Mag. 3.9 earthquake - North Pacific Ocean, 48 km south of Puntarenas, Costa Rica, on Friday, 4 Dec 2020 11:14 am (GMT -6) -
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Minor magnitude 3.9 earthquake at 18 km depth
4 Dec 17:34 UTC: First to report: RSN after 20 minutes.
Local time at epicenter: Friday, 4 Dec 2020 11:14 am (GMT -6)
Magnitude: 3.9
Depth: 18.0 km
Epicenter latitude / longitude: 9.547°N / 84.913°W

Nearest volcano: Platanar (103 km / 64 mi)
Nearby towns and cities:
30 km (19 mi) S of Paquera (pop: 1,510) --> See nearby quakes!
48 km (30 mi) S of Puntarenas (pop: 35,700) --> See nearby quakes!
83 km (52 mi) W of Quepos (pop: 7,810) --> See nearby quakes!
99 km (61 mi) W of San Marcos (pop: 4,260) --> See nearby quakes!
99 km (62 mi) WSW of San Francisco (pop: 55,900) --> See nearby quakes!
101 km (63 mi) WSW of San José (pop: 335,000) --> See nearby quakes!
103 km (64 mi) S of Tilaran (Tilarán) (pop: 7,300) --> See nearby quakes!
104 km (64 mi) WSW of San Pedro (pop: 27,500) --> See nearby quakes!
195 km (121 mi) SSE of Cardenas (Nicaragua) (pop: 1,200) --> See nearby quakes!
217 km (135 mi) SSE of San Juan del Sur (Nicaragua) (pop: 7,790) --> See nearby quakes!
224 km (139 mi) WNW of Golfito (pop: 6,780) --> See nearby quakes!
22 km (14 mi) E of Isla Cabo Blanco Island --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
26.6°C (80 F), humidity: 78%, wind: 2 m/s (4 kts) from SW
Primary data source: RSN
Scattered Clouds

Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) 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.
Magnitude | Depth | Location | Source |
M 3.9 | 18 km | 26 Km Al Sureste De Cobano, Puntarenas., Costa Rica | RSN |
M 3.9 | 18 km | COSTA RICA | EMSC |
M 3.6 | 20 km | 23 Km Al Sur De Paquera, Puntarenas., Costa Rica | RSN |
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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There are no user reports for this quake yet. If you felt it Earlier earthquakes in the same area since 1900
Mag. 3.9 earthquake - North Pacific Ocean, 48 km south of Puntarenas, Costa Rica, on Friday, 4 Dec 2020 11:14 am (GMT -6)- Date / time UTC| Mag |Depth|Age|Distance| Details
- 05 Sep 2012 14:42| 7.6 |40km / 25mi|8 years ago|67km / 42mi| 12km ESE of Hojancha, Costa Rica
- 22 Apr 1991 21:56| 7.6 |10km / 6.2mi|30 years ago|202km / 126mi| Costa Rica
- 05 Oct 1950 16:09| 7.5 |98km / 61mi|70 years ago|105km / 65mi| Costa Rica
- 25 Mar 1990 13:22| 7.3 |22km / 14mi|31 years ago|43km / 27mi| Costa Rica
- 05 Dec 1941 20:47| 7.3 |20km / 12.4mi|79 years ago|205km / 127mi| Costa Rica
- 03 Apr 1983 02:50| 7.1 |37km / 23mi|38 years ago|217km / 135mi| Costa Rica
- 04 Mar 1924 10:07| 7.1 |15km / 9.3mi|97 years ago|113km / 70mi| Costa Rica
- 23 Aug 1978 00:38| 7.0 |56km / 35mi|42 years ago|81km / 50mi| Costa Rica
- 06 Dec 1941 21:24| 7.0 |15km / 9.3mi|79 years ago|121km / 75mi| Off the Coast of Costa Rica
- 20 Aug 1999 10:02| 6.9 |20km / 12.4mi|21 years ago|100km / 62mi| Costa Rica
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