(Eagle News)–The Philippine Institute of Volcanology and Seismology on Sunday, July 3, warned about an increase in activity at Kanlaon volcano. PHIVOLCS issued the advisory after it monitored 41 volcanic earthquakes around the summit since 5 a.m. of June 30. According to PHIVOLCS, these included “shallow tornillo signals that could be associated with shallow gas movement along the fractures within the upper volcanic slopes.” Ground data also showed a “short-term slight inflation of the lower […]