M 4.9 in Indonesia on 20 Sep 2021 23:56 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: 4.9M
Depth: 53.17 Km
Lat/Lon: 1.8225 , 125.8916
Event Date: 20 Sep 2021 23:56 UTC
21 Sep 2021 07:56 Local
Exposed Population:
70 thousand in 100km
Source: NEIC us7000fd1i
Inserted at: 21 Sep 2021 00:26 UTC
INFORM Coping capacity of the alert score
4.8 (Indonesia)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000fd1i Scaled population (vector) 3.9  
  C1 earthquake 1.54  
  C2 earthquake -0.64  
  Country Vulnerability 0.09  
  INFORM_normalised 0.96  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1397745 0 20 Sep 2021 23:56 4.9M, 53.17km N/A 70 thousand (in 100km) 00:29 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 Indonesia , Province of Sulawesi Utara (population 2,665,773) . The nearest places are and Buang.

Radius Population
100 km 72000 people
75 km 1800 people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Sulawesi Utara Indonesia 2.7 million people
Maluku Indonesia 2 million people
Sulawesi Tengah Indonesia 1.8 million people
Southern Mindanao Philippines 4.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Buang Sulawesi Utara Indonesia Village - 67 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
Sangir SAE unknown 0 76 km

Ports

Name LOCODE Country Distance
Bitung IDBIT Indonesia 87 km

More information

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