The volcano in Indonesia has started erupting, triggering huge travel warnings.
11:01, Wed, Nov 19, 2025 Updated: 11:01, Wed, Nov 19, 2025
Mount Semeru in Indonesia has started to erupt (Image: Getty)
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Mount Semeru's eruption in Indonesia has triggered major flight warnings, with ash from the volcano rising to as high as 54,000ft. Dramatic images show plumes of of thick grey ash billowing high into the sky.
The Australia Volcanic Ash Advisory has issued a red aviation warning with the public prohibited from engaging in activities within 500 meters of the riverbank along Besuk Kobokan.
It is believed to have erupted three times with the first occuring at 4.10 am (WIT). The eruption was recorded on a seismograph with a maximum amplitude of 22 millimeters and a duration of 142 seconds.
The first eruption occured at 4:10am (WIB), with an observed plume height of approximately 500 meters above the summit, or 4,176 meters above sea level.
The second eruption occured just an hour later at 5:09am with an observed plume height of approximately 600 meters above the summit.
At 6:05am Mount Semeru erupted for a third time with an observed eruption column height of approximately 600 meters above the summit, or 4,276 meters above sea level.
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