Volcano Mahameru Outburst in the Southeast Asian nation Prompts Emergency Relocations
Indonesia's Semeru volcano, the tallest summit on Java island, has erupted, covering several villages with volcanic ash, prompting evacuations and causing officials to elevate the alert to the highest level.
The mountain in East Java province unleashed searing clouds of hot ash and a mixture of rock, lava and gas that travelled up to 4 miles down its slopes multiple times from noon to dusk, while a dense plume of hot clouds rose 2km into the sky, according to Indonesia’s Geology Agency.
The outbursts that occurred throughout the day forced officials to raise the mountain's warning status on two occasions, from the level three to the highest, the authority reported. No casualties have been announced.
Over three hundred inhabitants in the three communities most at risk in the area of Lumajang region were relocated to official safe havens, as mentioned by a spokesperson for the national disaster mitigation agency.
He stated that heightened volcanic movements of the mountain on Wednesday afternoon prompted officials to expand the hazard area to 8km from the summit. People were advised to keep away from an area along the Besuk Kobokan River, which is the route of the molten rock stream, as scorching gases flowed down the volcano's sides.
Footage on online platforms displayed a thick plume of ash sweeping through a wooded ravine to a river beneath a overpass. Locals, some with faces smeared with ash and water, escaped to makeshift refuges or departed for other safe areas.
Local media reported that authorities were facing challenges to rescue about 178 individuals stranded on the 12,060-foot peak at the Ranu Kumbolo monitoring post. The party comprised 137 climbers, 15 porters, seven guides and six tourism officials, according to an spokesperson with the protected area.
“They remain secure at Ranu Kumbolo monitoring post,” a spokesperson stated in a video statement. He noted the post was located 4.5km from the crater on the north side of the volcano, which is outside the trajectory of the hot cloud flow that was observed traveling to the southeast direction. Inclement conditions and rain forced the group to remain overnight there, he added.
Semeru, also known as Mahameru, has burst many occasions in the last two centuries. Still, as is the case with many of the 129 active volcanoes in the archipelago, thousands of people continue to reside on its fertile slopes.
The mountain's previous significant explosion was in late 2021, when 51 individuals were lost their lives and several hundred others were burned and settlements were submerged in thick mud. The event led to the evacuation of over ten thousand residents from their homes.
The country, an archipelago of over 280 million inhabitants, sits along the Pacific seismic belt, a curved series of fault lines, and is prone to seismic events and volcanic activity.