MANILA - Mount Mayon in Albay province spewed ash and lava anew on Wednesday, as authorities remained on alert for a hazardous eruption.
Rumbling sounds boomed and a thick pillar of smoke and ash billowed from the mouth of the volcano around 6 a.m., after it sprayed lava overnight.
The lava fountain gushed up to 3 to 5 kilometers, while the ash column drifted westward towards the second and third districts of Albay, said Ed Laguerta of the Philippine Institute of Volcanology and Seismology.
This was the fifth time that Mayon emitted ash and lava since Tuesday, he told DZMM.
Mayon remained under alert level 4, which means a hazardous eruption is possible within days.
Ash has started to cover Guinobatan, which lies 13 kilometers away from Mayon, said Mayor Ann Onjoco.
"Ang tindi na po dito, grabe na namang ashfall," she told DZMM.
Inhalation of volcanic ash may irritate the eyes and airways, and trigger asthma and allergy attacks, said Dr. Jubert Benedicto of the Philippine General Hospital.
At least 40,000 residents have been evacuated in nearby towns.
Mayon, known for its perfect cone, continued emitting ash, as of 6:40 a.m.
With a report from Jose Carretero, ABS-CBN News