TAAL VOLCANO BULLETIN 30 July 2015 8:00 A.M. PDF Print

Taal Volcano’s seismic monitoring network recorded one (1) volcanic earthquake during the past 24 hours. Field measurements conducted on July 23, 2015 at the eastern sector of the Main Crater Lake yielded an increase in water temperature from 33.2°C to 33.6°C, a decrease in water level from 0.40 to 0.37 meter, and an increase in acidity from pH 3.12 to 3.03. Ground deformation measurements through precise leveling surveys on May 25 to June 3, 2015 indicated slight inflation of the edifice compared to February - March 2015. Ground deformation measurements from GPS data also indicate an inflationary trend since May 2014, with the edifice being slightly inflated compared to February 2011 baseline data.  Carbon dioxide (CO2) emission at the Main Crater Lake increased from 1634 tonnes/day in April 2015 to 2300 tonnes/day in July 2015.


Alert Level 1 remains in effect over Taal Volcano. This means that hazardous eruption is not imminent. The public, however, is reminded that the Main Crater should be strictly off-limits because sudden steam explosions may occur and high concentrations of toxic gases may accumulate. The northern portion of the Main Crater rim, in the vicinity of Daang Kastila Trail, may also become hazardous when steam emission along existing fissures suddenly increases. Furthermore, the public is also reminded that the entire Volcano Island is a Permanent Danger Zone (PDZ), and permanent settlement in the island is strongly not recommended.