--- title: "Anak Krakatau volcano erupts, spewing ash and causing booms" publication: "MediaBias News" url: "https://mediabias.news/tech/anak-krakatau-volcano-erupts-spewing-ash-and-causing-booms" api: "https://mediabias.news/api/v1/stories/anak-krakatau-volcano-erupts-spewing-ash-and-causing-booms" markdown: "https://mediabias.news/tech/anak-krakatau-volcano-erupts-spewing-ash-and-causing-booms.md" audio: "https://mediabias.news/api/audio/anak-krakatau-volcano-erupts-spewing-ash-and-causing-booms" category: "Science & Tech" area: "Asia-Pacific" published: "2026-09-05T09:45:44.358Z" source_reported: "2026-09-05T08:27:07.000Z" updated: "2026-09-05T09:45:44.358Z" trust_score: 74 critic_score: 46 hype_score: 15 assessment_type: "coverage-and-source-reporting-analysis" fact_check_status: "not-performed" coverage_measured: "2026-09-05T09:45:11.800192+00:00" --- # Anak Krakatau volcano erupts, spewing ash and causing booms *Indonesian authorities issue alert level III and prohibit access within a 3km radius of the volcano.* **Scores for the source reporting** (0-100, assessing the original journalism this article was written from, not this write-up): - Trust 74 of 100, higher is better. Multiple independent outlets, official report cited, specific dates, locations and figures raise trust to 74. - Craft 46 of 100, higher is better. Clear facts, specific data but no quotes or analysis, and many press‑release style digests lower craft to 46. - Hype 15 of 100, lower is better. Headlines are factual; no sensational language, yielding a low hype score of 15. Scored by MediaBias News; method at https://mediabias.news/methodology. **The short version** - The Anak Krakatau volcano erupted on September 4-5, 2026, producing an explosive event observed by satellite. - An ash column reached approximately 14km to 15km high, though one report stated 400m. - Loud booms were heard up to 150km away, and Indonesian authorities issued an Alert Level III, banning access within a 3km radius. - Reports vary on the number of eruptions, with some stating one, others six, and one citing at least ten. The Anak Krakatau volcano erupted explosively on September 4-5, 2026. The event was observed by the Himawari-9 satellite and generated an ash column. Indonesian authorities placed the volcano under Alert Level III and prohibited access within a 3-kilometre radius. ## Disagreement on eruption height and number Reports differ on the height of the ash column produced by the eruption. La Vanguardia and The Watchers reported it at about 14km and 15km respectively, while NHK World stated 400m. The number of eruptions also varies, with La Vanguardia mentioning a single strong eruption, tempo reporting six, and liputan6 citing at least ten. ## What the coverage left out None of the left-rated digests mention the report by the Geological Agency stating there is no potential for a collapse large enough to trigger a tsunami, which was included in a right-rated digest. ## Who covered it Shares of the 10 covering outlets with a published leaning rating: - Left: 20% (2) - Centre: 20% (2) - Right: 60% (6) 22 of 32 covering outlets carried no usable leaning rating and were excluded from those percentages. Coverage measured 2026-09-05T09:45:11.800192+00:00. **Coverage watch:** developing. Checked 1 time; 0 checks found a material change. Most recently checked 2026-09-05T10:00:18.775Z. ## How the sides framed it ### Left - Both left-rated reports highlighted the explosive nature of the eruption and the resulting ash column. La Vanguardia reported the ash column reached about 14km and that the noise could be heard up to 150km away. It also noted the alert level and a 5km exclusion zone, though other reports mention 3km. Tempo reported six eruptions and lava fountains. ### Centre - Centre-rated reports focused on the eruption event and the alert status. El Periódico mentioned the volcano's history of causing a tsunami in 2018 and noted the alert level and a 3km radius prohibition. Bne IntelliNews stated the eruption spanned from late Friday into early Saturday. ### Right - Right-rated reports led on the eruption and its immediate effects, with several mentioning the sounds heard and the ash. Anadolu Ajansı stated there was no potential for a tsunami-triggering collapse. Free Malaysia Today News reported booming and rumbling sounds and lava-fountaining activity. NHK World and Thairath reported Japan checking for tsunami threats. Liputan6 cited at least ten eruptions, and Tribunnews noted that windows vibrated in Bandung due to loud bangs. ## Factuality profile of the covering outlets These are published factuality ratings of the outlets, not a verdict on whether this story or its claims are true. - mixed: 4 - high: 6 - unknown: 21 - veryHigh: 1 ## Verification scope This page compares coverage and scores the source reporting. It is not a ClaimReview verdict on whether the underlying event or claim is true. ## Original reporting this was written from - [La Vanguardia](https://lavanguardia.com/vida/20260905/11627866/krakatoa-registra-gran-erupcion-estruendo-escuchar-150-km.html) — The Krakatoa Records a Great Eruption and the Noise Can Be Heard at 150 Km - [Anadolu Ajansı](https://aa.com.tr/en/asia-pacific/indonesias-mt-anak-krakatau-erupts-spews-rocks-volcanic-ash/4048004) — Indonesia's Mt. Anak Krakatau erupts, spews rocks, volcanic ash - [El Periódico](https://elperiodico.com/es/internacional/20260905/volcan-anak-krakatoa-erupcion-indonesia-ultima-hora-directo-133976033) — Last Hour of the Eruption of Anak Krakatoa Volcano, Live - [law-justice.co](https://law-justice.co/artikel/209975/dentuman-bandung-dikaitkan-anak-krakatau-ini-respon-ahli-itb) — Bandung's Explosion Linked to Anak Krakatau, ITB Experts Respond - [Kosmo Online](https://kosmo.com.my/2026/09/05/anak-krakatau-meletus-penduduk-bimbang-tsunami) — Anak Krakatau Meletus, Penduduk Bimbang Tsunami - [kaohoon.com](https://kaohoon.com/news/860701) — Indonesia Issues a Level 3 Alert as the Anak Krakatau Volcano Erupts, Prohibiting Access Within a 3 Km Radius. - [asriran.com](https://asriran.com/fa/news/1189342/%D9%81%D9%88%D8%B1%D8%A7%D9%86-%D8%B4%D8%AF%DB%8C%D8%AF-%D8%A2%D8%AA%D8%B4%D9%81%D8%B4%D8%A7%D9%86-%D8%A2%D9%86%D8%A7%DA%A9-%DA%A9%D8%B1%D8%A7%DA%A9%D8%A7%D8%AA%D9%88%D8%A2-%D8%AF%D8%B1-%D8%A7%D9%86%D8%AF%D9%88%D9%86%D8%B2%DB%8C) — Severe Eruption of Anak Krakatoa Volcano in Indonesia - [Malay News- Malaysian newspapers from Kuala Lumpur](https://malay.news/anak-krakatau-terus-meletus-sinabung-kekal-status-siaga) — Anak Krakatau Continues to Erupt, Sinabung Remains on Alert Status - [suarasurabaya.net](https://suarasurabaya.net/kelanakota/2026/anak-krakatau-terus-erupsi-sejak-jumat-lava-fountain-terpantau-di-malam-hari) — Anak Krakatau Has Been Erupting Continuously Since Friday, Lava Fountains Observed at Night - [Free Malaysia Today News](https://freemalaysiatoday.com/category/world/2026/09/05/indonesia-s-anak-krakatau-continues-to-erupt) — Indonesia’s Anak Krakatau continues to erupt - [IDN Times](https://idntimes.com/news/indonesia/bmkg-dentuman-bandung-fenomena-skyquake-penyebabnya-masih-misterius-00-sbfjr-m9rjlm) — BMKG: Bandung Earthquake Was a Skyquake, Cause Remains a Mystery - [wartaekonomi.co.id](https://wartaekonomi.co.id/read632721/profesor-brin-ingatkan-mimpi-buruk-krakatau-1883-soroti-erupsi-anak-krakatau) — BRIN Professor Recalls Krakatoa's 1883 Nightmare, Highlights Anak Krakatau Eruption - [Pantau.com](https://pantau.com/nasional/364461/gunung-anak-krakatau-erupsi-terus-bnpb-meminta-warga-banten-dan-lampung-tidak-panik) — Mount Anak Krakatau Continues to Erupt, BNPB Urges Residents of Banten and Lampung Not to Panic - [Harianjogja.com](https://news.harianjogja.com/r-1270057/gunung-anak-krakatau-erupsi-beruntun-lava-dan-dentuman-terdengar) — Anak Krakatau Erupts in Series, Lava and Booms Heard - [tempo.co](https://en.tempo.co/read/2118996/mount-anak-krakatau-erupts-overnight-spews-lava-fountains) — Mount Anak Krakatau Erupts Overnight, Spews Lava Fountains - [bne IntelliNews](https://intellinews.com/anak-krakatau-erupts-in-indonesia-465852) — Anak Krakatau erupts in Indonesia - [Tribunnews.com](https://tribunnews.com/nasional/7878246/dentuman-gunung-anak-krakatau-bikin-jendela-warga-di-bandung-bergetar-dikira-ban-truk-meletus) — The Rumbling of Mount Anak Krakatau Caused Windows in Bandung to Vibrate, as Residents Thought It Was a Truck Tire Burst. - [Potosinoticias.com](https://potosinoticias.com/2026/09/04/video-entra-en-erupcion-el-volcan-anak-krakatau-y-activa-la-alerta-en-indonesia) — Anak Krakatau Volcano Erupts and Triggers Alert in Indonesia - [https://www.idxchannel.com/](https://idxchannel.com/news/gunung-anak-krakatau-erupsi-disertai-dentuman-ini-kata-bnpb) — Anak Krakatau Erupts, Sounds Boom, Says BNPB - [antaranews.com](https://antaranews.com/berita/5727095/bnpb-minta-masyarakat-jangan-panik-respons-erupsi-gunung-anak-krakatau) — BNPB Asks the Public Not to Panic in Response to the Eruption of Mount Anak Krakatau. - [Republika Online](https://news.republika.co.id/berita/tkvd01393/warga-bandung-dihebohkan-dentuman-misterius-malam-hari) — Bandung Residents Shocked by Mysterious Nighttime Booms - [fajar.co.id](https://fajar.co.id/2026/09/05/gunung-anak-krakatau-kembali-erupsi-warga-diminta-tak-mendekat-radius-3-km) — Mount Anak Krakatau Erupts Again, Residents Urged to Stay Within a 3-Km Radius - [viva.co.id](https://viva.co.id/berita/nasional/1926416-gunung-anak-krakatau-erupsi-warga-diimbau-jauhi-radius-3-km) — Mount Anak Krakatau Erupts, Residents Urged to Stay Away From a 3-Km Radius - [medcom.id](https://medcom.id/nasional/peristiwa/Gbm0mnyN-erupsi-gunung-anak-krakatau-disertai-dentuman-radius-3-km-dilarang-didekati) — Anak Krakatau Erupts, Sounds Prohibited From Approaching Within a 3-Km Radius - [NHK World](https://www3.nhk.or.jp/nhkworld/en/news/20260905_200) — Japan checking for tsunami threat after volcano erupts in Indonesia - [SINDOnews.com](https://daerah.sindonews.com/read/1746507/174/gunung-anak-krakatau-erupsi-tengah-malam-tadi-ini-penampakannya-1788563360) — Anak Krakatau Erupted in the Middle of the Night, Here's What It Looked Like - [thairath.co.th](https://thairath.co.th/news/foreign/2957570) — Japan Is on Alert for a Tsunami After an Indonesian Volcano Erupted; No Significant Changes in Sea Level Have Been Observed Yet. - [Gelora News](https://gelora.co/2026/09/gunung-anak-krakatau-erupsi-hebat.html) — Anak Krakatau Erupts Massively, Booms Heard in Several Areas - [liputan6.com](https://liputan6.com/news/read/8285134/anak-krakatau-erupsi-beruntun) — Anak Krakatau Erupts in Series - [Telegraf – Najnovije vesti](https://telegraf.rs/vesti/svet/4390745-eruptirao-jedan-od-najopasnijih-vulkana-na-svetu-dete-krakataua-krenulo-stopama-svog-smrtonosnog-pretka) — One of the Most Dangerous Volcanoes in the World Has Erupted: the "Child of Krakatau" Followed in the Footsteps of His Deadly "Ancestor" - [The Watchers - Daily news service | Watchers.NEWS](https://watchers.news/2026/09/04/high-level-eruption-at-anak-krakatau-ejects-ash-over-15-km-50-000-feet-a-s-l-indonesia) — High-level eruption at Anak Krakatau ejects ash over 15 km (50 000 feet) a.s.l., Indonesia - [fararu.com](https://fararu.com/fa/news/999559/%D9%88%DB%8C%D8%AF%DB%8C%D9%88-%D9%81%D9%88%D8%B1%D8%A7%D9%86-%D8%A2%D8%AA%D8%B4-%D9%81%D8%B4%D8%A7%D9%86-%D8%AF%D8%B1-%D8%A7%D9%86%D8%AF%D9%88%D9%86%D8%B2%DB%8C) — Volcano Erupts in Indonesia ## Questions **When did the Anak Krakatau volcano erupt?** The Anak Krakatau volcano erupted explosively on September 4-5, 2026. The event was observed by the Himawari-9 satellite and generated an ash column. **How high was the ash column from the eruption?** Reports differ on the height of the ash column. La Vanguardia and The Watchers reported it at about 14km and 15km respectively, while NHK World stated 400m. **What measures did Indonesian authorities take?** Indonesian authorities placed the volcano under Alert Level III and prohibited access within a 3-kilometre radius around the crater. They also urged residents and tourists to stay away. **Were there any reports of tsunamis?** While some reports mentioned Japan checking for tsunami threats, the Geological Agency stated there was no potential for a collapse large enough to trigger a tsunami. No actual tsunami was reported. --- MediaBias News — https://mediabias.news. Reproduced from https://mediabias.news/tech/anak-krakatau-volcano-erupts-spewing-ash-and-causing-booms. Please cite as: MediaBias News, "Anak Krakatau volcano erupts, spewing ash and causing booms", https://mediabias.news/tech/anak-krakatau-volcano-erupts-spewing-ash-and-causing-booms