Jaco, Costa Rica Earthquake, Mw6.5

At 02:28 UTC on Monday November 13 (20:28 local time on Sunday November 12), an earthquake of moment magnitude Mw6.5 struck approximately 10 mi (16 km) southeast of Jaco, Costa Rica (pop. ~10,000) at a depth of 12.3 mi (19.8 km), according to the United States Geological Survey (USGS). Because the earthquake happened after sunset, more information about damage is expected later today, Monday November 13 . At least one building has been evacuated in Jaco due to damage, according to local media. Collapsed walls and landslides have been reported . The Costa Rican Electricity Institute reported power outages due to downed power lines and damage to a transformer. Costa Rica’s Public Safety Ministry reported two injuries related to the earthquake. USGS Earthquake Parameters. According to the USGS, the population in this region resides in structures that are a mixture of vulnerable and earthquake resistant construction. The predominant vulnerable building types are mud wall and informal (metal, timber, GI) construction. The USGS reports that recent earthquakes in this area have caused secondary hazards such as landslides and liquefaction which might have contributed to losses. Earthquake location: 16km SE of Jaco, Costa Rica. Earthquake magnitude: 6.5. Time & Date: 02:28 UTC, November 13 2017. Epicenter lat/lon: 9.526°N, -84.505°W. Focal Depth: 12.3 mi (19.8 km). Max. MMI: VIII (Severe). Estimated population exposed by MMI V+ follows. MMI V (Moderate): 1,855,000 people; Cities exposed: San Jose, Puntarenas, Chacarita, Cartago, San Francisco, Paraiso, Mercedes, San Miguel, San Pedro, San Juan, Rafael Abajo, San Vicente, San Vicente de Moravia, Guadalupe, San Felipe. MMI VI (Strong): 27,000 people; Cities exposed: -. MMI VII (Very Strong): 10,000 people; Cities exposed: -. MMI VIII (Severe): 5,000 people; Cities exposed: -. (Note: cities defined as settlements with over 25,000 inhabitants.)

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