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M7.1 earthquake, Japan, 1938-11-13

MagnitudeM7.1mw

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Depth35 km

Time (UTC)1938-11-13 22:31

Rank in 193814 / 149among M6+

Rank since 19001080 / 14,458

Energy vs an M6×46approx.

200 km ESE of Iwaki, Japan · 36.48, 143.02

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

2011 M7.9M7.9

1938 M7.8M7.8

1938 M7.7M7.7

1978 M7.7M7.7

2011 M7.7M7.7

1905 M7.7M7.7

1915 M7.6M7.6

1938 M7.6M7.6

1939 M7.4M7.4

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.9 1938-11-09	1938-11-09 09:15	15 km	174 km ESE of Iwaki, Japan
M6.5 1938-11-07	1938-11-07 19:33	30 km	156 km ESE of Iwaki, Japan
M6.4 1938-11-07	1938-11-07 19:12	25 km	167 km E of Namie, Japan
M6.5 1938-11-07	1938-11-07 04:15	25 km	127 km E of Iwaki, Japan
M6.3 1938-11-07	1938-11-07 02:28	25 km	64 km E of Iwaki, Japan
M6.8 1938-11-07	1938-11-07 01:38	30 km	130 km ESE of Namie, Japan
M6.2 1938-11-07	1938-11-07 00:47	25 km	119 km E of Iwaki, Japan
M7.6 1938-11-06	1938-11-06 21:38	25 km	141 km ESE of Namie, Japan
M6.3 1938-11-06	1938-11-06 21:03	25 km	105 km E of Iwaki, Japan
M6.2 1938-11-06	1938-11-06 17:19	25 km	109 km E of Namie, Japan

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.