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M7.1 earthquake, Peru, 1937-06-21

MagnitudeM7.1mw

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Depth30 km

Time (UTC)1937-06-21 15:13

Rank in 19378 / 98among M6+

Rank since 19001079 / 14,458

Energy vs an M6×46approx.

55 km SW of Santiago de Cao, Peru · -8.28, -79.63

M6.5+ within 300 km (largest first)

1966 M8.1M8.1

1970 M7.9M7.9

1960 M7.6M7.6

1996 M7.5M7.5

1937 M7.1M7.1

1928 M7.1M7.1

1967 M7.0M7.0

1946 M6.8M6.8

1963 M6.6M6.6

1995 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1931-09-21	1931-09-21 21:36	10 km	164 km SW of Pacasmayo, Peru
M6.1 1931-04-03	1931-04-03 01:56	35 km	123 km WSW of Puerto Casma, Peru
M7.1 1928-07-18	1928-07-18 19:05	35 km	15 km SSW of Huabal, Peru
M6.1 1927-07-14	1927-07-14 23:27	15 km	252 km SW of Pacasmayo, Peru
M6.3 1925-12-27	1925-12-27 17:38	15 km	115 km SSW of Sechura, Peru
M6.3 1925-11-17	1925-11-17 00:17	10 km	274 km WSW of Puerto Casma, Peru
M6.3 1916-09-29	1916-09-29 18:54	15 km	102 km SW of Huarmey, Peru

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.