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M7.4 earthquake, Argentina, 1977-11-23

MagnitudeM7.4ms

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Depth13 km

Time (UTC)1977-11-23 09:26

Rank in 19777 / 85among M6+

Rank since 1900576 / 14,458

Energy vs an M6×126approx.

San Juan, Argentina · -31.03, -67.77

M6.5+ within 300 km (largest first)

1977 M7.4M7.4

1944 M6.9M6.9

1917 M6.9M6.9

1952 M6.8M6.8

1920 M6.7M6.7

1927 M6.7M6.7

1941 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1972-09-26	1972-09-26 21:05	21 km	62 km NNE of San Martín, Argentina
M6.0 1970-03-15	1970-03-15 12:39	117 km	86 km NW of San José de Jáchal, Argentina
M6.1 1966-11-10	1966-11-10 03:02	113 km	34 km SSE of Nueve de Julio, Argentina
M6.8 1952-06-11	1952-06-11 00:31	25 km	8 km W of Nueve de Julio, Argentina
M6.9 1944-01-15	1944-01-15 23:49	15 km	4 km ESE of Chimbas, Argentina
M6.5 1941-07-03	1941-07-03 07:11	15 km	27 km SE of Caucete, Argentina
M6.2 1936-05-22	1936-05-22 00:15	15 km	21 km SE of Candelaria, Argentina
M6.7 1927-11-14	1927-11-14 07:19	50 km	25 km SE of Monte Patria, Chile
M6.7 1920-12-17	1920-12-17 19:00	15 km	26 km S of Nueve de Julio, Argentina
M6.9 1917-07-27	1917-07-27 02:51	115 km	72 km WNW of Calingasta, Argentina

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.