Moderate mag. 4.8 earthquake - Caribbean Sea, 7.9 km southeast of Guanica, Puerto Rico, on Thursday, Dec 24, 2020 12:56 pm (GMT -4) -

Moderate mag. 4.8 earthquake - Caribbean Sea, 7.9 km southeast of Guanica, Puerto Rico, on Thursday, Dec 24, 2020 12:56 pm (GMT -4)

Moderate magnitude 4.8 earthquake at 10 km depth

24 Dec 17:02 UTC: First to report: USGS after 5 minutes.
24 Dec 17:12: Hypocenter depth recalculated from 5.0 to 10.0 km (from 3.1 to 6.2 mi). Epicenter location corrected by 14 km (8.6 mi) towards ENE.
24 Dec 18:12: Magnitude recalculated from 4.9 to 4.8. Epicenter location corrected by 15 km (9.4 mi) towards W.
Update Thu, 24 Dec 2020, 17:06
Magnitude 4.9 earthquake strikes near Guanica, Puerto Rico
4.9 quake 24 Dec 12:56 pm (GMT -4)
4.9 quake 24 Dec 12:56 pm (GMT -4)
The United States Geological Survey (USGS) reported a magnitude 4.9 quake in Puerto Rico near Guanica, Guánica Barrio-Pueblo, only 9 minutes ago. The earthquake hit around noon on Thursday 24 December 2020 at 12:56 pm local time at a very shallow depth of 5 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Indios (pop. 1,700) located 12 km from the epicenter, Maria Antonia (pop. 1,500) 12 km away, Guanica (pop. 9,200) 12 km away, Fuig (pop. 1,200) 14 km away, Palomas (pop. 2,300) 15 km away, Guayanilla (pop. 5,200) 15 km away, Yauco (pop. 20,300) 16 km away, and Ponce (pop. 152,600) 26 km away, the quake should have been felt as light shaking.
Weak shaking might have been felt in Bayamon (pop. 203,500) located 91 km from the epicenter, and San Juan (pop. 418,100) 100 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
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Earthquake data

Date & time: Dec 24, 2020 16:56:39 UTC -
Local time at epicenter: Thursday, Dec 24, 2020 12:56 pm (GMT -4)
Magnitude: 4.8
Depth: 10.0 km
Epicenter latitude / longitude: 17.9331°N / 66.8451°W (Caribbean Sea, Puerto Rico)
Antipode: 17.933°S / 113.155°E
Nearby towns and cities:
7 km (4 mi) SE of Maria Antonia (pop: 1,480) --> See nearby quakes!
8 km (5 mi) ESE of Guanica (pop: 9,220) --> See nearby quakes!
11 km (7 mi) SSW of Guayanilla (pop: 5,210) --> See nearby quakes!
11 km (7 mi) S of Yauco (pop: 20,300) --> See nearby quakes!
19 km (12 mi) SW of Penuelas (Peñuelas) (pop: 6,850) --> See nearby quakes!
20 km (13 mi) SE of Sabana Grande (pop: 8,960) --> See nearby quakes!
25 km (15 mi) WSW of Ponce (pop: 152,600) --> See nearby quakes!
26 km (16 mi) ESE of Lajas (pop: 5,260) --> See nearby quakes!
27 km (17 mi) SE of San German (San Germán) (pop: 12,100) --> See nearby quakes!
29 km (18 mi) SSW of Adjuntas (pop: 5,080) --> See nearby quakes!
65 km (41 mi) WSW of Aibonito (pop: 8,950) --> See nearby quakes!
78 km (48 mi) W of Guayama (pop: 21,600) --> See nearby quakes!
89 km (56 mi) SW of Bayamon (pop: 203,500) --> See nearby quakes!
95 km (59 mi) SW of Cataño (Catano) (pop: 28,100) --> See nearby quakes!
98 km (61 mi) SW of San Juan (pop: 418,100) --> See nearby quakes!
51 km (31 mi) SW of Puerto Rico Island (pop: 3,474,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 28.7°C (84 F), humidity: 58%, wind: 2 m/s (3 kts) from ESE
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1 x 1012 joules (278 megawatt hours, equivalent to 239 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.
Mag.DepthLocationSource
4.810 km- 6 km SE of Maria Antonia, Puerto RicoUSGS
4.710 kmPuerto Rico RegionGFZ
4.910 kmPUERTO RICO REGIONEMSC

User reports for this quake (45)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Manati PR (66.9 km NNE of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s : Side to side movement. Like 3 to 4 seconds. Very noticeable. | 3 users found this interesting. (reported through our app)  
Boquerón Bay / Very weak shaking (MMI II) / 5-10 s : 5 th floor if Boquerón Bay Beach Villas. Side to side shaking of room. Christmas tree was gently swaying. hanging lights moved gentally. no noise | One user found this interesting.  
NW Yauco PR / Moderate shaking (MMI V) / rattling, vibrating : This lasted a LONG time with increasing STRONG vibration and deep rumbling sound. | 2 users found this interesting.  
Arecibo (57.7 km N of epicenter) [Map] / Moderate shaking (MMI V) : Structure moved, Table and couch shook for 4 seconds. | One user found this interesting.  
Bo.Jimenez km1.2 Río Grande Puerto Rico (118.9 km ENE of epicenter) [Map] / Very weak shaking (MMI II) / very short : Alert | One user found this interesting. (reported through our app)  
San Sebastián, PR / Weak shaking (MMI III) / rattling, vibrating / very short : Sitting at the kitchen table and it vibrated slightly. Wasn’t sure if I imagined it or not | One user found this interesting.  
Jayuya,Puerto Rico / not felt : It was short,it did shake my bed | One user found this interesting.  
Almácigo bajo Yauco / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s : La cama, las paredes y los almarios se movieron. | One user found this interesting.  
Cayey, PR , US (77.9 km ENE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
Comunas, Playa Barrio, Yabucoa (111.7 km E of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s (reported through our app)
Barceloneta, PR (67 km NNE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
Ponce, Segundo Barrio (28.6 km ENE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Santo Domingo, Peñuelas (20.5 km NNE of epicenter) [Map] / Moderate shaking (MMI V) / 2-5 s
Mayaguez (44.3 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s
Bayamon, Bayamón Barrio-Pueblo (86.1 km NE of epicenter) [Map] / Light shaking (MMI IV) / 20-30 s (reported through our app)
Pajaros, Mucarabones Barrio, Toa Alta (82.3 km NE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Playita Cortada, Descalabrado Barrio, Santa Isabel (43.8 km E of epicenter) [Map] / not felt
Vega Baja (77.9 km NE of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 1-2 s
Rio canas abajo (42.4 km ENE of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
Rio Grande (118.3 km ENE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
San Sebastián (48.2 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 5-10 s
Mayaguez (44.3 km NW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s
Pajaros, Mucarabones Barrio, Toa Alta (83.6 km NE of epicenter) [Map] / Light shaking (MMI IV) / 1-2 s (reported through our app)
Rio Grande (116.2 km ENE of epicenter) [Map] / not felt (reported through our app)
Ponce, Segundo Barrio (24 km ENE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
URB. PORTA COELI SAN GERMAN PR (25.9 km NW of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Guayanilla (9.7 km NNE of epicenter) [Map] / Moderate shaking (MMI V) / vibration and rolling / 1-2 s (reported through our app)
Puerto Rico, San Juan Antiguo Barrio, San Juan (100.7 km NE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Morovis (61.9 km NE of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging (reported through our app)
San Sebastian (47.7 km NNW of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
Guaynabo (93.8 km ENE of epicenter) [Map] / Very weak shaking (MMI II) (reported through our app)
Ponce / Light shaking (MMI IV) / 15-20 s
00791 / Very weak shaking (MMI II) / 15-20 s
Ponce / Light shaking (MMI IV) / 15-20 s
San Sebastian / Light shaking (MMI IV) / very short
Quebradillas / Weak shaking (MMI III) / single lateral shake
Ponce / Light shaking (MMI IV) / vibration and rolling / 2-5 s
Ponce PR / Moderate shaking (MMI V)
Orocovis Puerto Rico / Light shaking (MMI IV) / 2-5 s
Isabela, PR / Very weak shaking (MMI II)
Aeecibo / Strong shaking (MMI VI) / single lateral shake / very short
lares, Puerto Rico / Moderate shaking (MMI V) / single lateral shake / 10-15 s
Cabo Rojo, Puerto Rico / Moderate shaking (MMI V)
Mayaguez / Moderate shaking (MMI V)
Manati, Puerto Rico / Moderate shaking (MMI V)
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