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M8.0 earthquake, Canada Earthquake, 1949-08-22

MagnitudeM8.0mw

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Depth10 km

Time (UTC)1949-08-22 04:01

Rank in 19491 / 83among M6+

Rank since 190086 / 14,458

Energy vs an M6×1,000approx.

The 1949 Haida Gwaii, Canada Earthquake · 53.67, -133.01

M6.5+ within 300 km (largest first)

1949 M8.0M8.0

2012 M7.8M7.8

2013 M7.5M7.5

1970 M7.3M7.3

2004 M6.8M6.8

1938 M6.7M6.7

2009 M6.6M6.6

1960 M6.5M6.5

2024 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1948-02-28	1948-02-28 01:58	15 km	191 km WSW of Prince Rupert, Canada
M6.3 1945-10-29	1945-10-29 10:54	15 km	298 km S of Prince Rupert, Canada
M6.2 1945-08-02	1945-08-02 20:44	15 km	126 km SSW of Hydaburg, Alaska
M6.7 1938-03-22	1938-03-22 15:22	10 km	280 km SW of Prince Rupert, Canada
M6.3 1936-12-21	1936-12-21 19:03	15 km	252 km SW of Prince Rupert, Canada
M6.0 1930-07-01	1930-07-01 01:09	15 km	230 km SSW of Prince Rupert, Canada
M6.2 1921-04-10	1921-04-10 13:40	15 km	296 km SSW of Hydaburg, Alaska

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.