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M6.6 earthquake, northern Mid-Atlantic Ridge, 1979-08-25

MagnitudeM6.6ms

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Depth10 km

Time (UTC)1979-08-25 08:44

Rank in 197919 / 86among M6+

Rank since 19003471 / 14,458

Energy vs an M6×8approx.

northern Mid-Atlantic Ridge · 10.73, -41.69

M6.5+ within 300 km (largest first)

1925 M7.1M7.1

1918 M7.1M7.1

1929 M7.0M7.0

1996 M7.0M7.0

1962 M6.9M6.9

2008 M6.9M6.9

1919 M6.8M6.8

1906 M6.7M6.7

2022 M6.7M6.7

1927 M6.6M6.6

2013 M6.6M6.6

1979 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.9 1962-03-17	1962-03-17 20:47	10 km	northern Mid-Atlantic Ridge
M6.2 1957-10-20	1957-10-20 12:04	15 km	northern Mid-Atlantic Ridge
M7.0 1929-02-22	1929-02-22 20:41	10 km	northern Mid-Atlantic Ridge
M6.6 1927-09-03	1927-09-03 19:47	10 km	northern Mid-Atlantic Ridge
M7.1 1925-10-13	1925-10-13 17:40	10 km	northern Mid-Atlantic Ridge
M6.8 1919-04-21	1919-04-21 11:26	10 km	central Mid-Atlantic Ridge
M7.1 1918-12-02	1918-12-02 09:47	10 km	northern Mid-Atlantic Ridge
M6.7 1906-07-13	1906-07-13 23:43	10 km	northern Mid-Atlantic Ridge

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.