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M7.4 earthquake, Ecuador, 1971-07-27

MagnitudeM7.4mw

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Depth113 km

Time (UTC)1971-07-27 02:02

Rank in 19716 / 143among M6+

Rank since 1900546 / 14,458

Energy vs an M6×135approx.

98 km ESE of Sucúa, Ecuador · -2.85, -77.38

M6.5+ within 300 km (largest first)

1906 M7.5M7.5

2019 M7.5M7.5

2021 M7.5M7.5

1971 M7.4M7.4

1997 M7.2M7.2

2010 M7.1M7.1

1983 M7.0M7.0

1995 M7.0M7.0

1986 M6.8M6.8

2007 M6.8M6.8

2023 M6.8M6.8

1995 M6.7M6.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.7 1971-05-17	1971-05-17 11:04	171 km	37 km E of Palora, Ecuador
M6.1 1967-11-04	1967-11-04 16:26	94 km	Peru-Ecuador border region
M6.5 1965-09-17	1965-09-17 11:13	186 km	58 km E of Puyo, Ecuador
M6.2 1963-11-03	1963-11-03 03:10	25 km	98 km E of Gualaquiza, Ecuador
M6.6 1963-05-10	1963-05-10 22:22	20 km	55 km ENE of Macas, Ecuador
M6.6 1961-07-28	1961-07-28 01:05	142 km	119 km E of Macas, Ecuador
M6.2 1958-05-25	1958-05-25 21:11	46 km	80 km ENE of Gualaquiza, Ecuador
M6.5 1955-05-11	1955-05-11 11:04	15 km	42 km SE of Cayambe, Ecuador
M6.1 1953-04-17	1953-04-17 00:02	15 km	52 km WSW of Barranca, Peru
M6.5 1949-08-05	1949-08-05 19:08	15 km	22 km NE of Baños, Ecuador

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.