Manila, Nov. 8 -- There is risk of lahar or volcanic mudflow from Mayon Volcano as Typhoon Uwan nears and intensifies over the Philippine Sea.

In a lahar advisory on Saturday afternoon, the Philippine Institute of Volcanology and Seismology (PHIVOLCS) said heavy rains from Uwan could trigger volcanic sediment flows, muddy stream flows or muddy run-off in rivers and drainage areas around Mayon Volcano.

Communities near Miisi, Binaan Mabinit, Buyuan, Anoling, Matan-ag, Basud, Quirangay, Tumpa, Sua, Muladbucad, Nasisi, Nabonton, Buang, San Vicente, Bulawan and Lidong Channels are "at risk" and are advised to take precautions.

The Masarawag and Maninila Channels, as well as creeks within immediate vicinities, "could once again feed non-eru...