A moderately explosive eruption at Kanlaon Volcano occurred on April 8, 2025, lasting 56 minutes, producing a 4,000-meter high ash plume that drifted west and southwest.
Audible rumbling was reported in nearby areas, and pyroclastic density currents (PDCs) were observed descending the southern slopes within a kilometer of the crater.
Ballistic fragments caused vegetation fires near the summit, while thin ashfall and sulfurous fumes affected several barangays in Negros Occidental and Oriental.
Prior to the eruption, short-term inflation and a decline in sulfur dioxide (SO2) emissions were noted, indicating pressurization and gas blockage in the volcanic system.
No significant changes in volcanic earthquake occurrences followed the event, maintaining Alert Level 3 for magmatic unrest at Kanlaon.
Communities within a 6-km radius are advised to stay evacuated, and local authorities must prepare for possible further escalation.
Lahars and sediment-laden flows are a potential hazard due to loose volcanic material on the slopes.
Civil aviation authorities have been warned of ash hazards for aircraft, and PHIVOLCS continues to monitor the volcano closely.
