M 4.5 in Indonesia on 23 Feb 2021 16:19 UTC
EQ parameters

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: 4.5M
Depth: 183.99 Km
Lat/Lon: 4.5559 , 125.7489
Event Date: 23 Feb 2021 16:19 UTC
24 Feb 2021 00:19 Local
Exposed Population:
About 13000 people within 100km
Source: NEIC us6000dkfu
Inserted at: 23 Feb 2021 16:51 UTC
INFORM Coping capacity of the alert score: 4.8 (Indonesia)


For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us6000dkfu Scaled population (vector) 3.14  
  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
1360208 0 23 Feb 2021 16:19 4.5M, 183.99km N/A 10 thousand (in 100km) 00:32 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) .

Radius Population
100 km 13000 people
75 km no 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 2.6 million people
Southern Mindanao Philippines 4.4 million people
Central Mindanao Philippines 3.1 million people
Northern Mindanao Philippines 3.5 million people
Maluku Indonesia 1.9 million people
Western Mindanao Philippines 3.1 million people

Critical infrastructure

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


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Naha NAH 5 0 100 km

More information

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