A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ...
Morning Overview on MSN
Mayon volcano stays at alert level 3 as pyroclastic flows slide down its slopes in the Philippines
Roughly 3,000 residents have left their homes near Mayon Volcano in the Philippines after pyroclastic flows began sliding ...
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