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Mag. 3.9 earthquake - South Pacific Ocean, 59 km southwest of Barranca, Lima region, Peru, on Monday, Dec 4, 2023, at 08:12 pm (GMT -5) -

A moderate magnitude 3.9 earthquake occurred under the sea near the coast of  Peru in the evening of Monday, Dec 4, 2023 at 8.12 pm local time (GMT -5). The quake had a very shallow depth of 33 km (21 mi) and was not felt (or at least not reported so).

Mag. 3.9 earthquake - South Pacific Ocean, 59 km southwest of Barranca, Lima region, Peru, on Monday, Dec 4, 2023, at 08:12 pm (GMT -5) Mag. 3.9 earthquake - South Pacific Ocean, 59 km southwest of Barranca, Lima region, Peru, on Monday, Dec 4, 2023, at 08:12 pm (GMT -5)

Light magnitude 3.9 earthquake at 33 km depth

5 Dec 01:22 UTC: First to report: EMSC after 10 minutes.

Earthquake details

Date & timeDec 5, 2023 01:12:32 UTC -
Local time at epicenterMonday, Dec 4, 2023, at 08:12 pm (GMT -5)
StatusPreliminary (automatic detection)
Magnitude3.9
Depth33.0 km
Epicenter latitude / longitude10.97°S / 78.26°W Peru
Seismic antipode10.97°N / 101.74°E Thailand
Shaking intensityWeak shaking near epicenter
Felt0 reports
Primary data sourceEMSC (European-Mediterranean Seismological Centre)
Weather at epicenter at time of quakeOvercast Clouds 19.6°C (67 F), humidity: 87%, wind: 8 m/s (15 kts) from SSE
Estimated seismic energy released4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) | about seismic energy
Interactive map
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Nearby places

The closest larger town where the quake might have been felt is Barranca, a town with 46,000 inhabitants in Peru, in 59 km (37 mi) distance northeast of the epicenter. People likely experienced very weak shaking there. Several smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of  Peru, Lima, 180 km (112 mi) away from the epicenter, the earthquake could not be felt.
The following table shows some of the places that might have been affected (or not) by the shaking.
Distance Place Max. shaking intensity(*) Region Country
58 km (36 mi)
NE of epicenter
Paramonga
(pop: 27,600)
II: Very weak
Barranca, Lima region
59 km (37 mi)
NE of epicenter
Barranca
(pop: 46,300)
II: Very weak
Lima region
59 km (37 mi)
E of epicenter
Puerto Supe
(pop: 11,500)
II: Very weak
Barranca, Lima region
60 km (37 mi)
NE of epicenter
Pativilca
(pop: 13,600)
II: Very weak
Barranca, Lima region
63 km (39 mi)
E of epicenter
Supe
(pop: 13,700)
II: Very weak
Barranca, Lima region
71 km (44 mi)
NE of epicenter
Gramadal
(pop: 31)
II: Very weak
Huarmey, Ancash
73 km (45 mi)
E of epicenter
Huaura
(pop: 20,700)
II: Very weak
Lima region
73 km (45 mi)
E of epicenter
Huaura
(pop: 20,700)
II: Very weak
Lima region
77 km (48 mi)
NE of epicenter
Huaricanga
(pop: 167)
II: Very weak
Barranca, Lima region
83 km (52 mi)
SE of epicenter
Salinas
(pop: 17)
II: Very weak
Huaura Province, Lima region
83 km (52 mi)
E of epicenter
Caral
(pop: 628)
II: Very weak
Barranca, Lima region
87 km (54 mi)
NE of epicenter
Cochas
(pop: 211)
II: Very weak
Ocros, Ancash
88 km (55 mi)
E of epicenter
Caldera
(pop: 537)
II: Very weak
Huaura Province, Lima region
93 km (58 mi)
E of epicenter
La Union
(pop: 31)
II: Very weak
Huaura Province, Lima region
101 km (63 mi)
NE of epicenter
Llamachupan
(pop: 250)
II: Very weak
Ocros, Ancash
101 km (63 mi)
N of epicenter
Huarmey
(pop: 16,200)
II: Very weak
Ancash
103 km (64 mi)
E of epicenter
Los Angeles
(pop: 85)
II: Very weak
Huaura Province, Lima region
104 km (65 mi)
E of epicenter
Arcata
(pop: 63)
II: Very weak
Huaura Province, Lima region
108 km (67 mi)
E of epicenter
Hacienda Santa Rosa
(pop: 137)
II: Very weak
Huaura Province, Lima region
111 km (69 mi)
NE of epicenter
Llama Rumi
(pop: 138)
II: Very weak
Provincia de Recuay, Ancash
114 km (71 mi)
NE of epicenter
Congas
(pop: 607)
II: Very weak
Ocros, Ancash
114 km (71 mi)
NE of epicenter
Santiago de Chilcas
(pop: 350)
II: Very weak
Ocros, Ancash
118 km (73 mi)
E of epicenter
Sayan
(pop: 6,200)
II: Very weak
Huaura Province, Lima region
118 km (73 mi)
SE of epicenter
San Cayetano
(pop: 359)
II: Very weak
Provincia de Huaral, Lima region
122 km (76 mi)
NE of epicenter
Llacllin
(pop: 723)
II: Very weak
Provincia de Recuay, Ancash
122 km (76 mi)
N of epicenter
Molino
(pop: 277)
II: Very weak
Huarmey, Ancash
127 km (79 mi)
SE of epicenter
Chancay
(pop: 27,000)
II: Very weak
Provincia de Huaral, Lima region
129 km (80 mi)
SE of epicenter
Huaral
(pop: 62,200)
II: Very weak
Lima region
134 km (83 mi)
NE of epicenter
Pampas Chico
(pop: 248)
II: Very weak
Provincia de Recuay, Ancash
138 km (86 mi)
NE of epicenter
Canis
(pop: 662)
II: Very weak
Provincia de Bolognesi, Ancash
142 km (88 mi)
E of epicenter
Cajamarquilla
(pop: 471)
II: Very weak
Provincia de Cajatambo, Lima region
150 km (93 mi)
NE of epicenter
Aija
(pop: 843)
II: Very weak
Ancash
154 km (95 mi)
NE of epicenter
Pacllan
(pop: 892)
II: Very weak
Provincia de Bolognesi, Ancash
173 km (108 mi)
SE of epicenter
Callao
(pop: 813,300)
I: Not felt
Callao
175 km (109 mi)
SE of epicenter
Carmen De La Legua Reynoso
(pop: 41,900)
I: Not felt
Callao, Callao
179 km (111 mi)
SE of epicenter
Breña
(pop: 81,900)
I: Not felt
Lima, Lima region
180 km (112 mi)
SE of epicenter
Lima
(pop: 7,737,000)
I: Not felt
Lima Province
180 km (112 mi)
SE of epicenter
Jesus Maria
(pop: 66,200)
I: Not felt
Lima, Lima region
182 km (113 mi)
SE of epicenter
San Isidro
(pop: 68,300)
I: Not felt
Lima, Lima region
185 km (115 mi)
SE of epicenter
San Francisco De Borja
(pop: 105,100)
I: Not felt
Lima, Lima region
Notes:
(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.

User-reports for this quake

There are no user reports for this quake yet.

If you felt it, be the first to report it!
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.

Compare Quake Data

Data for the same earthquake as reported by different agencies

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 Time GMT
2023-12-5
Epicenter Agency
3.9 33 km
21 mi
01:12:32 Near Coast Of Central Peru EMSC (European-Mediterranean Seismological Centre)

Earthquake statistics

Average number of earthquakes

Based on data from the past 10 years and our earthquake archive back to 1900, there are about 141 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):
  • Mag. 8 or higher: 0.02 quakes per year (or 1 quake every 50 years)
  • Mag. 7 or higher: 0.02 quakes per year (or 1 quake every 50 years)
  • Mag. 6 or higher: 0.08 quakes per year (or 1 quake every 12.5 years)
  • Mag. 5 or higher: 0.88 quakes per year (or 1 quake every 1.1 years)
  • Mag. 4 or higher: 11.9 quakes per year
  • Mag. 3 or higher: 14 quakes per year
  • Mag. 2 or higher: 14 quakes per year
The area where this quake occurred has a very high level of seismic activity. It has had at least 2 quakes above magnitude 8 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.

Number of quakes per year

Previous quakes in the same area of this earthquake

Map of earlier quakes in the area of this quake

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