A new lava dome was spotted in the summit crater of Mayon Volcano on Friday, Nov. 13.
The Philippine Institute of Volcanology and Seismology said this was following a bulging of the crater floor between Nov. 2 and 4.
PHIVOLCS said the event--which was detected by a partner international agency using satellite images---was caused by the still-unexposed dome.
In its Wednesday advisory, PHIVOLCS said a minor Strombolian activity had also been monitored in the volcano in the last 24 hours.
Eight volcanic earthquakes were also observed, with sulfur dioxide flux pegged at 2293 tons.
PHIVOLCS said entry into the 6-kilometer radius Permanent Danger Zone should remain prohibited.
Aircraft should also be banned from flying above the volcano, with rockfall, ballistic fragments and fountaining, moderate-sized eruptions and pyroclastic density currents, among others, possible.
The volcano remains under alert level 3.
