Mag. 4.6 earthquake - North Pacific Ocean, 105 km southwest of Nicoya, Guanacaste, Costa Rica, on Friday, 4 Dec 2020 12:10 pm (GMT -6) -

Mag. 4.6 earthquake  - North Pacific Ocean, 105 km southwest of Nicoya, Guanacaste, Costa Rica, on Friday, 4 Dec 2020 12:10 pm (GMT -6)

Light magnitude 4.6 earthquake at 26 km depth

4 Dec 18:14 UTC: First to report: INETER after 4 minutes.
4 Dec 18:28: Magnitude recalculated from 4.7 to 4.6. Epicenter location corrected by 4.7 km (2.9 mi) towards NE.
Update Fri, 4 Dec 2020, 18:15
Magnitude 4.7 earthquake strikes near Nicoya, Costa Rica
4.7 quake 84 Km Al Sur De Ostional, Costa Rica, 4 Dec 12.10 pm (GMT -6)
4.7 quake 84 Km Al Sur De Ostional, Costa Rica, 4 Dec 12.10 pm (GMT -6)
Just 5 minutes ago, a 4.7-magnitude earthquake struck near Nicoya, Provincia de Guanacaste, Costa Rica. The tremor was recorded around noon on Friday 4 December 2020 at 12.10 pm local time, at a shallow depth of 26 km below the surface.
The event was filed by the Nicaraguan Institute of Territorial Studies (INETER), the first seismological agency to report it.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Nicoya (pop. 15,300) located 109 km from the epicenter, and Santa Cruz (pop. 12,300) 116 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you’re in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
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Earthquake data:

Date & time: 4 Dec 2020 18:10:15 UTC -
Local time at epicenter: Friday, 4 Dec 2020 12:10 pm (GMT -6)
Magnitude: 4.6
Depth: 26.0 km
Epicenter latitude / longitude: 9.291°N / 85.841°W (North Pacific Ocean, Costa Rica)
Nearest volcano: Miravalles (183 km / 114 mi)
Nearby towns and cities:
74 km (46 mi) SSW of Samara (pop: 1,070) --> See nearby quakes!
105 km (65 mi) SSW of Nicoya (pop: 15,300) --> See nearby quakes!
134 km (83 mi) SW of Puntarenas (pop: 35,700) --> See nearby quakes!
140 km (87 mi) SW of Chacarita (pop: 26,400) --> See nearby quakes!
151 km (94 mi) SSW of Canas (Cañas) (pop: 20,300) --> See nearby quakes!
151 km (94 mi) WSW of Esparza (Espíritu Santo) (pop: 15,600) --> See nearby quakes!
156 km (97 mi) SSW of Liberia (pop: 45,400) --> See nearby quakes!
196 km (122 mi) WSW of Alajuela (pop: 47,500) --> See nearby quakes!
203 km (126 mi) WSW of San Francisco (pop: 55,900) --> See nearby quakes!
206 km (128 mi) WSW of San José (pop: 335,000) --> See nearby quakes!
85 km (53 mi) WSW of Isla Cabo Blanco Island --> See nearby quakes!
226 km (141 mi) SSW of Isla Mancarroncito Island --> See nearby quakes!
229 km (142 mi) SSW of Isla La Venada Island --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 26.1°C (79 F), humidity: 81%, wind: 2 m/s (4 kts) from SW
Primary data source: INETER
Estimated released energy: 5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) More info
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If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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 4.626 km80 Km Al Sur De Ostional, Costa RicaINETER
M 4.410 kmOFF COAST OF COSTA RICAEMSC
M 4.410 km76 Km SSW of Sámara, Costa RicaUSGS

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Earlier earthquakes in the same area since 1900

Mag. 4.6 earthquake - North Pacific Ocean, 105 km southwest of Nicoya, Guanacaste, Costa Rica, on Friday, 4 Dec 2020 12:10 pm (GMT -6)

Map of earlier quakes

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