CITY OF LEGAZPI – Steam-driven eruptions were recorded in Mt. Mayon on Monday, but the Philippine Institute of Volcanology and Seismology (Phivolcs) said that this would not change the state of alert about the volcano.
In a telephone interview, Renato Solidum, director of Phivolcs, said the phreatic explosions on Monday were triggered when the groundwater beneath the volcano's vent was mixed with hot steam or pressure.
Solidum said that the alert state in the volcano remained at Level 2, which means that it was at a moderate level of concern.
Glow of the crater
He said that an intense crater glow should be observed, among other parameters, before considering a change in the volcano's alertness.
So far, the volcano had exhibited mild to moderate flashes in the crater, said Phivolcs.
"There are no other parameters, except the bulge of the building in the southeast sector as indicated by our precise level data last October," said Solidum.
The swelling of the building is caused by the infusion of magma, he said.
On Monday, Mayon's gray-to-gray ash plumes, which occurred between 7:59 a.m. and at 8:05 a.m., they reached 300 to 500 meters above the top of the volcano before deviating to the southwest.
Solidum reiterated the agency's warning to residents around the volcano not to enter the permanent 6-kilometer-radius danger zone, including the 7-km extended warning zone of precautionary radius in the south-southwest to east-west sector. northeast, which extends from Barangay Anoling in the city of Camalig. to Barangay Sta. Misericordia in Sto. Sunday city, both in the province of albay. –Reports by Mar S. Arguelles and Michael Jaucian
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