 No significant seismic activity had occurred before or after the ash emissions, indicating the explosions were near surface hydrothermal events.On February 10, 2008, PHIVOLCS issued an alert stating that the seismic network at Kanlaon Volcano recorded a total of 21 low frequency volcanic earthquakes (LFVQ) during the past 24 hours.Due to the increasing number of recorded volcanic earthquakes, PHIVOLCS raised Kanlaon Volcano's alert status from Alert Level 0 to Alert Level 1, which means the volcano is at slightly elevated unrest and volcanic activity could lead to steam and ash ejections.