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M8.1 earthquake, 1939 Sulawesi Earthquake, 1939-12-21

MagnitudeM8.1mw

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Depth150 km

Time (UTC)1939-12-21 21:00

Rank in 19391 / 80among M6+

Rank since 190057 / 14,458

Energy vs an M6×1,413approx.

1939 Sulawesi Earthquake · -0.02, 122.79

M6.5+ within 300 km (largest first)

1939 M8.1M8.1

1905 M7.8M7.8

1990 M7.8M7.8

1938 M7.7M7.7

2000 M7.6M7.6

1991 M7.5M7.5

1941 M7.4M7.4

1984 M7.4M7.4

2008 M7.4M7.4

1913 M7.1M7.1

1991 M7.0M7.0

1996 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.7 1938-05-19	1938-05-19 17:08	35 km	120 km NE of Palu, Indonesia
M6.4 1936-10-03	1936-10-03 21:50	25 km	83 km NNW of Gorontalo, Indonesia
M6.1 1927-12-11	1927-12-11 17:25	35 km	202 km ESE of Luwuk, Indonesia
M6.2 1927-12-01	1927-12-01 04:37	20 km	56 km N of Poso, Indonesia
M6.2 1927-08-04	1927-08-04 15:47	25 km	55 km SSE of Luwuk, Indonesia
M6.0 1927-02-21	1927-02-21 12:25	35 km	100 km W of Luwuk, Indonesia
M6.6 1923-12-05	1923-12-05 22:35	35 km	28 km E of Poso, Indonesia
M6.4 1923-02-23	1923-02-23 05:51	35 km	54 km NE of Luwuk, Indonesia
M6.4 1922-09-11	1922-09-11 14:44	35 km	69 km NNE of Luwuk, Indonesia
M6.8 1913-11-19	1913-11-19 03:20	35 km	161 km S of Luwuk, Indonesia

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.