Mag. 3.7 earthquake - 22 km south of Nicoya, Provincia de Guanacaste, Costa Rica, on 2020-10-20 21:10:49 -

Mag. 3.7 earthquake  - 22 km south of Nicoya, Provincia de Guanacaste, Costa Rica, on 2020-10-20 21:10:49

Minor magnitude 3.7 earthquake at 22 km depth

21 Oct 03:14 UTC: First to report: INETER after 3 minutes.
21 Oct 03:42: Magnitude recalculated from 3.4 to 3.6.
22 Oct 07:07: Magnitude recalculated from 3.6 to 3.7. Epicenter location corrected by 1.5 km (1 mi) towards SSE.
Date & time: 21 Oct 2020 03:10:49 UTC -
Local time at epicenter: 2020-10-20 21:10:49
Magnitude: 3.7
Depth: 22.0 km
Epicenter latitude / longitude: 9.958°N / 85.485°W (Costa Rica)
Nearest volcano: Miravalles (94 km / 58 mi)
Nearby towns and cities:
10 km (6 mi) NNE of Sámara (Nicoya) (pop: 1,070)
13 km (8 mi) SSW of Hojancha (pop: 1,820)
22 km (13 mi) S of Nicoya (pop: 15,300)
35 km (22 mi) SSE of Santa Cruz (pop: 12,300)
71 km (44 mi) W of Puntarenas (pop: 35,700)
75 km (47 mi) S of Liberia (pop: 45,400)
149 km (92 mi) W of San Francisco (pop: 55,900)
154 km (95 mi) W of San José (pop: 335,000)
Weather at epicenter at time of quake:
Light Rain 22.5°C (72 F), humidity: 95%, wind: 2 m/s (3 kts) from E
Primary data source: INETER
Estimated released energy: 2.2 x 1010 joules (6.22 megawatt hours, equivalent to 5.35 tons of TNT) [learn more]
[smaller] [bigger]
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 3.722 km21 Km Al Oeste De Porvenir, Costa RicaINETER
M 3.926 km11 Km Al Suroeste De Hojancha, Guanacaste., Costa RicaRSN
M 3.926 km18 Km SSW of Nicoya, Costa RicaEMSC

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Nosara / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s : Slightly longer than the typical ones we feel here, it was a soft to strong to soft shape to the vibrations.
Playa Lagarto, 27 de Abril, Guanacaste, Costa Rica / Weak shaking (MMI III) / simple rolling (tilting sideways along one direction) / 1-2 s
Nosara, Costa Rica / Light shaking (MMI IV)
Black beauty / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Had just gone to bed, felt a little vibration followed by the bed shaking quite well
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area

Mag. 3.7 earthquake - 22 km south of Nicoya, Provincia de Guanacaste, Costa Rica, on 2020-10-20 21:10:49
Volcanoes & Earthquakes - new app for Android
 

More on VolcanoDiscovery

 
Why is there advertising on this site?

Support us!

Maintaining the website and our free apps is a time- and cost-intensive effort.
If you find the information useful and would like to support our team to develop further features and get the upgraded ad-free version, consider making a donation (PayPal or Online cc payment).
Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
Thanks to your past donations, these features have been added recently:
  • Earthquake archive back to 1900
  • Additional data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.