PHIVOLCS reported that at 1243 on 8 November and at 0739 on 12 November small, short-lived brownish ash plumes from Mayon, associated with a degassing events, drifted WSW and SW, respectively.
There was no accompanying seismic or infrasound record from these events.
On 11 November a volcanic earthquake was associated with a short-lived lava fountaining event at 0840.
The event lasted for 36 seconds based on the seismic record and produced a brownish-gray ash plume that drifted SW.
Crater incandescence was visible most nights during 7-13 November.
The Alert Level remained at 2 (on a 0-5 scale) and PHIVOLCS reminded residents to stay away from the 6-km-radius Permanent Danger Zone and the 7-km Extended Danger Zone on the SSW and ENE flanks.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)