September 6, 2026 | 11:48 am
TEMPO.CO, Jakarta - The volcanic ash from the eruption of Mount Anak Krakatau in Indonesia became a topic of public discussion on the morning of Sunday, September 6, 2026. Several regions experienced ashfall, specifically in western Java, including Jakarta and its surrounding areas. The spread of volcanic ash also reached parts of Sumatra.
According to information from the MAGMA Indonesia website (Ministry of Energy and Mineral Resources), Mount Anak Krakatau is continuing to erupt, an activity that has been ongoing since last Friday morning. Recent eruptions were recorded by seismographs at times including 05:53 and 07:10 WIB (Western Indonesian Time).
It was reported that while the eruption was not visually observed, seismographs recorded it with a maximum amplitude of 50 mm and a duration of 16 seconds for the second eruption. In a previous statement, the Geological Agency noted that continuous eruptions accompanied by "lava fountain" phenomena lasting several hours are common occurrences.
Satellite imagery released by the Australian Bureau of Meteorology last Saturday morning clearly captured the spread of volcanic ash from the Mount Anak Krakatau eruption. "The volcano spewed thick smoke into the atmosphere. On satellite imagery, the smoke column moving westward could be clearly seen," the statement read.
That same Saturday morning, the Australian Bureau of Meteorology stated that the Australian mainland was safe from the ash's impact, though flights to or through Indonesia were not.
Incandescent lava from Mount Anak Krakatau is visible from Pasauran, Serang Regency, Banten, on September 5, 2026. ANTARA/Muhammad Bagus Khoirunas
On Saturday evening, Erma Yulihastin, a researcher at BRIN's Climate and Atmosphere Research Center, revealed that the Mount Anak Krakatau eruption formed a pyrocumulus cloud that spread horizontally to the west. She cited satellite observations from the European Space Agency's Sentinel-2B.
"If an eruption can be visually observed via satellite, it indicates a very significant and dense eruption volume," she said in information shared via her social media account. She authorized the use of this statement for this article.
Erma also revealed that, based on simulations, the eruption formed a tall column—estimated at 13–14 kilometers in height—reaching the altitude of the tropopause. "At certain times, when strong sea breezes and low-pressure conditions develop in Banten, pyrocumulus clouds could drift toward the Serang area of Banten and its surroundings," he said.
Read: AirNav Intensifies Jakarta Airspace Monitoring Amid Mount Anak Krakatau Ash
Click here to get the latest news updates from Tempo on Google News
How to Stay Safe from Volcanic Ash Exposure: Expert Guide
1 menit lalu
Griffith University epidemiologist Dicky Budiman outlines safety steps to protect your respiratory system, eyes, and skin from abrasive volcanic ash.
How to Remove Volcanic Ash from Vehicles Without Scratches
37 menit lalu
Learn how to safely clean abrasive volcanic ash off your vehicle and protect paint and glass from scratches with this guidance from an expert.
6 Airports Closed as Mount Anak Krakatau Eruption Hits Flights
1 jam lalu
Transportation Minister Dudy Purwagandhi announced the temporary closure of six airports due to volcanic ash from Mount Anak Krakatau.
KAI: Mount Anak Krakatau Eruption Has No Impact on Bandung Train Operations
1 jam lalu
KAI says Bandung train operations remain normal despite Mount Anak Krakatau's eruption, while safety teams monitor the volcano & travel conditions.
Jakarta Warns Residents Against Unverified Reports on Mount Anak Krakatau Ash
1 jam lalu
Anak Krakatau ash reaches Jakarta as officials urge residents to stay alert, wear masks and limit outdoor activities while following official updates.
Mount Anak Krakatau Ash Forces Cancellation of 209 Soekarno-Hatta Flights
1 jam lalu
Mount Anak Krakatau eruption cancels 209 flights at Soekarno-Hatta, with 160 domestic, 39 international and 10 cargo flights affected.
Mount Anak Krakatau Ash Poses Health Risks, Epidemiologist Warns
1 jam lalu
Volcanic ash from Mount Anak Krakatau contains sharp silica that can irritate eyes & lungs, an epidemiologist warns as ash spreads across Indonesia.
Jakarta Tightens Air Quality Monitoring as Mount Anak Krakatau Ash Spreads
1 jam lalu
Jakarta tightens air quality monitoring as Mount Anak Krakatau ash spreads, urging residents to limit outdoor activities and wear N95 masks.
Mount Anak Krakatau Ash Disrupts Flights Across Jakarta, Makassar and Lombok
2 jam lalu
Mount Anak Krakatau's eruption disrupts flights in Jakarta, Makassar and Lombok, with cancellations and delays as volcanic ash spreads.
Mount Anak Krakatau Ash Dispersion Depends on Wind, Geological Agency Says
2 jam lalu
The Geological Agency says Mount Anak Krakatau ash could shift direction as wind conditions change at different atmospheric altitudes.
