PHIVOLCS reported that daily voluminous steam-and-gas emissions at Taal rose as high as 2.8 km above the rim of Main Crater and drifted NNW, NW, SW, and SSE during 18-24 June, based on webcam images. There were five periods of volcanic tremor recorded during 18-19 and 21-23 June, each lasting 1-10 minutes. Vog was reported during 18-21 June; sulfur dioxide emissions averaged 4,641 tonnes per day on 20 June. During 2130-2132 on 24 June phreatic events generated steam-laden plumes that rose 600 m above Main Crater and drifted W. The Alert Level remained at 1 (on a scale of 0-5), and PHIVOLCS reminded the public that the entire Taal Volcano Island was a Permanent Danger Zone (PDZ) and to take extra precaution around Main Crater and along the Daang Kastila fissure.

Geological Summary. Taal is one of the most active volcanoes in the Philippines and has produced some powerful eruptions. The 15 x 20 km Talisay (Taal) caldera is largely filled by Lake Taal, whose 267 km2 surface lies only 3 m above sea level. The maximum depth of the lake is 160 m, with several submerged eruptive centers. The 5-km-wide Volcano Island in north-central Lake Taal is the location of all observed eruptions. The island is composed of coalescing small stratovolcanoes, tuff rings, and scoria cones. Powerful pyroclastic flows and surges have caused many fatalities.

Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)