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M6.9 earthquake, central Mid-Atlantic Ridge, 1951-07-18

MagnitudeM6.9mw

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Depth15 km

Time (UTC)1951-07-18 09:06

Rank in 195113 / 135among M6+

Rank since 19002084 / 14,458

Energy vs an M6×20approx.

central Mid-Atlantic Ridge · 0.62, -26.95

M6.5+ within 300 km (largest first)

2020 M6.9M6.9

1951 M6.9M6.9

1975 M6.7M6.7

1972 M6.7M6.7

1985 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1947-08-09	1947-08-09 02:48	15 km	central Mid-Atlantic Ridge
M6.3 1942-03-08	1942-03-08 04:46	15 km	central Mid-Atlantic Ridge
M6.3 1937-12-28	1937-12-28 06:19	15 km	central Mid-Atlantic Ridge
M6.0 1937-10-06	1937-10-06 21:48	15 km	central Mid-Atlantic Ridge
M6.0 1928-02-17	1928-02-17 23:13	10 km	central Mid-Atlantic Ridge
M6.3 1923-08-08	1923-08-08 12:17	10 km	South Atlantic Ocean
M6.4 1920-11-12	1920-11-12 05:42	10 km	central Mid-Atlantic Ridge
M6.2 1917-10-07	1917-10-07 14:42	10 km	central 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.