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M6.9 earthquake, South Sandwich Islands, 2021-08-16

MagnitudeM6.9mww

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Depth17 km

Time (UTC)2021-08-16 11:10

Rank in 202123 / 157among M6+

Rank since 19002024 / 14,458

Energy vs an M6×22approx.

South Sandwich Islands region · -58.37, -23.36

M5.5+ within 100 km in the next 30 days

Event	Time (UTC)	Depth	Place
M5.6 2021-08-17	2021-08-17 03:10	10 km	South Sandwich Islands region
M5.5 2021-08-29	2021-08-29 23:32	10 km	South Sandwich Islands region

M6.5+ within 300 km (largest first)

2021 M8.1M8.1

2021 M7.5M7.5

1933 M7.5M7.5

2013 M7.3M7.3

1961 M7.3M7.3

1910 M7.2M7.2

1983 M7.2M7.2

1991 M7.2M7.2

2021 M7.1M7.1

2018 M7.1M7.1

1977 M7.1M7.1

1987 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 2021-08-12	2021-08-12 19:43	35 km	South Sandwich Islands region
M6.1 2021-08-12	2021-08-12 18:41	35 km	South Sandwich Islands region
M6.7 2021-08-12	2021-08-12 18:36	35 km	South Sandwich Islands region
M8.1 2021-08-12	2021-08-12 18:35	23 km	2021 South Sandwich Islands Earthquake
M7.5 2021-08-12	2021-08-12 18:32	47 km	South Sandwich Islands region
M6.4 2020-07-26	2020-07-26 00:53	10 km	South Sandwich Islands region
M6.0 2020-02-08	2020-02-08 14:32	16 km	South Sandwich Islands region
M6.1 2020-01-20	2020-01-20 06:51	93 km	South Sandwich Islands region
M6.6 2019-08-27	2019-08-27 23:55	16 km	South Sandwich Islands region
M6.5 2019-04-09	2019-04-09 17:53	38 km	South Sandwich Islands region

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.