Bali Tourists Must Pay Attention To Volcanic Activity In Indonesia As More Eruptions Recorded

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Tourists traveling to Bali or across Indonesia are advised to closely monitor volcanic activity in the country.

Volcanic activity across Indonesia is increasing, especially on the islands neighbouring Bali, and eruptions have been impacting flights. 

Volcanic activity from Indonesia’s Mount Lewotobi Laki Laki has been increasing over the last 10 months. On June 17th, the volcano in Flores erupted, releasing an ash cloud 11km into the air.

The eruption triggered the authorities to put Mount Lewotobi Laki Laki back on the highest level of alert, and the eruption caused major delays and travel disruptions at Bali’s I Gusti Ngurah Rai International Airport. 

On Monday, 7th July 2025, Mount Lewotobi Laki erupted once again. Indonesia’s MAGMA Agency confirmed that the volcano spewed a mixed cloud of ash, lava, and gas 19km into the air, creating an avalanche and lava flow for 5km down the volcano.

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Monday’s eruption impacts at least three flights to I Gusti Ngurah Rai International Airport. A Virgin Australia spokesperson told reporters, “Some Virgin Australia Bali services have been cancelled following the eruption of Mount Lewotobi earlier today.”

Adding “The safety of our guests and crew is our highest priority, and our team of expert meteorologists is closely monitoring the situation and ash cloud activity…We regret the impact of this on guests’ travel plans and encourage guests travelling to or from Bali to closely monitor their flight status via the Virgin Australia website or app.”

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A spokesperson from Qantas told reporters, “Our meteorologists and operations teams are closely monitoring the movement of volcanic ash from the latest eruption of Mount Lewotobi in Indonesia.” Adding “Safety is always our top priority, and we will contact customers directly if their flight is disrupted.”

It is not only Mount Lewotobi Laki Laki in the Flores Islands that is experiencing heightened activity, but also Mount Ruang in East Java. On Monday, 7th July, the volcano, which is located at the border of Jember Regency between Bondowoso and Banyuwangi in East Java, spewed an ash cloud 1000m above its peak. 

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The Mount Raung Observation Post Officer, Burhan Alethea, confirmed, “There was an eruption of Mount Raung with the height of the eruption column observed at around 1,000 meters above the peak or 4,332 meters above sea level (masl).” Mount Raung erupted again at 3.21 am local time. Alethea added,  “The height of the eruption column was observed to be around 800 meters above the peak or 4,132 meters above sea level.”

He urged, “The public and visitors or tourists are not allowed to approach the eruption center in the peak crater within a radius of three kilometers, descend the caldera, and spend the night in the crater area.”

Data from Mount Raung Observation Post in Songgon, Banyuwangi, recorded that since January to July 2, 2025, there have been 43 eruptions. The height of the eruption column varies between 400 to 2,000 meters above the peak. In a media statement issued last week, the Mount Raung Observation Post Officer, Agung Tri Subeki, shared, “During June 2025, Mount Raung erupted almost every day.” 

Speaking separately, the Head of the Geological Agency of the Ministry of Energy and Mineral Resources (ESDM), Muhammad Wafid, previously confirmed that the latest evaluation showed that Mount Raung remains on alert despite the continuous eruption activity, adding, “The status of Mount Raung is still Level II.”

On Friday, 4th July, Mount Seramu, which sits at the border of Lumajang and Malang Regency in East Java, also saw a significant eruption. Visibility of the eruptions was obscured by dense fog. Seismic activity was also recorded from Mount Seramu in the three days prior.

Mount Semeru Observation Post Officer, Ghufron Alwi, reported that the first eruption on Friday, 4th July, occurred at 04.47 local time with a maximum amplitude of 22 mm and a duration of 124 seconds.

He added, “Mount Semeru erupted again at 08.50 Western Indonesia Time, and the height of the eruption column was not observed. The second eruption was also recorded with a maximum amplitude of 22 mm and a duration of 108 seconds.” Mount Seramnu reminds me of a Level II warning. A no-go zone has been put in place 3km around the centre of the peak.