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Light mag. 3.3 earthquake - 4 km south of San Jose, San José, Costa Rica, on Thursday, Apr 8, 2021 at 7:39 pm (GMT -6) -

Light mag. 3.3 earthquake - 4 km south of San Jose, San José, Costa Rica, on Thursday, Apr 8, 2021 at 7:39 pm (GMT -6) Light mag. 3.3 earthquake - 4 km south of San Jose, San José, Costa Rica, on Thursday, Apr 8, 2021 at 7:39 pm (GMT -6)

Light magnitude 3.3 earthquake at 8 km depth

9 Apr 01:42 UTC: First to report: INETER after 2 minutes.
9 Apr 01:49: Magnitude recalculated from 3.4 to 3.3. Hypocenter depth recalculated from 12.0 to 8.0 km (from 7.5 to 5 mi). Epicenter location corrected by 1.1 km (0.7 mi) towards N.

Earthquake details

Date & timeApr 9, 2021 01:39:40 UTC -
Local time at epicenterThursday, Apr 8, 2021 at 7:39 pm (GMT -6)
StatusConfirmed
Magnitude3.3
Depth8.0 km
Epicenter latitude / longitude9.9°N / 84.07°W (Desamparados, Provincia de San José, Costa Rica)
Antipode9.9°S / 95.93°E
Shaking intensityWeak shaking
Felt9 reports
Primary data sourceINETER
Nearest volcanoIrazu (25 km / 16 mi)
Nearby towns and cities3 km (2 mi) NNE of San Rafael Arriba (San José) (pop: 15,100) | Show on map | Quakes nearby
3 km (2 mi) NNE of San Rafael Arriba (San José) (pop: 15,100) | Show on map | Quakes nearby
3 km (2 mi) NNW of San Miguel (San José) (pop: 28,800) | Show on map | Quakes nearby
4 km (2 mi) SSW of San Pedro (San José) (pop: 27,500) | Show on map | Quakes nearby
4 km (2 mi) SSE of San Jose (San José) (pop: 335,000) | Show on map | Quakes nearby
4 km (3 mi) WSW of Curridabat (San José) (pop: 34,600) | Show on map | Quakes nearby
12 km (8 mi) SSE of San Francisco (Heredia) (pop: 55,900) | Show on map | Quakes nearby
12 km (8 mi) SSE of Heredia (pop: 21,900) | Show on map | Quakes nearby
17 km (11 mi) WNW of Cartago (pop: 26,600) | Show on map | Quakes nearby
20 km (13 mi) SE of Alajuela (pop: 47,500) | Show on map | Quakes nearby
Weather at epicenter at time of quakeLight Rain 18.4°C (65 F), humidity: 100%, wind: 2 m/s (4 kts) from N
Estimated seismic energy released5.6 x 109 joules (1.56 megawatt hours, equivalent to 1.34 tons of TNT) | about seismic energy
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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.
Mag.DepthLocationSource
3.38 km3 Km Al Sur De San José, Costa RicaINETER
3.210 kmCOSTA RICAEMSC
3.59 km1 Km Al Suroeste De Curridabat, San Jose., Costa RicaRSN
3.210.4 km2 Km E of Alajuelita, Costa RicaUSGS

User reports for this quake (9)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Desamparados San Juan de Dios (3.7 km SSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Light Shaking (reported through our app)  
San Antonio de Escazu (7.8 km W of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short : A short jolt  
Pacayas, Cartago, Cartago (11.8 km S of epicenter) [Map] / Light shaking (MMI IV) / 1-2 s
Santa Ana,San José Province / Light shaking (MMI IV) / vibration and rolling / 10-15 s : Jolt after rumbling, no damge  
Tres Ríos, Cartago / Very weak shaking (MMI II) / 1-2 s
Santa Ana, costa rica / Light shaking (MMI IV) / rattling, vibrating / very short
Santa Ana / Light shaking (MMI IV) / single vertical bump / very short : Heard a rumble and felt a single mild jolt that rattled windows.  
Gravilias, Desamparados / Light shaking (MMI IV) / 1-2 s
San Rafael, Escazu / Very weak shaking (MMI II) / single vertical bump / 1-2 s
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