M 6.6 in Indonesia on 27 Nov 2025 04:56 UTC

Event summary

This earthquake can have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID EQ 1512141
Earthquake Magnitude: 6.6M
Depth: 25.4 Km
Lat/Lon: 2.6921 , 96.0266
Event Date: 27 Nov 2025 04:56 UTC
27 Nov 2025 11:56 Local
Exposed Population: 50 thousand in MMI VI
Inserted at: 27 Nov 2025 05:08 UTC
INFORM Coping capacity:
4.8 (Indonesia)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0 0
us7000re2g Scaled population (raster) 1.86 Max wave alert 0.06m  
  C1 shakemap -1.73 Max wave realtime 0.06m  
  C2 shakemap 0.79      
  Country Vulnerability 0      
  INFORM_normalised 0.96      
Maximum expected impact using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Indonesia - Earthquake (ECHO 02 Dec 2025)Thu, 27 Nov 2025 10:59

  • A 6.6 M earthquake at a depth of 25.4 km struck Simeulue island off the western coast of Sumatra, Indonesia, on 27 November at 4:56 UTC (11:56 local time). The epicentre was located 45 km west-north-west of Sinabang town. One aftershock of 4.8 M at the depth of 19 km was recorded further south, 85 km W of Gunungsitoli, Nias island, closely after the main event.
  • USGS PAGER estimates that up to 57,000 people were exposed to strong shaking, while 41,000 people were exposed to moderate shaking.
  • Media report no immediate casualties or damage; no tsunami warning has been issued.
Detailed event map. European Union, 2025. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

Militaries assist Asia flood victims as toll nears 1,000 12/1/2025 4:54:00 AM.

People wade through a flooded street after heavy rainfall in Wellampitiya on the outskirts of Colombo. Sri Lanka and Indonesia deployed military personnel to help victims of devastating flooding that has killed nearly 1,000 people across f
...(more)
Asian militaries mobilise as floods across Indonesia, Sri Lanka, Thail.. 12/1/2025 4:49:00 AM.

PADANG, Dec 1 — Sri Lanka and Indonesia deployed military personnel on Monday to help victims of devastating flooding that has killed nearly 1,000 people across four countries in Asia in recent days. Separate weather systems brought torrent
...(more)
Militaries come to aid of Asia flood victims as toll nears 1,000 12/1/2025 4:48:00 AM.

Separate weather systems brought torrential, extended rainfall to the entire island of Sri Lanka and large parts of Indonesia’s Sumatra, southern Thailand and northern Malaysia last week. Arriving in North Sumatra on Monday, Indonesia Presi
...(more)
Militaries come to aid of Asia flood victims as toll nears 1,000 12/1/2025 4:40:00 AM.

Unlike his Sri Lankan counterpart, he has also not publicly called for international assistance. The toll is the deadliest in a natural disaster in Indonesia since a massive 2018 earthquake and subsequent tsunami killed over 2,000 people in
...(more)

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (92), (5), NEIC (4), OCHA (1), INGV (1), DesInventar (2), WMO (2), USGS (5), INFORM (4), NOAA (1),