MANILA, Philippines — The Philippine Institute of Volcanology and Seismology (Phivolcs) raised the Alert Level 4 over Taal Volcano just hours after it spewed ash. READ: BREAKING: Taal volcano spews ash in phreatic eruption Alert Level 4 means that “hazardous explosive eruption is possible within hours to days.” In its bulletin issued 7:30 p.m., Phivolcs said … Continue reading Taal Volcano now on Alert Level 4: ‘Hazardous eruption imminent’