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Major magnitude 7.3 earthquake - 75 mi west of Eureka, Humboldt County, California, USA, on Tuesday, January 31, 1922 at 13:17 GMT

Major magnitude 7.3 earthquake - 75 mi west of Eureka, Humboldt County, California, USA, on Tuesday, January 31, 1922 at 13:17 GMT Major magnitude 7.3 earthquake - 75 mi west of Eureka, Humboldt County, California, USA, on Tuesday, January 31, 1922 at 13:17 GMT

Major magnitude 7.3 earthquake at 15 km depth

Earthquake details

Date & timeJan 31, 1922 13:17:31 UTC
Local time at epicenter
StatusConfirmed
Magnitude7.3
Depth15.0 km
Epicenter latitude / longitude41.115°N / 125.54°W (North Pacific Ocean, California, United States)
Antipode41.115°S / 54.46°E
Shaking intensityVery strong shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoCentral Segment (150 km / 93 mi)
Nearby towns and cities117 km (73 mi) W of Trinidad (pop: 357) | Show on map | Quakes nearby
121 km (75 mi) WNW of Eureka (Humboldt County) (pop: 27,000) | Show on map | Quakes nearby
122 km (76 mi) W of McKinleyville (Humboldt County) (pop: 15,200) | Show on map | Quakes nearby
125 km (78 mi) WNW of Arcata (Humboldt County) (pop: 17,800) | Show on map | Quakes nearby
128 km (79 mi) WNW of Bayside (Humboldt County) (pop: 17,100) | Show on map | Quakes nearby
130 km (81 mi) WNW of Fortuna (Humboldt County) (pop: 12,000) | Show on map | Quakes nearby
132 km (82 mi) WSW of Crescent City (Del Norte County) (pop: 6,770) | Show on map | Quakes nearby
139 km (86 mi) WNW of Rio Dell (pop: 3,390) | Show on map | Quakes nearby
148 km (92 mi) SW of Brookings (Curry County, Oregon) (pop: 6,480) | Show on map | Quakes nearby
235 km (146 mi) SW of Grants Pass (Josephine County, Oregon) (pop: 37,100) | Show on map | Quakes nearby
Estimated seismic energy released5.6 x 1015 joules (1562 gigawatt hours, equivalent to 1.3 x 106 tons of TNT or 84 atomic bombs!) | about seismic energy
Show interactive Map
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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.DepthLocationSource
7.315 kmoff the coast of Northern California (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.

Aftershocks

[More info]

Recorded aftershocks, latest first (4 quakes)

Date and timeMag
Depth
LocationDetails
Jan 9, 1924 10:22
99 years ago
4.8

0 km
2 mi N of Eureka, Humboldt County, California, USAMore
Apr 29, 1923 02:31
100 years ago
5.6

0 km
46 mi W of Eureka, Humboldt County, California, USAMore
Feb 9, 1923 11:14
100 years ago
5.0

0 km
2 mi N of Eureka, Humboldt County, California, USAMore
Jan 22, 1923 09:04
100 years ago
6.9

15 km
58 mi SW of Eureka, Humboldt County, California, USAMore

Earlier earthquakes in the same area

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