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Moderate mag. 3.7 earthquake - Provincia de Alajuela, 45 km east of Liberia, Costa Rica, on Tuesday, Dec 6, 2022 at 7:01 pm (GMT -6) -

Moderate magnitude 3.7 earthquake at 6 km depth

7 Dec 13:10 UTC: First to report: RSN after 12 hours.

Earthquake details

Date & time	Dec 7, 2022 01:01:00 UTC -
Local time at epicenter	Tuesday, Dec 6, 2022 at 7:01 pm (GMT -6)
Status	Confirmed
Magnitude	3.7
Depth	6.0 km
Epicenter latitude / longitude	10.704°N / 85.033°W (Upala, Provincia de Alajuela, Costa Rica)
Antipode	10.704°S / 94.967°E
Shaking intensity	Light shaking near epicenter
Felt	0 reports
Primary data source	RSN
Nearest volcano	Tenorio (4 km / 2 mi)
Nearby towns and cities	4 km (3 mi) SE of Bijagua (Alajuela) (pop: 1,090) \| Show on map \| Quakes nearby 22 km (13 mi) S of Upala (Alajuela) (pop: 4,190) \| Show on map \| Quakes nearby 27 km (17 mi) NNW of Tilaran (Tilarán, Guanacaste) (pop: 7,300) \| Show on map \| Quakes nearby 30 km (18 mi) SSE of San Jose (Upala, Alajuela) (pop: 31,400) \| Show on map \| Quakes nearby 31 km (19 mi) NNE of Canas (Cañas, Guanacaste) (pop: 20,300) \| Show on map \| Quakes nearby 118 km (73 mi) NW of Alajuela (pop: 47,500) \| Show on map \| Quakes nearby 127 km (79 mi) NW of San Francisco (Heredia) (pop: 55,900) \| Show on map \| Quakes nearby 135 km (84 mi) NW of San Jose (San José) (pop: 335,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	2.2 x 10¹⁰ joules (6.22 megawatt hours, equivalent to 5.35 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
3.7	6 km	Costa Rica: 4 Km Al Sureste De Bijagua, Upala.	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: 127 km / 79 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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