An earthquake of magnitude 5.5 was reported 387 km (240 miles) SW of Tristan on 26th January 2010 at a depth of 10km.

Earthquake Report - 26th January 2010

Location:

39.130 South ; 15.850 West

387 km or 240 miles South-West of Tristan da Cunha

Magnitude: 5.5 Mb

Mb is a measure (standing for Magnitude body) used by seismologists to describe the intensity of deep-seated earthquakes based on the amplitude of P body waves.

Depth: 10 km or 6.2 miles

Administrator David Morley reports that no tremors were felt on Tristan.

The map left shows that the earthquake is almost certainly a along transform fault associated with the Mid-Atlantic Ridge and therefore unconnected with the Tristan da Cunha Volcano.