M 7 in Venezuela from 21 Aug 2018 21:31 UTC to 21:31

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: 7.0M
Depth: 87 Km
Event Date: 21 Aug 2018 21:31 UTC
21 Aug 2018 17:31 Local
Exposed Population: 1090000 people within 100km
Source: NTWC     at00pdtygt
Inserted at: 21 Aug 2018 21:43 UTC
INFORM Coping capacity of the alert score:
4.3 (Venezuela)
INFORM Coping capacity of the affected contries: Venezuela= 4.3; Trinidad & Tobago= 3.6

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NTWC     0.9 0 0.9
at00pdtygt Scaled population (vector) 5.69 Max wave alert 0m  
  C1 earthquake 1 Max wave realtime 0m  
  C2 earthquake 0      
  Country Vulnerability 0      
  INFORM_normalised 0.9      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1225282 1.8 21 Aug 2018 21:31 7.3M, 10km N/A 1.2 million (in 100km) 0m (at 00:00) 00:07 GEOFON
1225286 0.9 21 Aug 2018 21:31 7M, 87km N/A 1.1 million (in 100km) 0m (at 00:00) 00:11 NTWC    
1225292 1.2 21 Aug 2018 21:31 7.3M, 123.18km 7.12 60 thousand (in MMI>=VII) 0m (at 00:00) 00:19 NEIC
1225398 0.5 21 Aug 2018 21:31 7.3M, 154.27km 6.55 108 (in MMI>=VII) 0m (at 00:00) 19:11 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

Alert Date (UTC) Name Country Wave height (m)

See full locations list (RSS)


Initial conditions

Title: "22km SW of Irapa"

Fault parameters

  • Latitude: 10.4
  • Longitude: -62.7
  • Length: 50 km
  • Width: 14 km
  • Magnitude: 7 M

Okada parameters:

  • Slip: 1.3 m
  • Strike: 271 (geogr angle: north=0, south=180)
  • Dip: 15 degree
  • Rake: 90 degree
  • Depth: 87 km

Calculation parameters

  • Calculation space (lon/lat): -67.2, 5.9, -58.2, 14.9
  • Instead of Step -> use Cell size:.75 minutes

Sea Level

More information

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

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