M 7.7 in Mexico from 23 Jun 2020 15:29 UTC to 15:29

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 7.7M
Depth: 33 Km
Lat/Lon: 15.9 , -95.9
Event Date: 23 Jun 2020 15:29 UTC
23 Jun 2020 10:29 Local
Exposed Population: 590000 people within 100km
Source: NTWC at00qcdxol
Inserted at: 23 Jun 2020 15:42 UTC
INFORM Coping capacity of the alert score
4.4 (Mexico)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NTWC 0.7 0.9 0.9
at00qcdxol Scaled population (vector) 5.61 Max wave alert 0.95m  
  C1 earthquake 1 Max wave realtime 0.95m  
  C2 earthquake 0      
  Country Vulnerability -1      
  INFORM_normalised 0.92      
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1317280 0.8 23 Jun 2020 15:29 7.7M, 33km N/A 580 thousand (in 100km) 0.9m (at 01:12) 00:11 PTWC
1317281 0.9 23 Jun 2020 15:29 7.7M, 33km N/A 590 thousand (in 100km) 1m (at 01:14) 00:12 NTWC
1317285 0.3 23 Jun 2020 15:29 7.4M, 23.31km 6.92 30 thousand (in MMI>=VII) 0.4m (at 01:10) 00:19 NEIC
1317290 0.6 23 Jun 2020 15:29 7.4M, 26.25km 7.62 170 thousand (in MMI>=VII) 0.3m (at 00:00) 05:23 NEIC
1317865 0.5 23 Jun 2020 15:29 7.4M, 20km 7.55 120 thousand (in MMI>=VII) 0.6m (at 01:12) 3d 01:17 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Mexico , State of Oaxaca (population 3,329,574) . The nearest places are San Isidro Chacalapa, Ayutla, Mirador, Llano de Cal, Santa María, El Coyol, Tangolunda, Astata, San Miguel del Puerto, Candelaria, and Paxtlán.

Radius Population
100 km 590000 people
75 km 230000 people
50 km 91000 people
20 km 15000 people
10 km 3700 people
5 km <1000 people
2 km <1000 people

Affected Provinces

Region Province Country Population
Oaxaca Mexico 3.3 million people

Affected populated places

Name Region Province Country City class Population Distance
San Isidro Chacalapa Oaxaca Mexico Village - 3 km
Ayutla Oaxaca Mexico Village - 5 km
Mirador Oaxaca Mexico Village - 12 km
Llano de Cal Oaxaca Mexico Village - 13 km
Santa María Oaxaca Mexico Village - 17 km
El Coyol Oaxaca Mexico Village - 18 km
Tangolunda Oaxaca Mexico Village - 26 km
Astata Oaxaca Mexico Village - 27 km
San Miguel del Puerto Oaxaca Mexico Village - 28 km
Candelaria Oaxaca Mexico Village - 32 km
Borjas Oaxaca Mexico Village - 32 km
Garita Oaxaca Mexico Village - 34 km
Xanica Oaxaca Mexico Village - 35 km
Guivini Oaxaca Mexico Village - 38 km
Santa Catarina Oaxaca Mexico Village - 40 km
Chontecomatlan Oaxaca Mexico Village - 41 km
Santa María Ecatepec Oaxaca Mexico Village - 42 km
Calzada Oaxaca Mexico Village - 44 km
Tierra Blanca Oaxaca Mexico Village - 44 km
Bajo de Arenal Oaxaca Mexico Village - 46 km
Tlacolulita Oaxaca Mexico Village - 48 km
Garrapateras Oaxaca Mexico Village - 49 km
Santos Oaxaca Mexico Village - 50 km
Chapahuana Oaxaca Mexico Village - 51 km
Olvido Oaxaca Mexico Village - 52 km
Ozolotepec Oaxaca Mexico Village - 53 km
Tenango Oaxaca Mexico Village - 53 km
San Pedro Mixtepec Miahuatlán Oaxaca Mexico Village - 56 km
Ouieri Oaxaca Mexico Village - 57 km
Majada Villalobos Oaxaca Mexico Village - 57 km
El Portillo Oaxaca Mexico Village - 58 km
Loma Larga Oaxaca Mexico Village - 58 km
Copalita Oaxaca Mexico Village - 59 km
Arroyo Oaxaca Mexico Village - 59 km
San Bartolo Oaxaca Mexico Village - 60 km
Concepción Oaxaca Mexico Village - 62 km
Caja de Agua Oaxaca Mexico Village - 62 km
San Pedro el Alto Oaxaca Mexico Village - 62 km
Suchixtepec Oaxaca Mexico Village - 62 km
Pochutla Oaxaca Mexico City 13000 people 63 km
Magdalena Tequisistlan Oaxaca Mexico Village 3800 people 63 km
Guichina Oaxaca Mexico Village - 66 km
San Isidro Oaxaca Mexico Village - 66 km
San Juan Lajarcia Oaxaca Mexico Village - 67 km
Puerto Ángel Oaxaca Mexico Village - 68 km
Quiechapa Oaxaca Mexico Village - 68 km
Albino Zárate Oaxaca Mexico Village - 69 km
Paxtlán Oaxaca Mexico Village - 70 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Bahias de Huatulco International HUX 143 Civ. Paved Yes 8800 41 km
Pochutla PUH unknown 0 65 km
Salina Cruz SCX 23 0 82 km

Ports

Name LOCODE Country Distance
Puerto Angel Mexico 72 km
Salina Cruz MXSCX Mexico 80 km

Dams

Reservoir Dam Name River Year Distance
Presidente Benito Juarez Tehuantepec 1961 81 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.