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Mag. 4.0 earthquake - 41 km southeast of Ciudad Altamirano, Guerrero, Mexico, on Tuesday, Nov 28, 2023, at 10:37 am (Mexico City time) -

A moderate magnitude 4.0 earthquake hit 41 km (26 mi) away from Ciudad Altamirano, Guerrero,  Mexico, in the morning of Tuesday, Nov 28, 2023 at 10.37 am local time (America/Mexico City GMT -6). The quake had a shallow depth of 61 km (38 mi) and was not felt (or at least not reported so).

Mag. 4.0 earthquake - 41 km southeast of Ciudad Altamirano, Guerrero, Mexico, on Tuesday, Nov 28, 2023, at 10:37 am (Mexico City time) Mag. 4.0 earthquake - 41 km southeast of Ciudad Altamirano, Guerrero, Mexico, on Tuesday, Nov 28, 2023, at 10:37 am (Mexico City time)

Light magnitude 4.0 earthquake at 61 km depth

28 Nov 16:50 UTC: First to report: EMSC after 13 minutes.

Earthquake details

Date & timeNov 28, 2023 16:37:15 UTC -
Local time at epicenterTuesday, Nov 28, 2023, at 10:37 am (America/Mexico City GMT -6)
StatusPreliminary (automatic detection)
Magnitude4.0
Depth60.7 km
Epicenter latitude / longitude18.02°N / 100.51°W Ajuchitlan del Progreso, Guerrero, Mexico
Seismic antipode18.02°S / 79.49°E
Shaking intensityVery weak shaking
Felt0 reports
Primary data sourceEMSC (European-Mediterranean Seismological Centre)
Nearest volcanoNevado de Toluca (145 km / 90 mi)
Weather at epicenter at time of quakeOvercast Clouds 27.5°C (82 F), humidity: 62%, wind: 1 m/s (2 kts) from NE
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 Ciudad Altamirano, a town with 25,000 inhabitants in Mexico, in 41 km (26 mi) distance northwest of the epicenter. People likely experienced very weak shaking there. Many smaller towns and villages are located closer to the epicenter and might have experienced stronger shaking. In the capital of  Mexico, Mexico, 214 km (133 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
4 km (2 mi)
E of epicenter
Gomez Farias (El Limon)
(pop: 226)
II: Very weak
Ajuchitlan del Progreso, Guerrero
15 km (9 mi)
N of epicenter
Ajuchitlan
(pop: 6,330)
II: Very weak
Ajuchitlan del Progreso, Guerrero
15 km (9 mi)
E of epicenter
Las Mesas I
(pop: 243)
II: Very weak
San Miguel Totolapan, Guerrero
17 km (11 mi)
W of epicenter
La Hacienda Santa Fe
(pop: 265)
II: Very weak
Ajuchitlan del Progreso, Guerrero
20 km (13 mi)
S of epicenter
El Zapotal
(pop: 144)
II: Very weak
San Miguel Totolapan, Guerrero
24 km (15 mi)
NE of epicenter
El Terrero
(pop: 1,490)
II: Very weak
San Miguel Totolapan, Guerrero
25 km (15 mi)
N of epicenter
Tlapehuala
(pop: 9,330)
II: Very weak
Guerrero
25 km (16 mi)
SE of epicenter
La Mesa (Las Mesas)
(pop: 276)
II: Very weak
San Miguel Totolapan, Guerrero
31 km (19 mi)
NE of epicenter
El Escondido
(pop: 1,290)
II: Very weak
Arcelia, Guerrero
31 km (19 mi)
NE of epicenter
San José Poliutla
(pop: 3,090)
II: Very weak
Tlapehuala, Guerrero
32 km (20 mi)
E of epicenter
Pericotepec
(pop: 515)
II: Very weak
San Miguel Totolapan, Guerrero
32 km (20 mi)
NW of epicenter
San Juan de la Cruz
(pop: 616)
II: Very weak
Coyuca de Catalan, Guerrero
34 km (21 mi)
NE of epicenter
Temixco
(pop: 314)
II: Very weak
Arcelia, Guerrero
36 km (22 mi)
S of epicenter
Pocitos del Balcon
(pop: 396)
II: Very weak
Ajuchitlan del Progreso, Guerrero
38 km (24 mi)
N of epicenter
Chacamero Grande
(pop: 389)
II: Very weak
Pungarabato, Guerrero
39 km (24 mi)
E of epicenter
San Pedro Pezuapan
(pop: 246)
II: Very weak
San Miguel Totolapan, Guerrero
41 km (26 mi)
NE of epicenter
Arcelia
(pop: 18,700)
II: Very weak
Guerrero
41 km (26 mi)
NW of epicenter
Ciudad Altamirano
(pop: 25,200)
II: Very weak
Pungarabato, Guerrero
43 km (27 mi)
SE of epicenter
Yolotla
(pop: 284)
II: Very weak
San Miguel Totolapan, Guerrero
44 km (27 mi)
N of epicenter
Tlalchapa
(pop: 4,070)
II: Very weak
Guerrero
46 km (28 mi)
E of epicenter
Tetela del Rio
(pop: 439)
II: Very weak
General Heliodoro Castillo, Guerrero
48 km (30 mi)
NW of epicenter
Paso de Arena
(pop: 2,260)
II: Very weak
Coyuca de Catalan, Guerrero
50 km (31 mi)
N of epicenter
Cutzamala de Pinzon
(pop: 4,900)
II: Very weak
Guerrero
62 km (38 mi)
SE of epicenter
Tlacotepec
(pop: 6,850)
II: Very weak
General Heliodoro Castillo, Guerrero
62 km (39 mi)
E of epicenter
Apaxtla de Castrejon
(pop: 7,040)
II: Very weak
Apaxtla, Guerrero
64 km (40 mi)
NE of epicenter
Acapetlahuaya
(pop: 1,620)
II: Very weak
General Canuto A. Neri, Guerrero
68 km (42 mi)
SE of epicenter
Puerto Viejo
(pop: 1,150)
II: Very weak
General Heliodoro Castillo, Guerrero
70 km (43 mi)
NW of epicenter
San Lucas
(pop: 3,090)
II: Very weak
Michoacan
71 km (44 mi)
NW of epicenter
Zirandaro de los Chavez
(pop: 3,250)
II: Very weak
Zirandaro, Guerrero
73 km (45 mi)
E of epicenter
Cuetzala del Progreso
(pop: 2,320)
II: Very weak
Guerrero
73 km (45 mi)
N of epicenter
Zacapuato
(pop: 1,860)
II: Very weak
Cutzamala de Pinzon, Guerrero
76 km (47 mi)
E of epicenter
Los Sauces
(pop: 1,140)
II: Very weak
Teloloapan, Guerrero
77 km (48 mi)
N of epicenter
Palmar Chico
(pop: 3,130)
II: Very weak
Amatepec, Mexico
78 km (48 mi)
NE of epicenter
Teloloapan
(pop: 23,500)
II: Very weak
Guerrero
79 km (49 mi)
NW of epicenter
Huetamo de Nuñez
(pop: 21,900)
II: Very weak
Huetamo, Michoacan
79 km (49 mi)
E of epicenter
Nuevo Balsas
(pop: 1,710)
II: Very weak
Cocula Municipality, Guerrero
85 km (53 mi)
W of epicenter
Guayameo
(pop: 1,630)
II: Very weak
Zirandaro, Guerrero
96 km (59 mi)
SW of epicenter
Papanoa
(pop: 3,510)
II: Very weak
Técpan de Galeana, Guerrero
118 km (74 mi)
SE of epicenter
Chilpancingo de los Bravo
(pop: 187,300)
II: Very weak
Guerrero
214 km (133 mi)
NE of epicenter
Mexico
(pop: 12,294,200)
I: 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 61 km
38 mi
16:37:15 Guerrero, Mexico EMSC (European-Mediterranean Seismological Centre)
4.0 61 km
38 mi
16:37:15 41 Km Al SUROESTE De ARCELIA, GRO
0 km (0 mi) epicenter difference with EMSC
SSN (Servicio Sismológico Nacional)

Seismograms

Seismic station: Morelia, Mich, MX (MOIG/MX network) | Distance from quake: 196 km / 122 mi | Show on map | Station Info
Seismic station Morelia, Mich, MX: 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 10:37 am (Mexico City)
14 weeks ago
4.0

61 km
0 km - This quake41 km SE of Ciudad Altamirano, Guerrero, 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 2,600 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):
  • Mag. 7 or higher: 0.02 quakes per year (or 1 quake every 41.7 years)
  • Mag. 6 or higher: 0.17 quakes per year (or 1 quake every 5.7 years)
  • Mag. 5 or higher: 1.2 quakes per year
  • Mag. 4 or higher: 39.3 quakes per year
  • Mag. 3 or higher: 253 quakes per year (or 21.1 quakes per month)
  • Mag. 2 or higher: 255 quakes per year (or 21.3 quakes per month)
The area where this quake occurred has a very high level of seismic activity. It has had at least 3 quakes above magnitude 7 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 40 to 45 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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