, from the third-highest level to the top level, the agency reported. No casualties have been reported.
More than 300 residents in the three villages most endangered in the area of Lumajang region were evacuated to official safe havens, according to a spokesperson for the national disaster mitigation agency.
He stated that increased activity of the volcano on the afternoon of Wednesday led officials to widen the hazard area to 8km from the crater. Residents were advised to stay clear from an area along the Kobokan River, which is the route of the lava flow, as scorching gases flowed down Semeru’s slopes.
Videos on online platforms showed a dense cloud of volcanic dust sweeping through a wooded ravine to a river beneath a bridge. Locals, some with faces smeared with volcanic dust and water, fled to makeshift refuges or left for other safe areas.
Local media reported that authorities were struggling to save about 178 people trapped on the 12,060-foot mountain at the Ranu Kumbolo monitoring post. The group comprised 137 climbers, 15 porters, seven escorts and six tourism officials, according to an official with the national park.
“They are currently safe at Ranu Kumbolo monitoring post,” an official stated in a video statement. He noted the station was situated 4.5km from the summit on the north side of the volcano, which is outside the trajectory of the hot cloud flow that was seen traveling to the south-southeast. Inclement conditions and precipitation required the team to spend the night there, he explained.
The volcano, also known as Great Mountain, has erupted many occasions in the last two centuries. Still, as is the situation with many of the 129 live volcanoes in the archipelago, tens of thousands of people still to reside on its fertile slopes.
Semeru’s previous significant explosion was in late 2021, when 51 people were lost their lives and hundreds others were burned and settlements were submerged in thick mud. The eruption forced the relocation of over ten thousand residents from their houses.
Indonesia, an archipelago of over 280 million people, sits along the Pacific “ring of fire”, a curved series of fault lines, and is susceptible to seismic events and volcanism.