MANILA, Philippines - The Philippine Institute of Volcanology and Seismology (Phivolcs) reported a magnitude 7.2 earthquake that shook parts of Mindanao on Saturday morning, April 29, 2017.
The exact time of occurrence was recorded at 04:23:14 a.m. with epicenter at 05.02°N, 125.24°E - 053 km S 30° W of Sarangani town in Davao Occidental.
The earthquake that occurred has a tectonic origin with 57 km depth of focus.
The strong quake was felt at Intensity V in General Santos City; Koronadal City; Santa Maria, Jose Abad Santos, Don Marcelino, Balot Island, Davao Occidental; Polomolok, Tupi, South Cotabato; Alabel, Malapatan, Glan, Sarangani; and Palimbag, Sultan Kudarat.
Also felt in Intensity IV in Davao City, Cotabato City and Zamboanga City.
It was at Intensity III in Cagayan De Oro City and Intensity II in Kidapawan City.
The quake was measured at Instrumental Intensities: Intensity V in General Santos City; Intensity IV in Zamboanga City and Intensity III in Cotabato City.
Damage and aftershocks are expected after the tremor.
The occurrence of sea level disturbance was confirmed by records of the Sarangani sea level monitoring station showing a drop of approximately 30cm and a maximum rise of approximately 10cm wave height relative to normal sea level. It is expected that the continuing sea level fluctuations in the area associated with this event will no longer exceed this recorded wave height.
"PHIVOLCS has now cancelled its Tsunami Advisory as there is no longer a tsunami threat for this event," the latest bulletion stated.
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| Screenshot from Phivolcs earthquake advisory. |
The earthquake that occurred has a tectonic origin with 57 km depth of focus.
The strong quake was felt at Intensity V in General Santos City; Koronadal City; Santa Maria, Jose Abad Santos, Don Marcelino, Balot Island, Davao Occidental; Polomolok, Tupi, South Cotabato; Alabel, Malapatan, Glan, Sarangani; and Palimbag, Sultan Kudarat.
Also felt in Intensity IV in Davao City, Cotabato City and Zamboanga City.
It was at Intensity III in Cagayan De Oro City and Intensity II in Kidapawan City.
The quake was measured at Instrumental Intensities: Intensity V in General Santos City; Intensity IV in Zamboanga City and Intensity III in Cotabato City.
Damage and aftershocks are expected after the tremor.
Cancellation of Tsunami Advisory
After the quake was reported, PHIVOLCS issued a TSUNAMI ADVISORY for coastal communities fronting Celebes Sea (Sarangani, Davao Occidental, South Cotabato, Davao Oriental and Sultan Kudarat) where sea level disturbances were expected.The occurrence of sea level disturbance was confirmed by records of the Sarangani sea level monitoring station showing a drop of approximately 30cm and a maximum rise of approximately 10cm wave height relative to normal sea level. It is expected that the continuing sea level fluctuations in the area associated with this event will no longer exceed this recorded wave height.
"PHIVOLCS has now cancelled its Tsunami Advisory as there is no longer a tsunami threat for this event," the latest bulletion stated.
