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M7.4 earthquake, North Korea, 1917-07-31

MagnitudeM7.4mB

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Depth460 km

Time (UTC)1917-07-31 03:23

Rank in 19177 / 87among M6+

Rank since 1900560 / 14,458

Energy vs an M6×126approx.

7 km WSW of Rajin, North Korea · 42.23, 130.21

M6.5+ within 300 km (largest first)

1917 M7.4M7.4

1994 M7.3M7.3

2002 M7.3M7.3

1999 M7.1M7.1

1957 M6.9M6.9

2010 M6.9M6.9

1960 M6.8M6.8

1946 M6.8M6.8

1908 M6.7M6.7

1905 M6.6M6.6

1973 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.7 1908-04-19	1908-04-19 07:58	470 km	41 km SE of Vrangel’, Russia
M6.6 1905-08-25	1905-08-25 09:46	470 km	5 km SE of Namyang, North Korea

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.