ERUPTION OF MT. MAYON The Philippines May 7, 2013 More lectures at Disasters Supercourse - http://www.pitt.edu/~super1/collections/collection52.htm Walter Hays, Global Alliance for Disaster Reduction, Vienna, Virginia, USA 

CURRENT THINKING ABOUT MT. MAYON At present, Philippine volcanologists believe on the basis of ongoing monitoring that an imminent major eruption of Mt. Mayon is NOT likely.

A SMALL AND DEADLY ERUPTION Scientists called Tuesday’s steam-generated explosion a “small phreatic event,” but it not only killed five, but also left at least six people injured

ERUPTION OF MAYON MAY 7, 2011

ERUPTION OF MAYON

LATERAL BLAST PYROCLASTIC FLOWS FLYING DEBRIS VOLCANIC ASH LAVA FLOWS CAUSES OF RISK LATERAL BLAST PYROCLASTIC FLOWS FLYING DEBRIS VOLCANIC ERUPTIONS VOLCANIC ASH LAVA FLOWS CASE HISTORIES LAHARS TOXIC GASES

PAST ERUPTIONS OF MT. MAYON Mt. Mayon has had 48 recorded eruptions in the past 400 years, with the 1841 event the most destructive when lava from the volcano buried the entire town of Cagsawa and killed more than 1,200 people.

LAST ERUPTION OF MT. MAYON Before the May 7th eruption, Mt. Mayon’s last eruption was in December 2009.

MT. MAYON IN 2009 On Tuesday December 15, 2009, the Philippines evacuated around 20,000 people from the slopes of Mt. Mayon as plumes of ash exploded skyward and lava oozed down its upper slopes.

MT. MAYON DECEMBER 15, 2009