Moderate mag. 3.8 earthquake - Desamparados, 3.7 km south of San Jose, San José, Costa Rica, on Sunday, 21 Mar 2021 1:51 am (GMT -6) -

Moderate mag. 3.8 earthquake - Desamparados, 3.7 km south of San Jose, San José, Costa Rica, on Sunday, 21 Mar 2021 1:51 am (GMT -6)

Moderate magnitude 3.8 earthquake at 6 km depth

21 Mar 07:56 UTC: First to report: INETER after 5 minutes.
Date & time: 21 Mar 2021 07:51:18 UTC -
Local time at epicenter: Sunday, 21 Mar 2021 1:51 am (GMT -6)
Magnitude: 3.8
Depth: 6.0 km
Epicenter latitude / longitude: 9.9°N / 84.08°W (Desamparados, Provincia de San José, Costa Rica)
Nearest volcano: Irazu (26 km / 16 mi)
Nearby towns and cities:
2 km (1 mi) E of Alajuelita (San José) (pop: 13,800) --> See nearby quakes!
3 km (2 mi) E of San Felipe (San José) (pop: 25,000) --> See nearby quakes!
4 km (2 mi) S of San Jose (San José) (pop: 335,000) --> See nearby quakes!
4 km (2 mi) NW of San Miguel (San José) (pop: 28,800) --> See nearby quakes!
4 km (3 mi) SW of San Pedro (San José) (pop: 27,500) --> See nearby quakes!
5 km (3 mi) WSW of Curridabat (San José) (pop: 34,600) --> See nearby quakes!
12 km (7 mi) SSE of San Francisco de Heredia (Heredia) (pop: 21,900) --> See nearby quakes!
18 km (11 mi) WNW of Cartago (pop: 26,600) --> See nearby quakes!
19 km (12 mi) SE of Alajuela (pop: 47,500) --> See nearby quakes!
115 km (71 mi) W of Limon (Limón) (pop: 63,100) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 21°C (70 F), humidity: 73%, wind: 10 m/s (19 kts) from ESE
Primary data source: INETER
Estimated released energy: 3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 tons of TNT) More info
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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.
MagnitudeDepthLocationSource
3.86 km3 Km Al Sur De San José, Costa RicaINETER
3.89 kmCOSTA RICAEMSC
3.89 km1 Km Al Norte De Desamparados, San Jose., Costa RicaRSN

User reports for this quake (17)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Santa Ana, San Jose Province, Rio Oro (12.6 km WNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : I heard what I thought was an explosion then felt the house shake a few times | One user found this interesting.  
Ciudad Colon / not felt : I was probably too deep asleep that I didn't feel it. It is scary to think that the worst could have happened and I would've remained trapped in my sleep.  
Fuerte de corta duración (12.5 km SSW of epicenter) [Map] / Strong shaking (MMI VI) : Fuerte de corta duración (reported through our app)  
Ulloa Heredia (0 km ESE of epicenter) [Map] / Light shaking (MMI IV)
8.7 km NE of epicenter [Map] / not felt : Gracias a Dios no porque estaba dormida (reported through our app)  
Pozos (14.1 km WNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short
Santa Ana (10.9 km WNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : It woke us up in Santa Ana. Felt like a bump followed by vibration.  
18.3 km W of epicenter [Map] / Light shaking (MMI IV)
Escazu, (6.8 km WNW of epicenter) [Map] / Moderate shaking (MMI V) : Was awakened by loud noise and shake  
5.7 km W of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
65.4 km NW of epicenter [Map] / not felt (reported through our app)
San Juan de Dios, Desamparados (2.2 km S of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 1-2 s
Santa Ana / Light shaking (MMI IV) : Heard something I thought was an explosion, followed by shaking  
Santa Ana / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
San Antonio Escazu, CR / Light shaking (MMI IV) / 2-5 s : Jolt  
Escazu / Light shaking (MMI IV)
Ciudad colon / Light shaking (MMI IV) / 5-10 s
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