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

Caught on cam: Boaters flee volcanic ash cloud | CTV News

PYROCLASTIC FLOW A pyroclastic flow is a fast-moving current of extremely hot gas, volcanic ash, and rock fragments that rushes down the slopes of a volcano during explosive eruptions. These flows can reach speeds of over 320 km/h and temperatures exceeding 1,000 °C, making them one of the most dangerous volcanic hazards. Unlike lava flows, pyroclastic flows can travel great distances, destroy everything in their path, and cause widespread devastation due to their speed, heat, and suffocating as

Pyroclastic flow observed at Semeru Volcano This sped-up (x7) footage shows a pyroclastic flow descending the slopes of Semeru. These flows consist of hot ash, gas, and fragmented rock moving rapidly under gravity. Semeru remains one of Indonesia’s most active volcanoes and is continuously monitored. Credit: CCTV Semeru #Semeru #Geology #GeologyPage #Volcanology #EarthScience #Indonesia | Geology Page