A sudden, minor ashfall was detected in the town of Guinobatan, Albay, as the Mayon Volcano exhibited heightened activity. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) alerted the public promptly and urged that residents in the vicinity of the volcano remain vigilant.

At around 11 a.m. on November 20, 2023, Francis Luzeriaga, a resident near the volcano, reported witnessing ash particles sticking to his vehicle. 

Other reports surfaced on social media as locals shared their experiences with the ashfall.

The Municipal Disaster Risk Reduction and Management Office (MDRRMO) of Guinobatan continues to coordinate with Barangay Disaster Risk Reduction and Management Councils (BDRRMCs) to ensure constant monitoring and readiness for any emergency response.

MDRRMO head Joy Maravillas said, "Maski mag-ano, mag-increase po su activity nung Mayon, medyo ano (ligtas) pa naman po yung Guinobatan. Ang instruction samo makakapa-evacute kami pag alert level five."

PHIVOLCS confirmed the ashfall event, emphasizing that it was not visible due to weather conditions. However, their instruments were able to monitor the ashfall.

Dr. Paul Alanis, resident volcanologist at PHIVOLCS Bicol, said, "Mula August medyo bumababa na although kung ikukumpara kahapon dumami ulit, parang mga ano lang ata kahapon 50 or 60 rockfalls, today nasa halos mga 97."

PHIVOLCS advised the residents near the volcano to stay vigilant on changes in the volcano's status.