Some features of this site are not compatible with your browser. Install Opera Mini to
better experience this site.
Mayon Volcano Threatens Major Eruption
This page contains archived content and is no longer being updated. At the time of publication, it represented the best available science. However, more recent observations and studies may have rendered some content obsolete.
Mayon Volcano, on the Philippine island of Luzon, continued its activity on December 28, 2009. Described as showing an “intense level of unrest” by the Philippine Institute of Volcanology and Seismology, Mayon exhibited 7 ash explosions, dozens of earthquakes related to the movement of magma beneath the volcano, over 100 rock falls from the summit, and 3 active lava flows. The Philippine government is enforcing evacuations in a danger zone extending 7 kilometers (4 miles) north and 8 kilometers (5 miles) south of the summit.
This satellite image shows Mayon emitting a thin volcanic plume. Ash obscures the summit crater and clouds hide lava flows on the volcano’s flanks. The natural-color image was acquired by the Advanced Land Imager (ALI) aboard the NASA Earth Observing-1 (EO-1) satellite.
NASA Earth Observatory image by Robert Simmon, using EO-1 ALI data provided by the NASA EO-1 team. Caption by Robert Simmon.
Mayon Volcano exhibited an intense level of unrest in late December, 2009.