Karangetang Lava Slide Hits the Wall of the North Crater-Main Crater English: Karangetang Lava Slide Hits the Wall of the North Crater-Main Crater

Karangetang Mountain on Siau Island, Sitaro Islands Regency, North Sulawesi, is in a state of alert. Smoke appears in both craters of the volcano. ANTARA/HO-PGA Karangetang

MANADO - The Chairman of the Karangetang Volcano Observation Post (PGA), Yudia P Tatipang, said that the lava flow from the left peak occasionally hit the crater of the two and the main crater of Mount Karangetang, on Siau Island, Sitaro Islands Regency, North Sulawesi.

"The current activity of Mount Karangetang is in the form of occasional lava flows from the left peak hitting the wall between the left and right (two craters and the main crater)," said Yudia as reported by ANTARA, Wednesday, April 1.

This condition, he said, was marked by the appearance of white smoke that extended in the area of the volcano's body.

"At the end of the lava at a distance of approximately 1,200 meters, no activity of ejection was observed," he said.

Yudia explained that the activity of Mount Karangetang this morning was observed with thick white smoke on the right peak, while thin-thick white smoke on the left peak when a moderate rumbling sound was heard.

Yudia explained that during the observation period of March 31, 2026, five earthquakes with an amplitude of 5-7 millimeters, duration of 48-105 seconds, as many as 103 aftershocks with an amplitude of 2-50 millimeters for 13-43 seconds were recorded.

The PGA post also recorded 15 times of non-harmonic tremor earthquakes with an amplitude of 3-15 millimeters, a duration of 42-114 seconds, one hybrid/multiple phase earthquake with an amplitude of 10 millimeters, S-P: 0 seconds, duration: 28 seconds.

Six shallow volcanic earthquakes with amplitudes of 3-10 millimeters lasting 6-10 seconds, one local tectonic earthquake with an amplitude of 20 mm, S-P: 9 seconds, lasting 42 seconds, one earthquake felt with an amplitude of 50 millimeters, S-P: 20 seconds, lasting 221 seconds, scale: I MMI and four distant tectonic earthquakes, amplitudes of 7-50 millimeters, S-P: 13-36 seconds, duration: 38-201 seconds.

"The level of activity of Mount Karangetang is Level II (Alert)," he said.

He hopes that residents will comply with the recommendations issued by the Center for Volcanology and Geological Hazard Mitigation (PVMBG) to avoid unwanted things.