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Major magnitude 6.9 earthquake - 3.1 mi west of Captain Cook, Hawaii County, USA, on Tuesday, August 21, 1951 at 10:56 GMT

Major magnitude 6.9 earthquake at 0 km depth

Earthquake details

Date & time	Aug 21, 1951 10:56:58 UTC
Local time at epicenter
Status	Confirmed
Magnitude	6.9
Depth	0.0 km
Epicenter latitude / longitude	19.483°N / 155.967°W (North Pacific Ocean, Hawaii, United States)
Antipode	19.483°S / 24.033°E
Shaking intensity	Severe shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Hualalai (25 km / 16 mi)
Nearby towns and cities	5 km (3 mi) WSW of Captain Cook (pop: 3,430) \| Show on map \| Quakes nearby 18 km (11 mi) S of Kailua-Kona (Hawaii County) (pop: 12,000) \| Show on map \| Quakes nearby 27 km (17 mi) S of Kalaoa (Hawaii County) (pop: 9,640) \| Show on map \| Quakes nearby 51 km (32 mi) NNW of Hawaiian Ocean View (pop: 4,440) \| Show on map \| Quakes nearby 54 km (34 mi) SSW of Waikoloa (pop: 4,810) \| Show on map \| Quakes nearby 68 km (42 mi) SSW of Waimea (Hawaii County) (pop: 9,210) \| Show on map \| Quakes nearby 77 km (48 mi) W of Volcano Village (pop: 2,580) \| Show on map \| Quakes nearby 90 km (56 mi) W of Mountainview (pop: 3,920) \| Show on map \| Quakes nearby 96 km (60 mi) WSW of Hilo (pop: 43,300) \| Show on map \| Quakes nearby 165 km (103 mi) SSE of Kahului (pop: 26,300) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1.4 x 10¹⁵ joules (392 gigawatt hours, equivalent to 3.4 x 10⁵ tons of TNT or 21.1 atomic bombs!) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
6.9	0 km	Hawaii region, Hawaii (USA)	USGS

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User reports for this quake

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There are no user reports for this quake.

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