Indonesia Blindsided by a Devastating Volcano-Tsunami

The tsunami slammed into the Sunda Strait with no warning.
Sunday 23 December 2018
A plume is seen in the distance as debris is left on the road after the eruption of Anak Krakatoa in Sunda Strait, Indonesia. Photo: Ronald/AFP

A tsunami following a volcanic eruption killed at least 168 people when it slammed without warning into popular beaches around Indonesia’s Sunda Strait on Saturday night, cutting a swathe of destruction and triggering mass panic as it swept inland. Initial numbers placed the death toll at 62.

Hundreds of buildings were destroyed by the wave, which hit the coast of southern Sumatra and the western tip of Java about 9.30 pm following the eruption of a volcano known as Anak Krakatoa, the “child” of the legendary Krakatoa, national disaster agency spokesman Sutopo Purwo Nugroho said.

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*Update Dampak Tsunami Selat Sunda: 43 Meninggal Dunia, 584 Orang Luka-Luka dan 2 Orang Hilang* Dampak tsunami yang menerjang pantai di Selat Sunda, khususya di daerah Pandenglang, Lampung Selatan dan Serang terus bertambah. Hingga 23/12/2018 pukul 07.00 WIB, data sementara jumlah korban dari bencana tsunami di Selat Sunda tercatat 43 orang meninggal dunia, 584 orang luka-luka dan 2 orang hilang. Kerugian fisik meliputi 430 unit rumah rusak berat, 9 hotel rusak berat, 10 kapal rusak berat dan puluhan rusak. Jumlah pengungsi masih dalam pendataan. Pandeglang adalah daerah yang paling parah terdampak tsunami. Di Kabupaten Pandeglang tercatat 33 orang meninggal dunia, 491 orang luka-luka, 400 unit rumah rusak berat, 9 hotel rusak berat, dan 10 kapal rusak berat. Daerah yang terdampak adalah permukiman dan kawasan wisata di sepanjang Pantai seperti Pantai Tanjung Lesung, Sumur, Teluk Lada, Penimbang dan Carita. Saat kejadian banyak wisatawan berkunjung di pantai sepanjang Pandeglang. Di Lampung Selatan, 7 orang meninggal dunia, 89 orang luka-luka dan 30 unit rumah rusak berat. Sedangkan di Serang tercatat 3 orang meninggal dunia, 4 orang luka-luka dan 2 orang hilang. Pendataan masih dilakukan. Kemungkinan data korban dan kerusakan akan bertambah. Penanganan darurat terus dilalukan. Status tanggap darurat dan struktur organisasi tanggap darurat, pendirian posko, dapur umum dan lainnya masih disiapkan. Alat berat juga dikerahkan untuk membantu evakuasi dan perbaikan darurat. Masyarakat dihimbau tidak melakukan aktivitas di sekitar pantai saat ini. BMKG dan Badan Geologi masih melakukan kajian untuk memastikan penyebab tsunami dan kemungkinan susulannya. Sutopo Purwo Nugroho Kepala Pusat Data Informasi dan Humas BNPB

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Search and rescue teams were scouring rubble for survivors, with 168 confirmed dead, 745 people injured and 30 reported missing across three regions, he said. It has only been around two months since Indonesia’s last seismic catastrophe and the second time a tsunami has hit around the Christmas holidays.

Dramatic video posted on social media showed a wall of water suddenly crashing into an open-air concert by pop group ‘Seventeen’ hurling band members off the stage and then flooding into the audience. In a tearful Instagram post, frontman Riefian Fajarsyah said the band’s bassist and road manager had been killed.

Images of the aftermath of the tsunami in coastal areas show a trail of uprooted trees and debris strewn across beaches. A tangled mess of corrugated steel roofing, timber and rubble was dragged inland at Carita beach, a popular day-tripping spot on the west coast of Java.

Muhammad Bintang, who was at Carita beach when the wave hit, described a sudden surge of water that plunged the tourist spot into darkness. “We arrived at 9pm for our holiday and suddenly the water came it went dark, the electricity is off,” the 15-year-old told AFP. “It’s messy outside and we still cannot access the road.”

In Lampung province, on the other side of the strait, Lutfi Al Rasyid said he fled the beach in Kalianda city in fear for his life. “I could not start my motorbike so I left it and I ran… I just prayed and ran as far as I could,” the 23-year-old told AFP.

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Officials look through the wreckage in Carita after the area was hit by a tsunami on December 22 following an eruption of the volcano Anak Krakatoa. Photo: Ronald/AFP

Initial error
Authorities say the tsunami may have been triggered by an abnormal tidal surge due to a new moon and an underwater landslide following the eruption of Anak Krakatoa, which forms a small island in the Sunda Strait between Java and Sumatra. “The combination caused a sudden tsunami that hit the coast,” Nugroho said, but added that Indonesia’s geological agency was working to ascertain exactly how it happened. He added that the death toll would likely increase.

Indonesian authorities initially claimed the wave was not a tsunami, but instead a tidal surge and urged the public not to panic. Nugroho later apologised for the mistake on Twitter, saying because there was no earthquake it had been difficult to ascertain the cause of the incident early on. “If there is an initial error we’re sorry,” he wrote.

The wave swamped parts of the coast around the Sunda Strait, but was most damaging in Pandeglang district, on Java’s western tip, where at least 33 people died and 491 people were injured. Three people died further north in Serang, while seven were killed in South Lampung, on Sumatra island.

Heavy equipment was being transported to badly-hit areas to help search for victims, Nugroho said, adding evacuation posts and public kitchens were being set up for evacuees. Abu Salim, a member of the Tagana disaster volunteer group, said he helped evacuate victims in Banten province. “We evacuated the victims who died and were injured, we took them to health clinics … Most of them suffered from broken bones,” he said, adding he feared more were missing.

Although relatively rare, submarine volcanic eruptions can cause tsunamis due to the sudden displacement of water or slope failure, according to the International Tsunami Information Centre. Anak Krakatoa is a small volcanic island that emerged from the ocean half a century after Krakatoa’s deadly 1883 eruption which killed more than 36,000 people.

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Anak Krakatoa spewing lava and ash in July 2018. Photo: Ferdi Awed/AFP

According to Indonesia’s geological agency, Anak Krakatoa had been showing signs of heightened activity for days, spewing plumes of ash thousands of metres into the air. The volcano erupted again just after 9:00 pm on Saturday, the agency said. An eruption just before 4:00 pm on Saturday lasted around 13 minutes and sent plumes of ash soaring hundreds of metres into the sky.

Indonesia, one of the most disaster-prone nations on earth, straddles the so-called Pacific ‘Ring of Fire‘, where tectonic plates collide and a large portion of the world’s volcanic eruptions and earthquakes occur. Anak Krakatoa is one of 127 active volcanoes which run the length of the archipelago.

Source: AFP, CNN International

Related: This is Why There Are So Many Earthquakes in Indonesia