MANILA, Philippines -- Philippine Institute of Volcanology and Seismology has recorded a total of 17 volcanic earthquakes at the Taal Volcano in the past 24 hours as Alert Level 3 remains in effect.

According to the state volcanologists, the 17 volcanic earthquakes include tremors that last from a minute to 36 minutes.

Their report also mentions high levels of sulfur dioxide being emitted which averaged 3755 tonnes on Wednesday.

Steam-rich plumes reached as high as 1,800 meters before drifting southwest from the main crater.

Under Alert Level 3 (magmatic unrest), an explosive eruption could occur due to magma extruding from the main crater, PHIVOLCS said.

It reiterated its earlier advisory that Taal Volcano Island is a Permanent Danger Zone and should be kept off limits.