A weak ash emission was recorded at the summit crater of Kanlaon Volcano at 5:10 a.m. on Wednesday, Sept. 10, producing grayish plumes that rose about 600 meters above the crater, said the Philippine Institute of Volcanology and Seismology (Phivolcs).

Alert Level 2 remains in effect over Kanlaon, indicating moderate volcanic unrest.

This follows a separate ash emission event on Monday afternoon, Sept. 8, which began at 5:25 p.m. and lasted until 6:20 p.m.

Phivolcs reported that the earlier emission generated a low plume drifting west-southwest.

Despite the relatively weak activity, Phivolcs warned that Alert Level 2 means sudden explosions, increased activity, or escalation to a higher alert level remain possible.

Sulfur dioxide emissions from the volcano were measured at 1,248 tons per day on Sept. 9, further indicating ongoing volcanic gas activity.

Communities within the four-kilometer permanent danger zone are advised to remain evacuated due to the risk of sudden explosive events, pyroclastic density currents, rockfalls, and harmful volcanic gases.

Local government units are urged to maintain preparedness for possible evacuations.

Phivolcs also advised civil aviation authorities to avoid flying near the volcano's summit due to potential ash emissions that could affect aircraft safety.

In addition, the agency warned of possible lahars and sediment-laden streamflows in rivers and drainages around the volcano should heavy rainfall occur.