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(Eagle News) – The Philippine Institute of Volcanology and Seismology (PHIVOLCS) said a “phreatic eruption” or steam-driven explosion occured in Mt. Pinatubo’s crater on Tuesday, Nov. 30. In its 6 p.m. update on Tuesday, PHIVOLCS said that evidence of the phreatic eruption was the visual observation of an “eruption plume” as well as data from “seismic, infrasound and satellite monitoring.” It said that the phreatic eruption occured in between 12:09 and 12:13 p.m. on Tuesday. This […]
(Eagle News) — The Philippine Institute of Volcanology and Seismology has raised the alert level 1 for Mt. Pinatubo. In making the move, PHIVOLCS noted the “persistence of seismic activity.” For instance, since January 20, 2021, it said the Pinatubo Volcano Network (PVN) has detected 1,722 “imperceptible earthquakes” beneath the Pinatubo edifice. It said the first cluster on Jan. 20-26 occurred along the Sacobia Lineament at depths of 15-28 kilometers and ranged between ML1.0 and […]
The Philippine Institute of Volcanology and Seismology – Department of Science and Technology (PHIVOLCS-DOST) enjoins the nation in commemorating the 1991 Pinatubo Eruption on its 25th anniversary this June 2016. Nine months after the catastrophic 16 July 1990 M7.8 Luzon Earthquake, Pinatubo ended about 400 years of quiescence on 2 April 1991 with a series of steam-driven eruptions from vents in its upper flanks. This was followed in quick succession by the sighting of a […]
