Home › 2011 › Japan

M7.1 earthquake, Japan, 2011-04-07

MagnitudeM7.1mww

This page is updated only once a day and is not an alert service. For current earthquake and tsunami information, check the Japan Meteorological Agency, the USGS and your local authorities.

Depth42 km

Time (UTC)2011-04-07 14:32

Rank in 201112 / 207among M6+

Rank since 19001225 / 14,458

Energy vs an M6×45approx.

29 km ESE of Ishinomaki, Japan · 38.28, 141.59

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

Event	Time (UTC)	Depth	Place
M5.8 2011-04-11	2011-04-11 08:16	10 km	14 km SSE of Marumori, Japan
M5.6 2011-04-21	2011-04-21 16:11	56 km	20 km ENE of Namie, Japan
M5.5 2011-04-28	2011-04-28 09:27	38 km	near the east coast of Honshu, Japan

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

1933 M8.4M8.4

1960 M8.0M8.0

1931 M7.9M7.9

2011 M7.9M7.9

1938 M7.8M7.8

1994 M7.8M7.8

1938 M7.7M7.7

1978 M7.7M7.7

2011 M7.7M7.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 2011-03-31	2011-03-31 07:15	42 km	18 km SSE of ?funato, Japan
M6.1 2011-03-29	2011-03-29 10:54	15 km	114 km E of Namie, Japan
M6.2 2011-03-27	2011-03-27 22:23	19 km	62 km E of Ishinomaki, Japan
M6.2 2011-03-25	2011-03-25 11:36	39 km	36 km SSE of ?funato, Japan
M6.4 2011-03-22	2011-03-22 09:44	13 km	130 km E of Miyako, Japan
M6.1 2011-03-22	2011-03-22 09:19	31 km	72 km ESE of Namie, Japan
M6.4 2011-03-22	2011-03-22 07:18	11 km	267 km E of Namie, Japan
M6.2 2011-03-17	2011-03-17 04:13	29 km	57 km NNE of Miyako, Japan
M6.1 2011-03-15	2011-03-15 15:23	18 km	138 km ENE of Miyako, Japan
M6.0 2011-03-15	2011-03-15 13:27	28 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.