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Light mag. 3.4 earthquake - San German, 10.1 km southeast of Mayaguez, Mayagüez Barrio-Pueblo, Puerto Rico, on Thursday, Mar 16, 2023 at 5:57 pm (GMT -4) -

Light magnitude 3.4 earthquake at 14 km depth

16 Mar 22:01 UTC: First to report: VolcanoDiscovery after 4 minutes.
16 Mar 22:08: Now using data updates from USGS
16 Mar 22:24: Magnitude recalculated from 3.1 to 3.4. Hypocenter depth recalculated from 19.2 to 14.0 km (from 11.9 to 8.7 mi). Epicenter location corrected by 1.2 km (0.7 mi) towards N.

Earthquake details

Date & time	Mar 16, 2023 21:57:24 UTC -
Local time at epicenter	Thursday, Mar 16, 2023 at 5:57 pm (GMT -4)
Status	Confirmed
Magnitude	3.4
Depth	14.0 km
Epicenter latitude / longitude	18.128°N / 67.083°W (Duey Bajo Barrio, San German, Puerto Rico)
Antipode	18.128°S / 112.917°E
Shaking intensity	Weak shaking
Felt	5 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	5 km (3 mi) N of Sabana Eneas (San Germán) (pop: 1,850) \| Show on map \| Quakes nearby 5 km (3 mi) ESE of Hormigueros (pop: 11,900) \| Show on map \| Quakes nearby 7 km (4 mi) NW of San German (San Germán) (pop: 12,100) \| Show on map \| Quakes nearby 8 km (5 mi) NE of Cabo Rojo (pop: 10,800) \| Show on map \| Quakes nearby 9 km (6 mi) NNW of Lajas (pop: 5,260) \| Show on map \| Quakes nearby 10 km (6 mi) SE of Mayaguez (Mayagüez) (pop: 78,600) \| Show on map \| Quakes nearby 12 km (8 mi) WSW of Maricao (pop: 1,170) \| Show on map \| Quakes nearby 14 km (9 mi) WNW of Sabana Grande (pop: 8,960) \| Show on map \| Quakes nearby 17 km (10 mi) SW of Las Marias (pop: 1,030) \| Show on map \| Quakes nearby 18 km (11 mi) SSE of Añasco (pop: 6,140) \| Show on map \| Quakes nearby 25 km (16 mi) SSW of San Sebastian (San Sebastián) (pop: 11,600) \| Show on map \| Quakes nearby 25 km (16 mi) NW of Guanica (Guánica) (pop: 9,220) \| Show on map \| Quakes nearby 27 km (17 mi) WNW of Yauco (pop: 20,300) \| Show on map \| Quakes nearby 29 km (18 mi) SW of Lares (pop: 7,180) \| Show on map \| Quakes nearby 29 km (18 mi) SE of Santa Rosa de Rincon (Rincón) (pop: 1,500) \| Show on map \| Quakes nearby 30 km (19 mi) S of Moca (pop: 4,960) \| Show on map \| Quakes nearby 110 km (68 mi) WSW of San Juan (pop: 418,100) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Few Clouds 26.1°C (79 F), humidity: 68%, wind: 4 m/s (7 kts) from N
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	14 km	4 Km N of Sabana Eneas, Puerto Rico	USGS
3.4	14 km	Puerto Rico: Mona Passage	RaspberryShake
3.1	10 km	Puerto Rico: Mona Passage	IRIS
3.4	14 km	PUERTO RICO	EMSC

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User reports for this quake (5)

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Puerto Rico (7.8 km WNW of epicenter) [Map] / Weak shaking (MMI III)

San German (7.5 km SE of epicenter) [Map] / Weak shaking (MMI III) : Dull sound - mild firm shake

Caban, Corrales Barrio, Aguadilla (36.8 km N of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Truck sound. Hear both waves (reported through our app)

Mayaguez, Mayagüez Barrio-Pueblo (12.3 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / very short : Movio y sonó algo ( creo que rejas ) (reported through our app)

Mayaguez, Puerto Rico / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : On 2nd floor in the mountain behind zoo

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