Moderate mag. 4.7 earthquake - North Pacific Ocean, 78 km southwest of San Jose, Costa Rica, on Saturday, 27 Feb 2021 6:01 pm (GMT -6) -

Moderate mag. 4.7 earthquake - North Pacific Ocean, 78 km southwest of San Jose, Costa Rica, on Saturday, 27 Feb 2021 6:01 pm (GMT -6)

Moderate magnitude 4.7 earthquake at 3 km depth

28 Feb 00:07 UTC: First to report: INETER after 5 minutes.
28 Feb 00:14: Magnitude recalculated from 4.8 to 4.7. Hypocenter depth recalculated from 6.0 to 3.0 km (from 3.7 to 1.9 mi). Epicenter location corrected by 4 km (2.5 mi) towards NE.
Date & time: 28 Feb 2021 00:01:50 UTC -
Local time at epicenter: Saturday, 27 Feb 2021 6:01 pm (GMT -6)
Magnitude: 4.7
Depth: 3.0 km
Epicenter latitude / longitude: 9.41°N / 84.56°W (North Pacific Ocean, Costa Rica)
Nearest volcano: Poas (98 km / 61 mi)
Nearby towns and cities:
24 km (15 mi) SSE of Jaco (pop: 4,090) --> See nearby quakes!
52 km (32 mi) SW of Tejar (Acosta) (pop: 22,400) --> See nearby quakes!
55 km (34 mi) SSW of San Rafael Abajo (Puriscal) (pop: 27,400) --> See nearby quakes!
68 km (42 mi) SSE of Chacarita (pop: 26,400) --> See nearby quakes!
78 km (49 mi) SW of San Jose (pop: 335,000) --> See nearby quakes!
80 km (50 mi) SW of San Francisco (pop: 55,900) --> See nearby quakes!
80 km (50 mi) SW of Curridabat (pop: 34,600) --> See nearby quakes!
82 km (51 mi) SW of San Francisco de Heredia (Heredia) (pop: 21,900) --> See nearby quakes!
87 km (54 mi) SW of Cartago (pop: 26,600) --> See nearby quakes!
179 km (111 mi) WSW of Puerto Limon (pop: 63,100) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 28.5°C (83 F), humidity: 67%, wind: 2 m/s (4 kts) from SW
Primary data source: INETER
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 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
4.73 km24 Km Al Sur De Jacó, Costa RicaINETER
5.117 km26 Km Al Sur De Jaco, Garabito., Costa RicaRSN
4.617 km25 Km SSE of Jacó, Costa RicaUSGS
4.620 kmCOSTA RICAEMSC

User reports for this quake (16)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Playa Hermosa, Garabito, Puntarenas (19.9 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s : A slight roll, followed a few seconds later by a strong kick, followed by fading rolling over the next few seconds. Maybe 7 seconds from start to finish.  
84.3 km NE of epicenter [Map] / not felt : Estaba en reposo y ni así (reported through our app)  
75.4 km NNE of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s (reported through our app)
San Jose (42.6 km NE of epicenter) [Map] / Very weak shaking (MMI II)
44.1 km E of epicenter [Map] / Very weak shaking (MMI II) : Just one weak jolt (reported through our app)  
23.6 km NNW of epicenter [Map] / Very weak shaking (MMI II)
jaco (22.4 km NNW of epicenter) [Map] / Light shaking (MMI IV) / 10-15 s : The bed was shaking, a mirror attached to the wall was swinging perpendicular to the wall.  
JACO Beach / Light shaking (MMI IV) : Sitting on my butt on the beach I rocked side to side and my daughter felt it toooo  
JACO Beach / Light shaking (MMI IV) : Sitting on my butt on the beach I rocked side to side and my daughter felt it toooo  
Esterillos Oeste, Costa Rica / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Jaco / Moderate shaking (MMI V)
Esterillos Oeste / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : 2 very small wave, second A bit bigger  
Jaco / Weak shaking (MMI III) : Bed swayed back and forth a little  
Jaco / Weak shaking (MMI III)
Jaco / Light shaking (MMI IV) / horizontal (sideways) swinging / 15-20 s
Jaco / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s
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