Lahars from the 1985 Nevado del Ruiz eruption in Colombia caused the Armero tragedy, which killed an estimated 23,000 people, when the city of Armero was buried under of mud and debris.
Lahar Osceola, ki je nastal pred 5600 leti na ognjeniku Mount Rainier v državi Washington (ZDA), je v koritu reke White River nanesel 140 metrov debel sloj blata in pokril površino preko 330 kvadratnih kilometrov.