Light mag. 4.2 earthquake - Provincia de Alajuela, 32 km northwest of San Jose, San José, Costa Rica, on Thursday, Jun 16, 2022 at 9:36 am (GMT -6) -

Light mag. 4.2 earthquake - Provincia de Alajuela, 32 km northwest of San Jose, San José, Costa Rica, on Thursday, Jun 16, 2022 at 9:36 am (GMT -6) Light mag. 4.2 earthquake - Provincia de Alajuela, 32 km northwest of San Jose, San José, Costa Rica, on Thursday, Jun 16, 2022 at 9:36 am (GMT -6)

Light magnitude 4.2 earthquake at 39 km depth

16 Jun 15:39 UTC: First to report: VolcanoDiscovery after 3 minutes.
16 Jun 15:42: Now using data updates from INETER
16 Jun 15:49: Magnitude recalculated from 4.2 to 4.3. Hypocenter depth recalculated from 37.0 to 39.0 km (from 23 to 24 mi). Epicenter location corrected by 1.8 km (1.1 mi) towards SSE.
16 Jun 15:56: Magnitude recalculated from 4.3 to 4.2.

Earthquake details

Date & timeJun 16, 2022 15:36:52 UTC -
Local time at epicenterThursday, Jun 16, 2022 at 9:36 am (GMT -6)
StatusConfirmed
Magnitude4.2
Depth39.0 km
Epicenter latitude / longitude10.065°N / 84.348°W (Provincia de Alajuela, Costa Rica)
Antipode10.065°S / 95.652°E
Shaking intensityWeak shaking
Felt31 reports
Primary data sourceINETER
Nearest volcanoPoas (20 km / 12 mi)
Nearby towns and cities5 km (3 mi) SE of Naranjo (Alajuela) (pop: 11,900) | Show on map | Quakes nearby
16 km (10 mi) WNW of Alajuela (pop: 47,500) | Show on map | Quakes nearby
24 km (15 mi) WNW of Mercedes (Heredia) (pop: 26,000) | Show on map | Quakes nearby
25 km (16 mi) WNW of San Francisco (Heredia) (pop: 55,900) | Show on map | Quakes nearby
26 km (16 mi) WNW of Heredia (pop: 21,900) | Show on map | Quakes nearby
27 km (17 mi) NNW of San Rafael Abajo (Puriscal, San José) (pop: 27,400) | Show on map | Quakes nearby
30 km (19 mi) SSE of Ciudad Quesada (Barrio San Martín, Alajuela) (pop: 27,300) | Show on map | Quakes nearby
32 km (20 mi) WNW of San Jose (San José) (pop: 335,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 24.9°C (77 F), humidity: 65%, wind: 1 m/s (2 kts)
Estimated seismic energy released1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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
4.239 km15 Km Al Oeste De Alajuela, Costa RicaINETER
4.658 kmCosta Rica: 5 Km Al Norte De Atenas, Alajuela.RSN

User reports for this quake (31)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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San Juan, Grecia, Provincia de Alajuela (3.9 km ENE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 15-20 s : Quake started with an initial mild jolt followed by an increasing in horizontal movement. The movement went on for 15 to 20 seconds. Items swayed. | One user found this interesting.  
san ramon de alajuela costa rica (17.2 km W of epicenter) [Map] / Light shaking (MMI IV) : sitting at desk in bedroom and felt chair shake side to side and heard a banging noise, like a heavy truck on the road | One user found this interesting.  
San Jose Airport Costa Rica (18.1 km ESE of epicenter) [Map] / Weak shaking (MMI III) / vibration and rolling / 5-10 s : I am sitting on a bed in a hotel room. Rolling vibration started and then there was a sharp jolt and some more weaker vibration rolling | One user found this interesting.  
Hampton Inn, SJO Airport (18.1 km ESE of epicenter) [Map] / Light shaking (MMI IV) : Sitting down on 4th floor of hotel. Light shaking with one hard jolt. | One user found this interesting.  
Atenas, Alejuela / Light shaking (MMI IV) / complex motion difficult to describe / 2-5 s : It was little. And only lasted a couple seconds. At first it felt like when something really heavy falls. Then just a little wiggle  
Palmares, Palmares, Alajuela / Weak shaking (MMI III) / single vertical bump / 5-10 s : Sembrado débil con traqueteo de casa muy corto. Como el que produce una aplanadora con vibración. 4° Mercalli  
Heredia (26.2 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s
Heredia (27.6 km ESE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
Atenas (10 km SSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : I was sitting on my bed and everything shaked.  
Curridabat, San José (36.8 km ESE of epicenter) [Map] / Weak shaking (MMI III) / 5-10 s
Santa ana (20.5 km SE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
San Rafael de alajuela Costa Rica (16.8 km SE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : In apartment  
El Cajon de Grecia Costa rica (9.3 km NE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : Couch was shaking (reported through our app)  
Rohrmoser, San Jose, Costa Rica (32.7 km ESE of epicenter) [Map] / Light shaking (MMI IV)
Atenas, Costa Rica (10.1 km SSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s : On my porch  
Costa Rica Heredia (20.8 km E of epicenter) [Map] / Very weak shaking (MMI II)
Carrillos, Poás, Alajuela (3.5 km SSE of epicenter) [Map] / Weak shaking (MMI III) : We were sitting at the table and there was a mild shaking.  
Mercedes (25.1 km E of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : Sitting in office  
Atenas, Costa Rica / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
San Rafael de Alajuela / Light shaking (MMI IV) / single vertical bump / 1-2 s
Heredia Costa Rica / Very weak shaking (MMI II) / both vertical and horizontal swinging / 2-5 s
Atenas / Light shaking (MMI IV) / 2-5 s
Manuel Antonio / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s
Los Ángeles, Atenas, Alajuela / Very weak shaking (MMI II) / single lateral shake / 1-2 s : Very weak shaking  
Grecia, alajuela / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Mild intensity  
Rio oro Santa Ana / Weak shaking (MMI III) / rattling, vibrating
San Ramon / Light shaking (MMI IV) / single lateral shake / 2-5 s : The house started to creak and l could feel the whole house move. Lasted about 2 - 3 seconds.  
Atenas, Costa Rica / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
Pozos de Santa Ana, San Jose / Very weak shaking (MMI II) / single vertical bump / very short
Heredia / Light shaking (MMI IV) / single lateral shake / 2-5 s
san Francisco de Heredia / Weak shaking (MMI III) / single vertical bump / 2-5 s : i just felt dizzy and the ground was like popping for like 4 seconds  
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