Moderate mag. 5.1 earthquake - North Pacific Ocean, 3.3 km southwest of Puntarenas, Costa Rica, on Friday, 1 May 1981 at 06:17 (GMT)

Moderate mag. 5.1 earthquake - North Pacific Ocean, 3.3 km southwest of Puntarenas, Costa Rica, on Friday, 1 May 1981 at 06:17 (GMT)

Moderate magnitude 5.1 earthquake at 90 km depth

Date & time: 1 May 1981 06:17:25 UTC
Magnitude: 5.1
Depth: 90.2 km
Epicenter latitude / longitude: 9.953°N / 84.857°W (North Pacific Ocean, Costa Rica)
Nearest volcano: Cerro San Miguel (18 km / 11 mi)
Nearby towns and cities:
3 km (2 mi) SW of Puntarenas (pop: 35,700) --> See nearby quakes!
9 km (6 mi) WSW of Chacarita (pop: 26,400) --> See nearby quakes!
22 km (13 mi) WSW of Esparza (Espíritu Santo) (pop: 15,600) --> See nearby quakes!
59 km (37 mi) SSE of Canas (Cañas) (pop: 20,300) --> See nearby quakes!
63 km (39 mi) SW of Quesada (Barrio San Martín) (pop: 27,300) --> See nearby quakes!
64 km (40 mi) WNW of San Rafael Abajo (Puriscal) (pop: 27,400) --> See nearby quakes!
80 km (50 mi) W of San Francisco (pop: 55,900) --> See nearby quakes!
81 km (51 mi) W of San Francisco de Heredia (Heredia) (pop: 21,900) --> See nearby quakes!
85 km (53 mi) W of San Jose (pop: 335,000) --> See nearby quakes!
99 km (61 mi) SE of Liberia (pop: 45,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) 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 5.190 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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