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PHIVOLCS: Taal Volcano Eruption Update (01/18/20, 8AM)

TAAL VOLCANO BULLETIN (18 January 2020 8:00 A.M.)

Activity in the Main Crater in the past 24 hours has been characterized by steady steam emission and infrequent weak explosions that generated white to dirty white ash plumes 50 to 600 meters tall and dispersed ash southwest of the Main Crater.

Sulfur dioxide (SO2) emission was measured at an average of 360 tonnes/day yesterday, consistent with weak plume activity at the Main Crater.

The Philippine Seismic Network plotted a total of six hundred sixty-six (666) volcanic earthquakes since 1:00 PM, January 12, 2020. One hundred seventy-four (174) of these registered at magnitudes M1.2 – M4.1 and were felt at Intensities I – V. Since 5:00 AM on January 17, 2020 until 5:00 AM today, there were thirty-two (32) volcanic earthquakes plotted, registered at magnitudes M1.5 -M3.3. The Taal Volcano Network recorded eight hundred seventy-six  (876) volcanic earthquakes including six (6) tremor events and twenty (20) low-frequency earthquakes. Such intense seismic activity likely signifies continuous magmatic intrusion beneath the Taal edifice, which may lead to further eruptive activity.

Alert Level 4 still remains in effect over Taal Volcano. This means that hazardous explosive eruption is possible within hours to days. DOST-PHIVOLCS strongly reiterates total evacuation of Taal Volcano Island and high-risk areas as identified in the hazard maps within the 14-km radius from Taal Main Crater and along the Pansipit River Valley where fissuring has been observed. Residents around Taal Volcano are advised to guard against the effects of heavy and prolonged ashfall. Civil aviation authorities must advise pilots to avoid the airspace around Taal Volcano as airborne ash and ballistic fragments from the eruption column pose hazards to aircraft.



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