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Mag. 4.0 earthquake - North Pacific Ocean, 105 km southeast of Salina Cruz, Oaxaca, Mexico, on Tuesday, Nov 28, 2023, at 01:46 am (GMT -6) -

A moderate magnitude 4.0 earthquake occurred under the sea 97 km (60 mi) from  Mexico in the early morning of Tuesday, Nov 28, 2023 at 1.46 am local time (GMT -6). The quake had a very shallow depth of 16.1 km (10 mi) and was not felt (or at least not reported so).

Mag. 4.0 earthquake - North Pacific Ocean, 105 km southeast of Salina Cruz, Oaxaca, Mexico, on Tuesday, Nov 28, 2023, at 01:46 am (GMT -6) Mag. 4.0 earthquake - North Pacific Ocean, 105 km southeast of Salina Cruz, Oaxaca, Mexico, on Tuesday, Nov 28, 2023, at 01:46 am (GMT -6)

Light magnitude 4.0 earthquake at 16 km depth

28 Nov 08:14 UTC: First to report: SSN after 28 minutes.

Earthquake details

Date & timeNov 28, 2023 07:46:40 UTC -
Local time at epicenterTuesday, Nov 28, 2023, at 01:46 am (GMT -6)
StatusPreliminary (automatic detection)
Magnitude4.0
Depth16.1 km
Epicenter latitude / longitude15.32°N / 94.77°W Mexico
Seismic antipode15.32°S / 85.23°E
Shaking intensityLight shaking near epicenter
Felt0 reports
Primary data sourceSSN (Servicio Sismológico Nacional)
Weather at epicenter at time of quakeOvercast Clouds 25.7°C (78 F), humidity: 83%, wind: 17 m/s (34 kts) from N
Estimated seismic energy released6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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 Santa Maria del Mar, a town with 771 inhabitants in Mexico, in 101 km (63 mi) distance north of the epicenter. People likely experienced very weak shaking there. In the capital of  Mexico, Mexico, 650 km (404 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
101 km (63 mi)
N of epicenter
Santa Maria del Mar
(pop: 771)
II: Very weak
Heroica Ciudad de Juchitan de Zaragoza, Oaxaca
102 km (63 mi)
N of epicenter
San Mateo del Mar
(pop: 5,730)
II: Very weak
Oaxaca
102 km (64 mi)
N of epicenter
San Francisco del Mar Viejo
(pop: 4,030)
II: Very weak
San Francisco del Mar, Oaxaca
105 km (66 mi)
NW of epicenter
Salina Cruz
(pop: 76,600)
II: Very weak
Oaxaca
108 km (67 mi)
NW of epicenter
El Morro
(pop: 2,630)
II: Very weak
Santo Domingo Tehuantepec, Oaxaca
112 km (69 mi)
N of epicenter
San Dionisio del Mar
(pop: 3,140)
II: Very weak
Oaxaca
116 km (72 mi)
N of epicenter
Santa Rosa
(pop: 2,490)
II: Very weak
San Blas Atempa, Oaxaca
117 km (73 mi)
NW of epicenter
Rincon Moreno
(pop: 1,020)
II: Very weak
Santo Domingo Tehuantepec, Oaxaca
118 km (73 mi)
N of epicenter
Las Amilpas
(pop: 8,800)
II: Very weak
San Dionisio del Mar, Oaxaca
119 km (74 mi)
N of epicenter
San Francisco Ixhuatan
(pop: 5,410)
II: Very weak
San Francisco Ixhuatan, Oaxaca
121 km (75 mi)
NE of epicenter
Emiliano Zapata
(pop: 3,350)
II: Very weak
Arriaga, Chiapas
122 km (76 mi)
NW of epicenter
Santiago Astata
(pop: 2,210)
II: Very weak
Oaxaca
123 km (76 mi)
NW of epicenter
San Blas Atempa
(pop: 12,000)
II: Very weak
Oaxaca
123 km (76 mi)
NW of epicenter
Santo Domingo Tehuantepec
(pop: 42,100)
II: Very weak
Oaxaca
126 km (78 mi)
NE of epicenter
Chahuites
(pop: 9,840)
II: Very weak
Oaxaca
126 km (79 mi)
NE of epicenter
Paredon
(pop: 6,130)
II: Very weak
Tonala, Chiapas
127 km (79 mi)
N of epicenter
Juchitan de Zaragoza
(pop: 74,800)
II: Very weak
Heroica Ciudad de Juchitan de Zaragoza, Oaxaca
128 km (80 mi)
N of epicenter
Union Hidalgo
(pop: 13,700)
II: Very weak
Oaxaca
130 km (81 mi)
NW of epicenter
El Coyul
(pop: 2,200)
II: Very weak
San Pedro Huamelula, Oaxaca
131 km (81 mi)
NE of epicenter
Doctor Belisario Dominguez (La Barra)
(pop: 1,040)
II: Very weak
Tonala, Chiapas
137 km (85 mi)
NE of epicenter
Espinal
(pop: 7,620)
II: Very weak
Chiapas
137 km (85 mi)
N of epicenter
Santo Domingo Zanatepec
(pop: 7,250)
II: Very weak
Oaxaca
137 km (85 mi)
NE of epicenter
Lazaro Cardenas
(pop: 1,170)
II: Very weak
Arriaga, Chiapas
138 km (86 mi)
NE of epicenter
Manuel Avila Camacho (Ponte Duro)
(pop: 1,780)
II: Very weak
Tonala, Chiapas
138 km (86 mi)
NE of epicenter
Arriaga
(pop: 24,400)
II: Very weak
Chiapas
138 km (86 mi)
N of epicenter
La Ventosa
(pop: 4,880)
II: Very weak
Heroica Ciudad de Juchitan de Zaragoza, Oaxaca
138 km (86 mi)
NE of epicenter
Tonala
(pop: 35,300)
II: Very weak
Tonala, Chiapas
139 km (87 mi)
N of epicenter
La Venta
(pop: 2,160)
II: Very weak
Heroica Ciudad de Juchitan de Zaragoza, Oaxaca
143 km (89 mi)
N of epicenter
Ixtepec
(pop: 25,400)
II: Very weak
Oaxaca
144 km (89 mi)
NW of epicenter
Santa Maria Jalapa del Marqués
(pop: 9,000)
II: Very weak
Santa Maria Jalapa del Marqués, Oaxaca
148 km (92 mi)
N of epicenter
Santiago
(pop: 2,550)
II: Very weak
Oaxaca
148 km (92 mi)
NE of epicenter
Nueva Tenochtitlan (Rizo de Oro)
(pop: 1,640)
II: Very weak
Cintalapa, Chiapas
149 km (93 mi)
NW of epicenter
Magdalena Tequisistlan
(pop: 3,830)
II: Very weak
Magdalena Tequisistlan, Oaxaca
153 km (95 mi)
NE of epicenter
Tiltepec
(pop: 2,010)
II: Very weak
Jiquipilas, Chiapas
155 km (96 mi)
W of epicenter
Crucecita
(pop: 15,100)
II: Very weak
Santa Maria Huatulco, Oaxaca
161 km (100 mi)
NW of epicenter
Merced del Potrero
(pop: 2,180)
II: Very weak
San Miguel del Puerto, Oaxaca
177 km (110 mi)
NE of epicenter
Lazaro Cardenas
(pop: 3,000)
II: Very weak
Cintalapa, Chiapas
189 km (117 mi)
NE of epicenter
Cintalapa de Figueroa
(pop: 42,500)
I: Not felt
Cintalapa, Chiapas
198 km (123 mi)
NE of epicenter
Benito Juarez
(pop: 3,570)
I: Not felt
Villaflores, Chiapas
650 km (404 mi)
NW of epicenter
Mexico
(pop: 12,294,200)
: Not felt
Mexico D.F.
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
2023-11-28
Epicenter Agency
4.0 16 km
10 mi
07:46:40 Mexico: 106 Km Al SURESTE De SALINA CRUZ, OAX SSN (Servicio Sismológico Nacional)
4.0 16 km
10 mi
07:46:40 Off Coast of Oaxaca, Mexico
0 km (0 mi) epicenter difference with SSN
EMSC (European-Mediterranean Seismological Centre)

Seismograms

Seismic station: COMITAN (CCIG/MX network) | Distance from quake: 301 km / 187 mi | Show on map | Station Info
Seismic station COMITAN: 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: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
Show more

Aftershocks for this quake

No aftershocks have been recorded so far. When aftershocks are detected, we will update this section.

What are aftershocks?


Larger earthquakes (above magnitude 5 or so) such as this one are usually followed by smaller ones known as aftershocks that occur in the same area during the days, weeks, months or even years after the main shock.
[More info]

What about this quake?


Based on its magnitude, the fault that was active during the quake likely ruptured beneath a surface of approx. 1 km2 (=0 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 2 km (1 mi).
[More info]


Recorded aftershocks, latest first (0 quake)

Date and Time GMTMag
Depth
DistanceRegionDetails
Nov 28, 2023 01:46 am (GMT -6)
14 weeks ago
4.0

16 km
0 km - This quakeNorth Pacific Ocean, 105 km SE of Salina Cruz, Oaxaca, Mexico
Main Shock (this quake)
More

Map of aftershocks

Earthquake statistics

Average number of earthquakes

Based on data from the past 10 years and our earthquake archive back to 1900, there are about 9,500 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):
  • Mag. 6 or higher: 0.14 quakes per year (or 1 quake every 7.1 years)
  • Mag. 5 or higher: 6.5 quakes per year
  • Mag. 4 or higher: 317 quakes per year (or 26.5 quakes per month)
  • Mag. 3 or higher: 935 quakes per year (or 78 quakes per month)
  • Mag. 2 or higher: 936 quakes per year (or 78 quakes per month)
The area where this quake occurred has a very high level of seismic activity. It has had at least 17 quakes above magnitude 6 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 5 to 10 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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Map to embed or share

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