This 7x-speed footage captures a massive pyroclastic flow racing down Indonesia’s Mount Semeru as the volcano unleashed a powerful eruption. | AccuWeather

WATCH: A pyroclastic density current (PDC), locally known as "uson,” was recorded over the Mayon Volcano at 10:40 a.m. on Thursday, Feb. 26. Phivolcs said the flow lasted seven minutes, reaching some 2.5 kilometers from the summit crater and generating an over 1-kilometer-tall grayish to brownish ash cloud that drifted southwest. Alert Level 3 remains in effect over Mayon. | 🎥: Phivolcs/X via Fritz Dominique Madulid, INQUIRER.net trainee | INQUIRER.net

MAYON LOGS LARGEST PYROCLASTIC FLOW #MayonVolcano generated its largest pyroclastic density current (PDC) to date at 10:35 a.m. Monday, sending volcanic material down the Mi-isi Gully for about four kilometers, #PHIVOLCS reported. The PDC produced a brownish ash plume more than two kilometers high that drifted southwest, causing ashfall in several barangays of Camalig and Guinobatan. PHIVOLCS said Alert Level 3 remains in effect, and entry into the six-kilometer-radius Permanent Danger Zone is s