M 7.4 in Mexico on 23 Jun 2020 15:29 UTC

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: 7.4M
Depth: 23.31 Km
Event Date: 23 Jun 2020 15:29 UTC
23 Jun 2020 10:29 Local
Exposed Population: About 25000 people in MMI
650000 people within 100km
Source: NEIC us6000ah9t
Inserted at: 23 Jun 2020 15:48 UTC
INFORM Coping capacity of the alert score:
4.4 (Mexico)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0.1 0.3 0.3
us6000ah9t Scaled population (raster) 3.25 Max wave alert 0.38m  
  C1 shakemap -0.59 Max wave realtime 0.38m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 0.92      
Maximum expected impact using different data sources.
Click on image to zoom it.

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.

Tsunami affected locations

The maximum Wave height is  0.4m in Salina Cruz, Mexico. This height is estimated for 23-Jun-2020 16:39:13.

Alert Date (UTC) Name Country Wave height (m)
23-Jun-2020 16:39:13 Salina Cruz Mexico  0.4
23-Jun-2020 16:39:13 Salina Cruz- Oax. Mexico  0.4
23-Jun-2020 15:29:00 Ayutla Mexico  0.3
23-Jun-2020 15:29:00 Mirador Mexico  0.3
23-Jun-2020 16:59:75 Majada Villalobos Mexico  0.3
23-Jun-2020 16:43:36 Garrapateras Mexico  0.2
23-Jun-2020 15:29:00 Tangolunda Mexico  0.2
23-Jun-2020 17:53:48 Huajapan Mexico  0.2
23-Jun-2020 19:13:97 Cachimba Mexico  0.1
23-Jun-2020 16:53:81 Costa Rica Mexico  0.1
23-Jun-2020 18:01:02 El Roble Mexico  0.1
23-Jun-2020 15:29:00 Bajo de Arenal Mexico  0.1
23-Jun-2020 18:59:05 Arista Mexico  0.1
23-Jun-2020 17:55:49 Pesqueria Mexico  0.1
23-Jun-2020 17:01:49 Buenavista Mexico  0.1
23-Jun-2020 18:27:48 Solo Dios Mexico  0.1

See full locations list (RSS)


Initial conditions

Title: ""M 7.4, 11 km SSW of Santa María Zapotitlán, Mexico""

Fault parameters

  • Latitude: 16.035
  • Longitude: -95.909
  • Length: 79 km
  • Width: 22 km
  • Magnitude: 7.4 M

Okada parameters:

  • Slip: 2 m
  • Strike: 272 (geogr angle: north=0, south=180)
  • Dip: 11 degree
  • Rake: 90 degree
  • Depth: 23 km

Calculation parameters

  • Calculation space (lon/lat): -103.409, 8.535, -88.409, 23.535
  • Instead of Step -> use Cell size:1.25 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

  • Montecarlo:
    Tsunami Montecarlo simulation performed to this case, click here

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