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By Arlie O. Calalo
April 5, 2023
THE Philippine Institute of Volcanology and Seismology (Phivolcs) has cancelled its tsunami advisory following Tuesday night's magnitude 6.2 earthquake that hit Catanduanes in Bicol Region. Phivolcs had it initially at magnitude 6.6.
Phivolcs chief Teresito "Tito" Bacolcol said the warning was cancelled based on data from the agency's sea level monitoring stations facing the epicentral area which showed that "no significant" sea level disturbances had been recorded since the earthquake struck the town of Gigmoto at 8:54 p.m.
"With this, any effects due to minor sea level disturbances have largely passed and therefore Phivolcs has now cancelled its recommendation issued for this event," Bacolcol said.
Located 150 kilometers northeast of the provincial town, the earthquake had a depth of 72kms and was tectonic in origin, according to Phivolcs.
Nearly two hours later, Phivolcs said an aftershock with magnitude 4.9 was recorded in the same town.
Intensity 4 was felt by residents in Virac, Catanduanes; Intensity 3 in Prieto Diaz and City of Sorsogon, Sorsogon; San Policarpo, Eastern Samar; Allen, Biri, Bobon, Catarman, Laoang, Lavezares, Rosario, San Jose and San Roque, Northern Samar; Calbiga and City of Catbalogan, Samar;
Intensity 2 in Malinao and City of Tabaco, Albay; Borongan City, Eastern Samar; Babatngon, Dagami, Dulag, Palo, Santa Fe and Tanauan, Leyet; Tacloban City; and San Antonio, Northern Samar; and Intensity 1 in Alangalang, City of Baybay and Tabontabon, Leyte.
Meanwhile, Instrumental Intensity 2 was recorded in Legazpi City, Albay; Daet, Camarines Norte; Sipocot, Iriga City and Pili, Camarines Sur; Kananga, Dulag and Abuyog, Leyte; San Roque, Northern Samar; Bulusan and Prieto Diaz, Sorsogon; and
Intensity 1 in Ragay and Pasacao, Camarines Sur; Quinapondan, Eastern Samar; Palo and Alangalang, Leyte; Monreal and Uson, Masbate; Gumaca, Polillo, Mauban and
Guinayangan, Quezon; and Donsol, Sorsogon.
