Search results
Results From The WOW.Com Content Network
Lahars – a type of landslide originating from a volcanic ash – formed quickly along the southern and eastern rims of Mayon Volcano, which had produced a fresh layer of ash in August 2006. The lahars destroyed dykes and dams meant to contain the debris flow, [40] which were not designed to prevent major landslides. [45]
Mayon is shared by eight cities and municipalities of Albay province.. Mayon is the main landmark and highest point of the province of Albay and the whole Bicol Region in the Philippines, rising 2,463 meters (8,081 ft) from the shores of Albay Gulf about 10 kilometers (6.2 mi) away.
The ruins were unharmed even as the typhoon devastated the surrounding countryside with mudslides and lahar that killed at least 1,266 people. [ 18 ] [ 19 ] The incident is similar to another catastrophe in the same region in 1825, shortly after the 1814 Mayon eruption.
Large lahars hundreds of metres wide and tens of metres deep can flow several tens of metres per second (22 mph or more), much too fast for people to outrun. [9] On steep slopes, lahar speeds can exceed 200 kilometres per hour (120 mph). [9] A lahar can cause catastrophic destruction along a potential path of more than 300 kilometres (190 mi). [10]
The Philippine Institute of Volcanology and Seismology then issued lahar warnings for the Mayon Volcano, the Taal Volcano, and Mount Pinatubo hours prior to the typhoon's landfall. [29] Prior to the typhoon's landfall, at least 231,312 individuals were evacuated by local government units. [1]
In 1991, damage to crops and property was estimated at $374 million (or $711 million today), to which continuing lahar floods added a further $69 million (or $127 million today) in 1992. In total, 42 percent of the cropland around the volcano was affected by more lahar floods, dealing a severe blow to the agricultural economy in the region. [21]
Typhoon Durian (Reming, 2006) – a typhoon which caused devastating lahar flows from the Mayon Volcano. Tropical Storm Fung-wong (Mario, 2014) – another tropical system that caused lahar flows from the Mayon Volcano. Typhoon Vongfong (Ambo, 2020) – a typhoon which took a relatively similar path to Yunya.
Further advisories were given to low-flying aircraft against the dangers of sudden phreatic eruptions, and to local residents near rivers and streams in case of lahar flows. [ 12 ] [ 13 ] [ 14 ] There were also concerns that rains from Typhoon Noul could trigger lahars and mudslides near the mountain. [ 15 ]