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Light mag. 3.4 earthquake - North Pacific Ocean, 74 km southwest of San Jose, San José, Costa Rica, on Thursday, Nov 4, 2021 at 6:01 am (GMT -6) -

Light magnitude 3.4 earthquake at 21 km depth

4 Nov 14:06 UTC: First to report: RSN after 2 hours and 5 minutes.

Earthquake details

Date & time	Nov 4, 2021 12:01:00 UTC -
Local time at epicenter	Thursday, Nov 4, 2021 at 6:01 am (GMT -6)
Status	Confirmed
Magnitude	3.4
Depth	21.0 km
Epicenter latitude / longitude	9.55°N / 84.638°W (North Pacific Ocean, Costa Rica)
Antipode	9.55°S / 95.362°E
Shaking intensity	Weak shaking near epicenter
Felt	0 reports
Primary data source	RSN
Nearest volcano	Poas (85 km / 53 mi)
Nearby towns and cities	7 km (5 mi) S of Jaco (pop: 4,090) \| Show on map \| Quakes nearby 49 km (31 mi) SW of San Rafael Abajo (Puriscal) (pop: 27,400) \| Show on map \| Quakes nearby 49 km (31 mi) WSW of Tejar (Acosta) (pop: 22,400) \| Show on map \| Quakes nearby 50 km (31 mi) S of Esparza (Espíritu Santo) (pop: 15,600) \| Show on map \| Quakes nearby 51 km (32 mi) SSE of Chacarita (pop: 26,400) \| Show on map \| Quakes nearby 69 km (43 mi) WSW of Aserri (pop: 25,900) \| Show on map \| Quakes nearby 74 km (46 mi) SW of San Jose (pop: 335,000) \| Show on map \| Quakes nearby 74 km (46 mi) SW of San Francisco (pop: 55,900) \| Show on map \| Quakes nearby 77 km (48 mi) WSW of Curridabat (pop: 34,600) \| Show on map \| Quakes nearby 86 km (54 mi) WSW of Cartago (pop: 26,600) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	7.9 x 10⁹ joules (2.21 megawatt hours, equivalent to 1.9 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.	Depth	Location	Source
3.4	21 km	Costa Rica: 7 Km Al Sur De Jaco, Garabito.	RSN
3.4	21 km	COSTA RICA	EMSC

Most recent quakes Top 20 past 24 hrs Quakes in Costa Rica

Seismograms

Seismic station: Heredia, Costa Rica (HDC/G network) | Distance from quake: 77 km / 48 mi | Show on map | Station Info

Seismic station Heredia, Costa Rica: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

Earlier earthquakes in the same area

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