Mayon volcano spewed giant columns of ash on Monday and Tuesday signaling a prelude to stronger explosive eruptions, according to The Manila Times Online on Wednesday.
“What we saw on Monday and Tuesday is just a start and a prelude to stronger explosive eruptions,” said Eduardo Laguerta, Philippine Institute of Volcanology and Seismology resident chief volcanologist.
The provincial government of Albay on Tuesday imposed alert level 5 contingency measures following threats of pyroclastic flow.
Laguerta said Monday’s eruption was denser than the 9 am explosion on Tuesday.
He admitted that he didn’t know how long the eruptions would last, adding, however, that, at least, they have the element of time.
Phivolcs raised the volcano’s alert level to 4 on Monday after two successive 10-km cauliflower-type ash columns billowed in the sky, generating heavy ashfall in the towns of Camalig, Guinobatan and Ligao City.
For the past 24 hours since Monday, Mayon’s vibration and rumbling sounds were getting stronger and were heard as far as 15-16 km away from its slopes.
Albay public safety emergency management office has imposed a nine-km extended danger zone to prevent residents from going back to their communities in the wake of Mayon’s erratic character.
Tens of thousands of residents in Santo Domingo, Daraga, Camalig, Guinobatan, including cities of Legazpi and Ligao were told to evacuate.