Anak Krakatau Erupts, Closing Jakarta's Main Airport for a Full Day
A sudden eruption of Anak Krakatau in the early hours of Sunday, September 7, 2026 sent volcanic ash drifting across western Indonesia, forcing the closure of eight airports and stranding roughly 150,000 passengers at Jakarta's Soekarno-Hatta International Airport alone. The disruption was among the most significant aviation events the region has seen in years.
What Happened and When
The volcano, which sits in the Sunda Strait between Java and Sumatra, had been showing elevated activity since Friday before erupting at 3:53 a.m. local time on Sunday for 30 seconds, then again about three hours later for 16 seconds. Closed-circuit cameras captured lava flares during the event. Indonesia's Geological Agency confirmed the details, and the Associated Press first reported them; CBC News published the account.
AirNav Indonesia subsequently closed airspace around Soekarno-Hatta and Halim Perdanakusuma airports in Jakarta, as well as six additional airports including Radin Inten II in Lampung. The closure at Soekarno-Hatta was ordered to run until 11:59 p.m. that day, affecting 467 flights. Disruptions also reached Bali's I Gusti Ngurah Rai International Airport and Medan.
The Scale of the Ash Clouds
Satellite imagery analyzed by Indonesia's volcanology agency and the Darwin Volcanic Ash Advisory Centre identified two separate ash plumes. One rose to 6,100 metres and drifted northeast over Jakarta, Banten, and West Java. A second, more powerful column reached 15,200 metres and spread over parts of Banten, Lampung, and Bengkulu provinces, as well as sections of the Indian Ocean west of Sumatra.
Lana Saria, head of Indonesia's Geological Agency, noted that activity at Anak Krakatau had been intensifying since July, with Sunday's eruption the strongest in that period. She cautioned that repeated eruptions suggest a continued supply of magma and volcanic gases beneath the volcano, though officials stated they cannot predict whether a larger eruption will follow.
No Casualties, but Ongoing Hazards
No injuries or deaths were reported, and no evacuation order was issued. Authorities did warn residents and visitors to stay at least three kilometres from the active crater; the nearest settlement is more than 16 kilometres away. The primary hazards identified include volcanic ash, high concentrations of volcanic gas, and the ejection of hot rocks near the crater.
Anak Krakatau, whose name translates as "child of Krakatau," is the successor island to the volcano whose 1883 eruption triggered a period of global cooling. A 2018 eruption of Anak Krakatau caused a tsunami that killed at least 430 people after a large section of the volcano's southwest slope collapsed into the sea.
Cascading Travel Disruptions
Indonesia's Directorate General of Civil Aviation warned that even after airspace reopened, flight schedules could face cascading disruptions affecting aircraft rotations, fleet availability, and terminal capacity. Passengers at Soekarno-Hatta described long waits with limited information from airlines, a reminder that volcanic events create communication challenges as much as logistical ones.
Why It Matters for Hosts
Independent accommodation and tour operators in Jakarta, Banten, Lampung, and Bali should treat this event as a prompt to review their force majeure and cancellation policies now, while the situation is fresh. Guests stranded by ash closures need clear, proactive communication far more than they need discounts. Operators who already have a written protocol covering natural disruptions, including who contacts guests, what alternatives are offered, and how refunds or rebooking works, will retain trust and repeat bookings even when circumstances are entirely outside their control. Given that Anak Krakatau's activity has been intensifying since July 2026, another disruption this season cannot be ruled out.
Details in this post were first reported by The Associated Press and published by CBC News on September 6, 2026.
First reported by cbc.ca.