Moderate mag. 5.4 earthquake - North Pacific Ocean, 46 km southwest of Liberia, Costa Rica, on Wednesday, 16 April 1975 at 04:46 (GMT)

Moderate mag. 5.4 earthquake - North Pacific Ocean, 46 km southwest of Liberia, Costa Rica, on Wednesday, 16 April 1975 at 04:46 (GMT)

Moderate magnitude 5.4 earthquake at 69 km depth

Date & time: 16 Apr 1975 04:46:21 UTC
Magnitude: 5.4
Depth: 69.0 km
Epicenter latitude / longitude: 10.456°N / 85.813°W (North Pacific Ocean, Costa Rica)
Nearest volcano: Rincón de la Vieja (68 km / 42 mi)
Nearby towns and cities:
33 km (21 mi) NW of Santa Cruz (pop: 12,300) --> See nearby quakes!
46 km (28 mi) WSW of Liberia (pop: 45,400) --> See nearby quakes!
52 km (32 mi) NW of Nicoya (pop: 15,300) --> See nearby quakes!
78 km (49 mi) W of Canas (Cañas) (pop: 20,300) --> See nearby quakes!
92 km (57 mi) SW of San José (Upala) (pop: 31,400) --> See nearby quakes!
119 km (74 mi) WNW of Puntarenas (pop: 35,700) --> See nearby quakes!
125 km (78 mi) WNW of Chacarita (pop: 26,400) --> See nearby quakes!
191 km (119 mi) WNW of San Francisco (pop: 55,900) --> See nearby quakes!
193 km (120 mi) SSE of Managua (Nicaragua) (pop: 973,100) --> See nearby quakes!
198 km (123 mi) WNW of San Jose (pop: 335,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.9 x 1012 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
MagnitudeDepthLocationSource
M 5.469 kmCosta RicaUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

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Aftershocks

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Recorded aftershocks, latest first (0 quakes):
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Earlier earthquakes in the same area since 1900


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