Very strong mag. 6.4 earthquake - Osa, Provincia de Puntarenas, 133 km southeast of San Jose, Costa Rica, on Saturday, April 28, 1990 at 01:23 (GMT)
Quake Data | Interactive map | User Reports | Aftershocks | Earlier quakes here | Quakes in Costa Rica | Provincia de Puntarenas | Provincia de San José | Provincia de Limon
Very strong magnitude 6.4 earthquake at 23 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 22.7 km
Epicenter latitude / longitude: 8.887°N / 83.5°W↗ (Osa, Provincia de Puntarenas, Costa Rica)
Antipode: 8.887°S / 96.5°E↗
Nearest volcano: Durika (58 km / 36 mi)
Nearby towns and cities:
9 km (5 mi) SSE of Ciudad Cortés (Puntarenas) (pop: 3,850) --> See nearby quakes!
37 km (23 mi) SSW of Buenos Aires (Puntarenas) (pop: 11,700) --> See nearby quakes!
43 km (27 mi) SSE of Mercedes (Pérez Zeledón, San José) (pop: 5,470) --> See nearby quakes!
53 km (33 mi) NW of Golfito (Puntarenas) (pop: 6,780) --> See nearby quakes!
53 km (33 mi) SSE of Daniel Flores (San José) (pop: 10,000) --> See nearby quakes!
58 km (36 mi) SSE of San Isidro (San José) (pop: 34,900) --> See nearby quakes!
67 km (42 mi) WNW of Corredor (Ciudad Neily, Puntarenas) (pop: 7,080) --> See nearby quakes!
133 km (83 mi) SSE of San Jose (San José) (pop: 335,000) --> See nearby quakes!
133 km (83 mi) SSW of Puerto Limon (Limón) (pop: 63,100) --> See nearby quakes!
190 km (118 mi) SE of Puntarenas (pop: 35,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 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.
|6.4||23 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.
Recorded aftershocks, latest first (1 quake)
- 20 Sep 1990 03:20 UTC| M 4.6 |33 km (20.5 mi) depth|47 km (29 mi) distance| USGS | Details