The Philippine Institute of Volcanology and Seismology yesterday lowered the alert status for Kanlaon Volcano in Negros Island, noting a protracted decline in overall activity.
Phivolcs dropped the alert status of Kanlaon Volcano from alert level 2 (moderate level of unrest) to alert level 1 (low level of unrest).
“This means that observational parameters have returned to low levels and no magmatic eruption is foreseen in the immediate future,” Phivolcs said.
Despite elevated seismicity recorded on January 4 and 5, April 16, June 27, August 16, and December 8 and 12, the seismic activity in the year 2018 was generally declining to low levels, at an average of four earthquakes a day, the agency said.
Phivolcs also noted that the active steam-dominated degassing from the summit crater has been weak to moderate since Dec. 26, 2017, consistent with a decline in hydrothermal activity.
But Phivolcs warned the public against entering the four-kilometer radius Permanent Danger Zone due to hazards of rockfall, avalanches, sudden outgassing and a steam-driven eruption at the summit area despite the lowering of alert level.*
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