Very strong mag. 6.8 earthquake - North Pacific Ocean, 31 km east of Isla Cabo Blanco Island, Costa Rica, on Friday, December 22, 1939 at 04:44 (GMT)
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Very strong magnitude 6.8 earthquake at 25 km depth
Depth: 25.0 km
Epicenter latitude / longitude: 9.528°N / 84.832°W↗ (North Pacific Ocean, Costa Rica)
Antipode: 9.528°S / 95.168°E↗
Nearest volcano: Cerro San Miguel (57 km / 35 mi)
Nearby towns and cities:
24 km (15 mi) WSW of Jaco (pop: 4,090) --> See nearby quakes!
51 km (32 mi) S of Chacarita (pop: 26,400) --> See nearby quakes!
55 km (34 mi) SSW of Esparza (Espíritu Santo) (pop: 15,600) --> See nearby quakes!
68 km (42 mi) WSW of San Rafael Abajo (Puriscal) (pop: 27,400) --> See nearby quakes!
70 km (43 mi) WSW of Tejar (Acosta) (pop: 22,400) --> See nearby quakes!
87 km (54 mi) SW of Alajuela (pop: 47,500) --> See nearby quakes!
93 km (58 mi) SW of San Francisco (pop: 55,900) --> See nearby quakes!
94 km (58 mi) WSW of San Jose (pop: 335,000) --> See nearby quakes!
95 km (59 mi) SW of Heredia (pop: 21,900) --> See nearby quakes!
97 km (60 mi) WSW of Curridabat (pop: 34,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1 x 1015 joules (278 gigawatt hours, equivalent to 2.4 x 105 tons of TNT or 14.9 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.
|6.8||25 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 (0 quakes)
So far, no aftershocks have been registered.