6.6
EarthquakeMajor
M6.6 earthquake - central Mid-Atlantic Ridge
8335 d ago · 21 Dec 2003, 07:40 UTC central Mid-Atlantic Ridge
What happened
A magnitude 6.6 earthquake struck central Mid-Atlantic Ridge on 21 Dec 2003, 07:40 UTC at a depth of 10 km.
Earthquakes of this size are classed as Strong. Can cause damage in populated areas up to tens of kilometres away. This was a shallow earthquake, which tends to be felt more strongly at the surface.
Timeline
First reported by USGS
16 Oct 2026, 20:46 UTC
Community