Mount Semeru, located on the border of Lumajang and Malang Regencies in East Java, reportedly erupted again on Sunday (28/6). The volcanic activity spewed a column of volcanic ash approximately 1,000 meters above the summit, reaching 4,676 meters above sea level (masl).
Based on records from the Semeru Volcano Observatory (PGA), the observed ash column was of moderate intensity, ranging from white to gray in color. The ash material was observed moving with the direction of the wind around the crater. Although the eruption lasted for a relatively short duration, relevant authorities continue to ask the public not to lower their guard regarding potential follow-up threats.
The Center for Volcanology and Geological Hazard Mitigation (PVMBG) strictly urges the public not to carry out any activities in the southeastern sector, particularly along the Besuk Kobokan river basin. This area is a high-risk zone potentially subject to pyroclastic flows and cold lahar floods, especially when the summit area experiences high-intensity rainfall.
In addition to the direct threat from hot materials, exposure to volcanic ash is also a serious concern for residents living around the mountain slopes. The public is advised to wear masks as a preventive measure to protect their respiratory system from airborne volcanic dust.
As of now, Mount Semeru's activity status remains at Level II (Alert). The local government, along with the BNPB and BPBD, continues to maintain close coordination to monitor the situation's development and ensure that mitigation information is delivered accurately to the public to guarantee collective safety.
