Moderate mag. 5.4 earthquake - 14 km south of Canas, Cañas, Provincia de Guanacaste, Costa Rica, on Wednesday, 23 August 1978 at 00:50 (GMT)
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Moderate magnitude 5.4 earthquake at 71 km depth
Date & time: 23 Aug 1978 00:50:29 UTC
Depth: 71.0 km
Epicenter latitude / longitude: 10.303°N / 85.123°W (Cañas, Provincia de Guanacaste, Costa Rica)
Nearest volcano: Cerro Chopo (20 km / 12 mi)
Nearby towns and cities:
14 km (9 mi) S of Canas (Cañas, Guanacaste) (pop: 20,300) --> See nearby quakes!
25 km (15 mi) SW of Tilaran (Tilarán, Guanacaste) (pop: 7,300) --> See nearby quakes!
40 km (25 mi) ENE of Nicoya (Guanacaste) (pop: 15,300) --> See nearby quakes!
50 km (31 mi) SE of Liberia (Guanacaste) (pop: 45,400) --> See nearby quakes!
52 km (32 mi) NW of Chacarita (Puntarenas) (pop: 26,400) --> See nearby quakes!
61 km (38 mi) NW of Esparza (Espíritu Santo, Puntarenas) (pop: 15,600) --> See nearby quakes!
72 km (45 mi) S of San José (Upala, Alajuela) (pop: 31,400) --> See nearby quakes!
76 km (47 mi) W of Quesada (Barrio San Martín, Alajuela) (pop: 27,300) --> See nearby quakes!
114 km (71 mi) WNW of San Francisco (Heredia) (pop: 55,900) --> See nearby quakes!
121 km (75 mi) WNW of San Jose (San José) (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
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.
|M 5.4||71 km||Costa Rica||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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More infoRecorded aftershocks, latest first (1 quakes):
- 06 Sep 1978 02:01 UTC| M 4.7 |8 km (5 mi) depth|16 km (10 mi) distance| USGS | Details