M 7.7 Earthquake and Tsunami (1.7 m) in Indonesia on 14 Aug 2026 21:58 UTC

Event summary

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

GDACS ID EQ 1558059
Earthquake Magnitude: 7.7M
Glide number: EQ-2026-000151-IDN
Depth: 10 Km
Lat/Lon: -8.3101 , 121.3517
Event Date: 14 Aug 2026 21:58 UTC
15 Aug 2026 05:58 Local
Exposed Population: 1.7 million (in MMI>=VII)
Inserted at: 14 Aug 2026 22:21 UTC
INFORM Coping capacity:
4.8 (Indonesia)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 2.8 1.3 2.8
us6000tkt2 Scaled population (raster) 5.87 Max wave alert 1.68m  
  C1 shakemap -1.73 Max wave realtime 1.68m  
  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
Detailed event map. European Union, 2026. 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

Puissant séisme dans l’est de l’Indonésie, au moins 20 morts 8/15/2026 7:40:00 AM.

Au moins 20 personnes ont perdu la vie dans un séisme de magnitude 7,7 survenu samedi 15 août à l’est de l’Indonésie. Des milliers d’habitants ont été évacués des côtes en raison d’un risque de tsunami. Des journalistes de l’AFP ont vu des
...(more)
Magnitude 7.7 earthquake strikes off Indonesia’s coast, killing at lea.. 8/15/2026 7:40:00 AM.

Authorities said six people were injured, and two others were missing after a landslide triggered by the quake. Authorities issued a tsunami warning and urged coastal residents to move to higher ground, but later lifted the warning when Ind
...(more)
At least 5 dead after powerful 7.7 earthquake hits Indonesia''s Flores.. 8/15/2026 7:39:00 AM.

Jakarta: At least five people were killed after a powerful magnitude 7.7 earthquake hit off the coast of Indonesia''s Flores Island on Saturday morning. CNN reported the confirmed death toll, citing updates from Provincial Police Chief Rudi
...(more)
Terremoto in Indonesia di magnitudo 7.7 sull''isola di Flores, almeno .. 8/15/2026 7:38:00 AM.

Nella notte italiana fra venerdì 14 e sabato 15 agosto, c''è stato un forte terremoto in Indonesia, di magnitudo 7.7 . Il sisma ha colpito la zona costiera dell'' isola di Flores . Le autorità hanno diramato l''allerta tsunami, poi revocata
...(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 (90), NEIC (4), OCHA (1), DesInventar (2), WMO (2), USGS (5), (3), INFORM (4),