Volcanic Alert: PhilippinesClick Map to Enlarge
Sept 25, 2006
Mayon volcano activities significantly increased yesterday as it posted the highest number of recorded volcanic earthquakes and tremor episodes in almost two weeks, indicating that the volcano is still on a "high level of unrest."
The Philippine Institute of Volcanology and Seismology (Phivolcs), in its bulletin yesterday, said it detected 14 volcanic earthquakes and 114 tremor episodes during its 24-hour observation period.
Yesterday’s volcanic earthquakes are the highest since Sept. 15, when the number of volcanic earthquakes only ranged from zero to 12. The highest number of volcanic earthquakes since Mayon’s alert status was lowered to Alert Level 3 was at 18 last Sept. 14.
The number of tremor episodes was at a record high of 114, considering that tremor events had already gone down from more than 100 two weeks ago to 14 last Sept. 23. Tremor episodes recorded were only at 21 the other day.
"A fair level of crater glow was observed and surface activity was characterized by intermittent extrusion of lava from the crater and rolling of incandescent lava fragments along the volcano’s slopes," Phivolcs added.
Phivolcs said Alert Level 3 remains hoisted over Mayon as it continues to demonstrate a "high level of unrest" for the past days despite a decline in volcanic activity this month.
