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M6.6 earthquake, India, 1964-10-21

MagnitudeM6.6mw

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Depth25 km

Time (UTC)1964-10-21 23:09

Rank in 196429 / 144among M6+

Rank since 19003325 / 14,458

Energy vs an M6×9approx.

53 km N of Ziro, India · 28.08, 93.81

M6.5+ within 300 km (largest first)

1950 M8.6M8.6

1947 M7.3M7.3

1943 M7.2M7.2

1970 M7.0M7.0

1964 M6.6M6.6

1915 M6.6M6.6

1906 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1954-02-23	1954-02-23 06:40	15 km	12 km ENE of Trashi Yangtse, Bhutan
M6.4 1951-04-14	1951-04-14 23:40	15 km	57 km WSW of Shi Yomi, India
M6.1 1950-12-03	1950-12-03 06:26	25 km	85 km NNE of P?sigh?t, India
M6.3 1950-10-08	1950-10-08 04:50	25 km	3 km NE of Shi Yomi, India
M6.3 1950-09-30	1950-09-30 07:29	20 km	38 km N of Shi Yomi, India
M6.2 1950-09-13	1950-09-13 11:07	25 km	14 km NNW of Ch?bua, India
M6.2 1950-08-26	1950-08-26 06:33	25 km	7 km NE of Mor?nha, India
M6.3 1950-08-18	1950-08-18 01:07	20 km	136 km NNE of P?sigh?t, India
M6.1 1950-08-17	1950-08-17 01:54	25 km	28 km N of Along, India
M6.2 1950-08-16	1950-08-16 06:42	25 km	56 km NNW of Tezu, India

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.