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
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: 550 thousand (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 2.1 1.3 2.1
us6000tkt2 Scaled population (raster) 4.97 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

Terremoto de magnitud 7,7 sacude la isla de Flores en Indonesia 8/15/2026 12:59:00 AM.

Un fuerte sismo de magnitud 7,7 se registró este viernes en la costa de Indonesia, con epicentro localizado a 62 kilómetros al noroeste de Ende, en la isla de Flores, según el Servicio Geológico de Estados Unidos (USGS). El movimiento telúr
...(more)
Terremoto in Indonesia, le autorità esortano all’evacuazione delle zon.. 8/15/2026 12:59:00 AM.

(ANSA) – GIACARTA, 15 AGO – Le autorità indonesiane esortano i residenti delle zone costiere dell’isola di Flores a evacuare immediatamente verso zone più elevate in seguito al un forte terremoto di magnitudo 7.7 che ha fatto scattare un al
...(more)
Strong 7.7-magnitude quake strikes off Indonesia — USGS 8/15/2026 12:58:00 AM.

MAUMERE, Indonesia — A strong 7.7-magnitude earthquake struck off Flores island in eastern Indonesia early Saturday, the US Geological Survey and Indonesian authorities said, triggering a tsunami warning and prompting hundreds to evacuate.
...(more)
Terremoto in Indonesia, le autorità esortano all''evacuazione delle zo.. 8/15/2026 12:57:00 AM.

(ANSA) - GIACARTA, 15 AGO - Le autorità indonesiane esortano i residenti delle zone costiere dell''isola di Flores a evacuare immediatamente verso zone più elevate in seguito al un forte terremoto di magnitudo 7.7 che ha fatto scattare un a
...(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),