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Weak mag. 2.8 earthquake - North Pacific Ocean, 81 km southwest of San Jose, San José, Costa Rica, on Thursday, Dec 2, 2021 at 4:42 am (GMT -6) -

Weak magnitude 2.8 earthquake at 18 km depth

2 Dec 13:38 UTC: First to report: RSN after 2 hours and 56 minutes.

Earthquake details

Date & time	Dec 2, 2021 10:42:00 UTC -
Local time at epicenter	Thursday, Dec 2, 2021 at 4:42 am (GMT -6)
Status	Confirmed
Magnitude	2.8
Depth	18.0 km
Epicenter latitude / longitude	9.481°N / 84.667°W (North Pacific Ocean, Costa Rica)
Antipode	9.481°S / 95.333°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	RSN
Nearest volcano	Poas (93 km / 58 mi)
Nearby towns and cities	15 km (10 mi) SSW of Jaco (pop: 4,090) \| Show on map \| Quakes nearby 56 km (35 mi) WSW of Tejar (Acosta) (pop: 22,400) \| Show on map \| Quakes nearby 57 km (35 mi) SW of San Rafael Abajo (Puriscal) (pop: 27,400) \| Show on map \| Quakes nearby 57 km (35 mi) S of Esparza (Espíritu Santo) (pop: 15,600) \| Show on map \| Quakes nearby 57 km (36 mi) SSE of Chacarita (pop: 26,400) \| Show on map \| Quakes nearby 76 km (47 mi) SW of Aserri (pop: 25,900) \| Show on map \| Quakes nearby 77 km (48 mi) SW of San Felipe (pop: 25,000) \| Show on map \| Quakes nearby 81 km (51 mi) SW of San Jose (pop: 335,000) \| Show on map \| Quakes nearby 82 km (51 mi) SW of San Francisco (pop: 55,900) \| Show on map \| Quakes nearby 84 km (52 mi) SW of Heredia (pop: 21,900) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1 x 10⁹ joules (278 kilowatt hours, equivalent to 0.239 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
2.8	18 km	Costa Rica: 16 Km Al Sur De Jaco, Garabito.	RSN

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

Seismograms

Seismic station: Heredia, Costa Rica (HDC/G network) | Distance from quake: 84 km / 52 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

At magnitude 2.8, this quake might have been felt very close to the epicenter and under calm conditions.

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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