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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 - 3.1 mi west of Captain Cook, Hawaii County, USA, on Tuesday, August 21, 1951 at 10:56 GMT 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 & timeAug 21, 1951 10:56:58 UTC
Local time at epicenter
Depth0.0 km
Epicenter latitude / longitude19.483°N / 155.967°W (North Pacific Ocean, Hawaii, United States)
Antipode19.483°S / 24.033°E
Shaking intensitySevere shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoHualalai (25 km / 16 mi)
Nearby towns and cities5 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
Estimated seismic energy released1.4 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.
6.90 kmHawaii region, Hawaii (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.


[More info]

Recorded aftershocks, latest first (0 quake)

So far, no aftershocks have been registered.

Earlier earthquakes in the same area

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