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Countries : Philippines
Disaster Management Theme :
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Document Type : Report
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On 10 February 2017 at 10;03 PM Philippine Standard Time (PST), a magnitude (M,) 6.7 earthquake shook the province of Surigao del Norte (SDN) in northeastern Mindanao, Using the data from the Philippine Seismic Network (PSN) of the Philippine Institute of Volcanology and Seismology - Department of Science and Technology (PHIVOLCS-DOST), the epicenter was located in Surigao Strait at 9.80o N and 125.35o E or 16 km offshore northwest of Surigao City at a shallow depth of 10 km, The earthquake was generated by the movemenl of the Philippine Fault - Surigao Segment, Very strong ground shaking was felt at PHIVOLCS Earthquake Intensi$ Scale (PEIS) Vll (destructive) in Surigao City and Municipality of San Francisco, SDN while areas along the surface rupture experienced PEIS Vlll (very destructive). The rest of the municipalities in SDN experienced PEIS Vl (very strong) to lV (moderately strong). This earthquake was felt at PEIS lV to I as far as 250 km away from the epicentral area. Small magnitude earthquakes followed aftenrr,rards. As of 06 March 2017 6:00 AI\A,2,941 aftershocks were recorded by the PSN, of which, 137 were plofled and 38 were reportedly felt. The largest afiershock was recorded on 05 March 2017 at 8:08 AM with a magnitude of (Vlt 5.9 and was felt in Surigao City at PEIS Vl (very strong). The earthquake was associated with a surface rupture that produced a strong ground shaking that damaged buildings and infrastructures in Surigao Cig and San Francisco, SDN, Liquefaction and earthquake-induced landslides were also documented and reported. There were eight (8) reported deaths, 249 sustained injuries and 10,691 affected families due to the earthquake. The estimated cost of damage to public infrastructures amounted to at least 700 million Philippine pesos or 14 million US dollars (NDRRMC Situational Report No.19).