The magnitude of the earthquake that struck the area was initially assessed by Phivolcs to be 7.1.
According to Phivolcs, the tectonic earthquake occurred 183 kilometers (km) southeast of Balut Island on Sarangani Island. It was 94 kilometers deep.
While Intensity III was felt in General Santos City, Koronadal City, Tupi, Polomolok, and T'boli in South Cotabato, Alabel and Malapatan in Sarangani, and Matalam, Cotabato, Intensity IV was felt at Glan, Malungon, and Kiamba in Sarangani.
While Intensity III was felt in General Santos City, Koronadal City, Tupi, Polomolok, and T'boli in South Cotabato, Alabel and Malapatan in Sarangani, and Matalam, Cotabato, Intensity IV was felt at Glan, Malungon, and Kiamba in Sarangani.
While Intensity I was felt at Cagayan de Oro City, Maasim in Sarangani, Arakan in Cotabato, and Isulan, SULTAN Kudarat, Intensity II was felt at Tampakan, Tantangan, Banga, Norala, Santo Niño, Surallah, and Lake Sebu in South Cotabato; Zamboanga City; Maitum in Sarangani; Kidapawan City, Makilala, M'lang, Pigcawayan, Tulunan, and Kabacan in Cotabato; and President Quirino in Sultan Kudarat.
Phivolcs also recorded the following instrumental intensities:
Intensity IV- Malungon, Alabel, Kiamba, and Glan, Sarangani
Intensity III- Koronadal City, Tupi, and T'boli in South Cotabato; Malapatan, Sarangani;
Nabunturan, Davao de Oro; Don Marcelino, Davao Occidental; Digos City, Davao del Sur; Gingoog City, Misamis Oriental
Intensity II- Banga, Norala, Lake Sebu, Santo Niño, Tantangan, and Tampakan in South Cotabato; Maitum, and Malungon in Sarangani; Columbio, President Quirino,
Lambayong, Lebak, and Esperanza in Sultan Kudarat; Davao City; Magsaysay, and
Matanao in Davao del Sur; Zamboanga City; San Fernando, Bukidnon; and Kidapawan City, Cotabato
Intensity I - Malaybalay, Kadilingan, and Kalilangan in Bukidnon; Banisilan, Carmen,
Magpet, and President Roxas in Cotabato; Balingasag, Misamis Oriental; Bagumbayan
and Isulan in Sultan Kudarat; and Bislig City, Surigao Del Sur.
Phivolcs said that there is no destructive tsunami threat based on available sea-level data following the magnitude 7.2 earthquake.
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