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Vesuvius famously destroyed Pompeii and Herculaneum in AD 79, but its greatest danger today comes from the sheer number of people living within reach of future pyroclastic flows and ashfall.—Kaif Shaikh, Interesting Engineering, 9 June 2026 Alert 5 means an explosive and life-threatening eruption is underway with deadly volcanic lava and pyroclastic flows and heavy ashfall.—ABC News, 4 May 2026 The National Weather Service also issued an ashfall advisory overnight for communities downwind of the volcano.—Emily Mae Czachor, CBS News, 23 Apr. 2026 Moreover, the eruption caused 30 flights in and out of Kagoshima Airport to be cancelled due to ashfall.—Fernando Cervantes Jr, USA Today, 18 Nov. 2025 See All Example Sentences for ashfall