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Phivolcs closely monitoring Kanlaon Volcano in Negros

The Philippine Institute of Volcanology and Seismology (Phivolcs) is closely monitoring the Kanlaon Volcano in Negros island.

136 earthquakes recorded

Phivolcs recorded one hundred thirty-six (136) volcano-tectonic earthquakes on the western flanks during the 24 hour observation period.

According to their bulletin report, Four (4) of these earthquakes at 1:01 AM, 1:04 AM, 1:34 AM, and 2:06 AM were recorded at Magnitude 3.2-4.7 by the Philippine Seismic Network and were felt at Intensities II to V in La Carlota and Bago City, Negros Occidental and Canlaon City, Negros Oriental.

Kanlaon Volcano Activity

June 13, 2020

Activity at the vent consisted of moderate emission of white steam-laden plumes that rose 200 meters before drifting southwest. Sulfur dioxide (SO2) emission was measured at an average of 438 tonnes/day.

April 2020

Short-term electronic tilt monitoring on the southeastern flanks recorded continuing deflation on the lower slopes but inflation on the mid slopes since April 2020. These parameters indicate that hydrothermal or magmatic activity is occurring beneath the edifice.

January 2020

Ground deformation data from continuous GPS measurements indicate a slight deflation of the lower and mid slopes since January 2020.

Kanlaon Volcano- Alert Level 1

DOST-PHIVOLCS reminds the public that Kanlaon Volcano is at Alert Level 1 since March 11, 2020, which means that it is at an abnormal condition and has entered a period of unrest.

The local government units and the public are strongly reminded that entry into the 4-kilometer radius Permanent Danger Zone (PDZ) must be strictly prohibited due to the further possibilities of sudden and hazardous steam-driven or phreatic eruptions.

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Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ejecta from any sudden phreatic eruption can be hazardous to aircraft. DOST-PHIVOLCS is closely monitoring Kanlaon Volcano’s activity and any new development will be relayed to all concerned.

Where is Kanlaon Volcano Located?

Kanlaon Volcano is located between the borders of Negros Oriental and Negros Occidental. It is one of the most active volcanoes of the Central Philippines.  It is a stratovolcano in the north-central part of the island of Negros.

It forms the highest peak of Negros Island and is located west of Canlaon about 36 km southeast of Bacolod City and belongs to Canlaon National Park. At 2,465 meters above sea level, it is the highest point in Negros Island and in the Visayas.

Source: Phivolcs

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