TAAL VOLCANO BULLETIN, 20 April 2011, 8:00 A.M.
Wednesday, 20 April 2011 07:09

Taal Volcano’s (14.0000°N, 120.9833°E) seismic network recorded thirteen (13) volcanic earthquakes during the past 24 hours.  One (1) of these events, which occurred at 3:17 PM yesterday, was felt at Intensity III in Barangay Calauit on the southeastern part of the island accompanied by rumbling sound and Intensity I at Barangay Pira-piraso at the northeastern side of the island. Field observation and measurements conducted at the eastern sector inside the Main Crater Lake yesterday showed that the temperature at the Main Crater Lake increased from 30.5°C to 31.5°C. Result of the ground deformation survey (precise leveling) conducted around the Volcano Island last 05-11 April 2011 showed that volcano edifice is slightly inflated as compared with the 02-09 February 2011 survey.

Alert Level 2 is hoisted over Taal Volcano with the interpretation that magma has been intruding towards the surface, as manifested by CO2 being released in the Main Crater Lake and sustained seismic activity.  Hence, PHIVOLCS advises the public that the Main Crater, Daang Kastila Trail and Mt. Tabaro (1965 -1977 Eruption Site) are strictly off-limits because sudden hazardous steam-driven explosions may occur and high concentrations of toxic gases may accumulate.  Breathing air with high concentration of gases can be lethal to human, animals and even cause damage to vegetation.  In addition, it is reminded that entire Volcano Island is a Permanent Danger Zone (PDZ), and permanent settlement in the island is strictly not recommended.  DOST-PHIVOLCS is closely monitoring Taal Volcano’s activity and any new significant development will be immediately relayed to all concerned.




list of barangay at risk