Phivolcs records 14 volcanic tremor episodes in Taal Volcano, four volcanic quakes in Mt. Kanlaon

Published February 28, 2021, 10:47 AM

by Gabriela Baron

The Philippine Institute of Volcanology and Seismology (Phivolcs) has recorded 14 volcanic tremor episodes  in Taal Volcano and four volcanic earthquake in Mt. Kanlaon in the past 24 hours.


Based on the two separate volcano bulletins issued on Sunday, Feb. 28, both Taal Volcano and Kanlaon Volcano remain under restive state or Alert Level 1.

Taal Volcano had weak emission of white steam-laden plumes from “fumarolic” activity at the vents of its main crater, Phivolcs said. 

Temperature highs of 74.6 degrees and pH of 1.59 were last measured from the main crater lake on Feb. 18 and Feb. 12.

Phivolcs said sudden steam-driven or phreatic explosions, volcanic earthquakes, minor ashfall, and lethal accumulation or expulsions of volcanic gas can occur and threaten areas within the Taal Volcano Island (TVI).

Phivolcs recommended that entry into TVI, Taal’s Permanent Danger Zone or PDZ, especially the vicinities of the main crater and the Daang Kastilla fissure must remain strictly prohibited.

Local government units were advised to continuously assess and strengthen the preparedness of previously evacuated barangays around Taal Lake in case of renewed unrest.

Civil aviation authorities were advised against flying close to the volcano as airborne ash and ballistic fragments from sudden explosions and wind-remobilized ash may pose hazards to aircraft.

Meanwhile, Mt. Kanlaon had moderate emission of white steam-laden plumes, rising 500 meters before drifting northwest and southwest.

Phivolcs said sulfur dioxide emission remained at an average of 892 tonnes per day on Feb. 27.

The local government units and the public were discouraged from entering the 4-kilometer radius Permanent Danger Zone (PDZ) due to the further possibilities of sudden and hazardous steam-driven or phreatic eruptions.