Volcano Semeru Outburst in the Southeast Asian nation Prompts Emergency Relocations
Indonesia's Semeru volcano, the tallest summit on the island of Java, has exploded, covering multiple communities with volcanic ash, prompting evacuations and leading authorities to raise the alert to the highest level.
The mountain in the province of East Java unleashed searing clouds of hot ash and a mixture of stone, molten rock, and gases that moved up to 7km down its slopes several times from midday to evening, while a dense plume of hot clouds rose 2km into the sky, as stated by the nation's geological authority.
The eruptions that occurred throughout the day compelled officials to raise the mountain's warning status twice, from the third-highest level to the top level, the agency reported. No deaths or injuries have been reported.
Over three hundred residents in the three villages most at risk in the area of Lumajang were evacuated to official safe havens, according to a spokesperson for the national disaster mitigation agency.
He stated that heightened volcanic movements of the volcano on the afternoon of Wednesday led authorities to expand the danger zone to 8km from the crater. People were urged to stay clear from an area along the Kobokan River, which is the route of the molten rock stream, as scorching gases moved down Semeru’s slopes.
Footage on social media showed a dense cloud of ash moving through a forested valley to a river beneath a bridge. Locals, some with faces covered with volcanic dust and water, escaped to makeshift refuges or left for alternative secure locations.
Local media reported that emergency teams were struggling to rescue about 178 individuals stranded on the 3,676-metre peak at the Ranu Kumbolo observation station. The group included 137 hikers, 15 carriers, seven escorts and six tourism officials, according to an official with the protected area.
“They are currently safe at Ranu Kumbolo monitoring post,” a spokesperson stated in a video statement. He said the station was situated 4.5km from the summit on the northern slope of the mountain, which is outside the trajectory of the hot cloud flow that was seen traveling to the south-southeast. Inclement conditions and rain forced the group to spend the night there, he added.
The volcano, also called Great Mountain, has erupted numerous times in the past 200 years. However, as is the situation with many of the 129 live volcanoes in the archipelago, thousands of residents still to live on its fertile slopes.
The mountain's previous significant explosion was in late 2021, when 51 individuals were lost their lives and hundreds others were injured and villages were submerged in thick mud. The event forced the relocation of over ten thousand residents from their houses.
Indonesia, an archipelago of more than 280 million inhabitants, sits along the Pacific seismic belt, a curved series of fault lines, and is prone to seismic events and volcanic activity.