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