Philippines

NDRRMC update - SitRep No. 10 re Taal Volcano Update

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Sources: DOST-PHIVOLCS and OCD Region IV–A

  1. SITUATION OVERVIEW
  • Alert Level 2 is still hoisted over Taal Volcano, with the interpretation that magma has been intruding towards the surface as manifested by Carbon Dioxide (CO2) being released in the Main Crater Lake and increase in seismic activity

  • Taal Volcano’s (14.0000ºN, 120.9833ºE) seismic network recorded nineteen (19) volcanic earthquakes during the past 24 hours. One of these events, which occurred at 12:23 AM 23 April 2011, was felt at Intensity II at Brgy Calauit at the southeastern part of the Volcano Island. Another event which occurred at 4:31 AM 23 April 2011 was felt at Intensity III in Brgy Pira-piraso at the northeastern part of Volcano Island accompanied by rumbling sounds

  • Field observation and measurements conducted at the eastern sector inside the Main Crater Lake 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 levelling) 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