| Magnitude | 6.6 |
| Region | CENTRAL MID-ATLANTIC RIDGE |
| Date time | 2026-06-17 18:56:58.2 UTC |
| Location | -0.525 ; -20.015 |
| Depth | 10 km |
| Distance | 1254 km SSW of Freetown, Sierra Leone / pop: 802,000 / local time: 18:56:58.2 2026-06-17 1224 km SSW of Bonthe, Sierra Leone / pop: 10,200 / local time: 18:56:58.2 2026-06-17 |
Source parameters provided by:
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)
Tsunami information at:
US (NOAA)All data providers for this event:
Geoscience Australia, Canberra, ACT, Australia -- Canberra, Australia (AUST)Seismological Survey of Serbia -- Belgrade, Serbia (BEO)
British Geological Survey -- Edinburgh, United Kingdom (BGS)
Centre National de la Recherche Scientifique et Technique -- Rabat, Morocco (CNRST)
GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)
Geophysical Survey of the Russian Academy of Sciences -- Obninsk, Russia (GSRAS)
Instituto Portugues do Mar e da Atmosfera -- Lisbon, Portugal (IPMA)
Instituto Nazionale di Geofisica e Vulcanologia -- Rome, Italy (INGV) -- DOI: https://terremoti.ingv.it/en/iside
Kandilli Observatory and Earthquake Research Institute -- Istanbul, Türkiye (KOERI)
Landsamt fur Geologie, Rohstoffe und Bergbau -- Freiburg, Germany (LED)
Instituto Geografico Nacional -- Madrid, Spain (IGN)
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)
The research institute NORSAR -- Kjeller, Norway (NORSAR)
Pacific Tsunami Warning Center -- Honolulu, United States (PTWC)
EMSC -- Arpajon, France (SC4)
Republic Hydrometeorological Institute -- Banja Luka, Bosnia-Herzogovina (SORS)
Institute of Geosciences, Polytechnic University of Tirana -- Tirana, Albania (IGEO)
Further information can be found at:
National Earthquake Information Center, U.S. Geological Survey -- Golden, United States (NEIC)GeoForschungsZentrum (GFZ) -- Potsdam, Germany (GFZ)