According to the BBC, Indonesian authorities reported that on the morning of September 6, volcanic ash from Mount Krakatau was detected in the airspace near Jakarta's Soekarno-Hatta International Airport. As a result, 209 flights were suspended. Jakarta's Soekarno-Hatta International Airport announced a suspension of flights and landings on September 6.
The volcano began erupting late at night on the 4th, causing continuous seismic activity and ejecting lava columns. There were continuous rumbling sounds in the surrounding areas. Officials reported that there were two more eruptions in the early hours of the 6th.
The flight cancellation has affected more than 22,000 people, and the suspension of service will continue until 1:30 PM local time.
The Indonesian Ministry of Transport stated that the suspension of operations mainly affected flights to and from Singapore. In addition, it also affected other international routes such as those to Doha, Sydney, and Kuala Lumpur.
The volcano is located in the Sundas Strait between Java Island and Sumatra Island. Officials confirmed that this volcanic activity did not trigger a tsunami warning.
The health department urges residents in affected areas to stay at home and wear masks to protect themselves from the health risks posed by volcanic ash to the respiratory tract, eyes, and skin.
"Son of Kala-Ka-Too", as the name suggests, is the "descendant" of Kala-Ka-Too Volcano. After a major eruption in 1883, Kala-Ka-Too volcano formed a crater on its surface. In the early 20th century, the new volcano erupted from the seafloor of the crater and began intermittent eruptions thereafter.
This volcano collapsed in December 2018, causing a huge tsunami that displaced thousands of people along the coast near Sumatra and Java, and left many injured.
Scientists have found that the rock masses that slide off during volcanic collapses are of considerable size.
According to the Indonesian Volcanic Geology and Disaster Reduction Center, at 6:11 local time on September 6, an eruption occurred at Ilir Lewotolo volcano in East Nusa Tenggara province of Indonesia. The ash column reached a height of about 400 meters, and the eruption lasted for approximately 40 seconds.
At 7:51 local time on September 6th, the Sememulu volcano in East Java Province, Indonesia erupted. The ash column reached a height of about 1000 meters, and the eruption lasted for approximately 102 seconds.
Indonesia is located in the Circum-Pacific Volcanic and Seismic Belt. This region surrounds almost the entire Pacific coast, with frequent earthquakes and volcanic eruptions. Therefore, volcanic and seismic activities in Indonesia are very active.
According to information from the Chinese Consulate General in Surabaya on September 6, recently, a forest and mountain fire has occurred at the Ijen Volcano Reserve in East Java, Indonesia. The fire has spread to the core hiking route of the volcano, and the situation remains dangerous due to the ongoing fire.
According to an official notice from the Natural Resources Protection Agency of Eastern Java (BBKSDA), starting from September 4, 2026, the Ijen volcanic area, hiking trails, and all tourism activities have been temporarily closed. The date of reopening will be announced later.
To effectively protect the personal safety of Chinese citizens in the consulate area, the Chinese Consulate General in Surabaya hereby issues this urgent reminder:
1. Immediately suspend the journey
All Chinese tourists, mountaineering enthusiasts, and travelers planning to visit the Yizhen Volcano scenic area in the Wan Nan Meng and Bong Dovo So regions are advised to cancel their trips and not to go there. During the fire situation, there are multiple safety hazards in the area, including the spread of forest fires, suffocation from thick smoke, closed roads, and blocked rescue efforts.
II. Adjust the itinerary in a timely manner
Citizens who have booked tours of Yizhen Volcano, mountain climbing trips, ground transportation, and accommodation arrangements are requested to contact their travel agencies, booking platforms, or hotels as soon as possible to cancel their reservations, change the dates, or re-book their tickets. This will help avoid delays and unnecessary losses.
III. Strictly comply with local regulations
The current scenic area is completely closed. It is strictly prohibited to take unauthorized shortcuts, enter the mountains without permission, or walk at night. Please pay close attention to the release of information regarding the reopening by local fire and disaster management departments, as well as the official announcements from the scenic area. Plan your travel only after the official reopening.
According to the Indonesia National News Agency, the Government of Banu Wangi District in East Java has declared a 14-day emergency status due to a forest fire that occurred at the Ijen Volcano Natural Tourist Park. The government has requested support from firefighting helicopters from the Disaster Reduction Agency of East Java and the Surabaya Search and Rescue Office.
According to Paltana, the Disaster Mitigation Agency of East Java Province, the fire-fighting helicopter is scheduled to arrive at Ijen crater on September 6.
"The joint efforts of the Disaster Relief Headquarters in East Java Province and the Aerial Firefighting Team coordinated, with the helicopter departing from Mangar and landing at Ba'nui Wani Airport, before heading towards the Palu region for aerial firefighting operations."
The 14-day emergency state period is from September 4 to September 17, 2026. It may be extended depending on the fire situation and emergency response needs.
The fire was first detected in the woodlands and plantations of Patervallen in Kalipro Township on Wednesday, September 2nd. Local authorities immediately began a phased approach to dealing with the situation. On Friday, September 4th, the fire spread towards the Pondo Kebonded trail leading to Ijen Crater, resulting in the temporary closure of the tourist park.
