M 6.4 in Indonesia on 28 Jul 2018 22:47 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

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

Earthquake Magnitude: 6.4M
Depth: 7.49 Km
Event Date: 28 Jul 2018 22:47 UTC
29 Jul 2018 06:47 Local
Exposed Population: 140000 people in MMI
3680000 people within 100km
Source: NEIC us2000ggbs
Inserted at: 28 Jul 2018 23:04 UTC
INFORM Coping capacity of the alert score:
4.8 (Indonesia)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 1.5 0 1.5
us2000ggbs Scaled population (vector) 4.19 Max wave scenario 0m  
  C1 shakemap -1.73 Max wave realtime 0.05m  
  C2 shakemap 0.79      
  Country Vulnerability 0      
  INFORM_normalised 0.96      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1221687 2.4 28 Jul 2018 22:47 6.5M, 14km N/A 3.7 million (in 100km) 0m (at 00:00) 00:06 GEOFON
1221690 1.5 28 Jul 2018 22:47 6.4M, 7.49km 7.34 150 thousand (in MMI>=VII) 0.1m (at 00:05) 00:16 NEIC
1221723 1.7 28 Jul 2018 22:47 6.4M, 6.39km 7.69 160 thousand (in MMI>=VII) 0m (at 00:05) 06:50 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  0.0m in Bayan, Indonesia. This height is estimated for 28-Jul-2018 22:52:84.

Alert Date (UTC) Name Country Wave height (m)
28-Jul-2018 22:52:84 Bayan Indonesia  0.0
28-Jul-2018 22:54:83 Lepeloang Indonesia  0.0
28-Jul-2018 22:53:01 Desa_Anjar Indonesia  0.0

See full locations list (RSS)


Initial conditions

Title: "1km SW of Lelongken"

Fault parameters

  • Latitude: -8.332
  • Longitude: 116.489
  • Length: 25 km
  • Width: 7 km
  • Magnitude: 6.4 M

Okada parameters:

  • Slip: .6 m
  • Strike: 271 (geogr angle: north=0, south=180)
  • Dip: 12 degree
  • Rake: 90 degree
  • Depth: 8 km

Calculation parameters

  • Calculation space (lon/lat): 114.989, -9.832, 117.989, -6.832
  • Instead of Step -> use Cell size:.25 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.