Mount Anak Krakatau Eruptions Intensify, Alert Level Raised to 'Watch'
October 10, 2026 | 12:41 am TEMPO.CO, Jakarta - Mount Anak Krakatau is again under Level III status (Watch). The volcanic activity in the Sunda Strait has increased.The...
October 10, 2026 | 12:41 am TEMPO.CO, Jakarta - Mount Anak Krakatau is again under Level III status (Watch). The volcanic activity in the Sunda Strait has increased. The Geological Agency raised the activity status of Mount Anak Krakatau again on Friday night, October 9, 2026, at 21:00 WIB (Western Indonesian Time).
This status comes less than three weeks after the Geological Agency lowered it to Level II (Caution) on September 21. The latest decision is based on observations from September 21 to October 8, which recorded five eruption earthquakes and eight explosion earthquakes. Additionally, 11 low-frequency earthquakes, 45 many-phase earthquakes, 17 continuous tremors, 31 shallow volcanic earthquakes, and 9 deep volcanic earthquakes were noted.
"Throughout Friday, October 9, 2026, until 19:20, there were nine eruptions with a maximum amplitude of 55 millimeters and an eruption duration of 32 seconds with the height of the eruption column unobserved," said the Head of the Geological Agency, Lana Saria, in a written statement.
With the status returning to Level III, it is again prohibited to approach Mount Anak Krakatau within a five-kilometer radius of the eruption main crater. Neither the public nor visitors are allowed to enter or conduct activities within a one-kilometer radius of the new island in the northwestern or southeastern sectors.
The Geological Agency also called for increased vigilance against lava bomb projectiles, heavy ash rains, lava flows, and the potential for secondary eruptions caused by the heat contact of lava with both seawater and rainwater within a five-kilometer radius of the Anak Krakatau eruption center.
"The community in the coastal areas of Banten and Lampung provinces is urged to remain calm and not to trust rumors about an eruption of Mount Anak Krakatau that could lead to a tsunami, and they can carry out normal activities while always following the guidance of local disaster management agencies," said Lana in a further statement.
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The Level III status of Mount Anak Krakatau was previously from July 2 to September 21. There were continuous eruptions from September 4 to 6. The volcanic ash from the eruptions spread to Greater Jakarta and West Sumatra.
In addition to expanding the land area of Mount Anak Krakatau, it also created two new land areas. Read: Mount Anak Krakatau Erupts, Public Urged to Stay 2 km Away Click here to get the latest news updates from Tempo on Google News Recommended Mount Anak Krakatau Erupts, Public Urged to Stay 2 km Away 6 jam lalu Mount Anak Krakatau Erupts, Public Urged to Stay 2 km Away Mount Anak Krakatau erupted on Friday afternoon, sending an ash column rising 250 meters above its peak.
Fact Check: Stranded Fish on Beach Unrelated to Anak Krakatau 7 hari lalu Fact Check: Stranded Fish on Beach Unrelated to Anak Krakatau Tempo fact-checks claims linking stranded fish in the Sunda Strait to the Anak Krakatau eruption. Verification shows the videos were taken abroad.
When Will Anak Krakatau Erupt Next? Here's What Experts Say 11 hari lalu When Will Anak Krakatau Erupt Next? Here's What Experts Say Recent models have yet to take the early September eruptions into account.
Researchers entertain chance that it prompts Anak Krakatau to grow faster. Fact Check: Were Five Missing Journalists Stranded in Seribu Islands? 13 hari lalu Fact Check: Were Five Missing Journalists Stranded in Seribu Islands?
Fact check - The circulating photo was AI-manipulated. From eight of those missing near Mount Anak Krakatau, only one has been found. What Experts Know About New Land Seen Around Anak Krakatau 14 hari lalu What Experts Know About New Land Seen Around Anak Krakatau Images of new land formations around Anak Krakatau have drawn attention online following a series of eruptions earlier this month.
Two New Islands Form Near Anak Krakatau After Eruptions 15 hari lalu Two New Islands Form Near Anak Krakatau After Eruptions Two new islands northwest and southeast of Mount Anak Krakatau in the Sunda Strait have been detected following a series of continuous eruptions. Missing Journalists Search Urged to Resume After Crew Member Identified 16 hari lalu Missing Journalists Search Urged to Resume After Crew Member Identified PFI urges authorities to resume the search for 5 journalists and 2 crew members after a missing boat crew member was found dead on Enggano Island.
Mount Anak Krakatau Returns to Alert Level II 17 hari lalu Mount Anak Krakatau Returns to Alert Level II A ban on approaching the center of activity at Mount Anak Krakatau remains in effect. The danger radius is set at two kilometers. End of Search for Missing Journalists in Sunda Strait: What to Know 21 hari lalu End of Search for Missing Journalists in Sunda Strait: What to Know Authorities ended the 10-day search for eight people, including five journalists, after finding no confirmed signs of the missing boat.
Mount Anak Krakatau Growth Rapid but Safe, Says PVMBG 22 hari lalu Mount Anak Krakatau Growth Rapid but Safe, Says PVMBG PVMBG confirms Mount Anak Krakatau is growing rapidly in the Sunda Strait, but assures it remains within safe parameters.
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