Updates on volcanic activity (Smithsonian)
The Smithsonian/USGS Weekly Volcanic Activity Report provides information about global volcanism on a weekly basis. Latest Taal report has been published on 30 Jun 2021 07:55.
PHIVOLCS reported that unrest at Taal continued during 22-29 June. Low-level background tremor continued with as many as 10 volcanic earthquake per day. As many as three low-frequency volcanic earthquakes were detected during 23-26 June and 0-3 episodes of volcanic tremor during 23-27 June lasted two minutes to two hours. Upwelling of hot volcanic fluids in the crater lake produced steam-and-gas plumes that rose as high as 2.1 km and drifted in multiple directions. Sulfur dioxide emissions averaged 2,284-5,129 tonnes/day. In a special report issued on 28 June PHIVOLCS warned that public that the high levels of sulfur dioxide, the gas-and-steam plumes rising as high as 3 km above the lake?s surface, and weather conditions had caused vog over the Taal Caldera region. They issued another special statement on 29 June noting that on 28 June sulfur dioxide emissions averaged 14,326 tonnes/day, the highest rate ever recorded at Taal. Voggy conditions persisted, mainly impacting the NE and E lakeshore communities, with some residents reporting adverse effects. PHIVOLCS noted the continuing state of elevated unrest, reminding the public that the Alert Level for Taal remained at 2 (on a scale of 0-5). PHIVOLCS strongly recommended no entry onto the island, and access to the Main Crater, Daang Kastila fissure (along the walking trail), and boating on Taal Lake was strictly prohibited.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
See the detail here