First, where is Mayon?
Mt. Mayon, the Philippines’ most active volcano, is in the province of Albay. The cities and towns that have jurisdiction over it are Legazpi City, Tabaco City, Ligao City, Guinobatan, Camalig, Daraga, Malilipot, and Sto. Domingo. It is about three hours away from Mt. Bulusan in Sorsogon (also active), and Mt. Asog (also active) and Mt. Isarog (potentially active) in Camarines Sur.
What is happening?
Alert Level 4 has been raised over the volcano by the Philippine Institute of Volcanology and Seismology (Phivolcs). The highest alert level is 5. Alert Level 4 means there’s an imminent big eruption and minor eruptions may occur from time to time. That’s why we see a lot of ash columns emitted from the crater.