Strong mag. 6.6 earthquake - Offshore Northern California (USA) on Sunday, 26 April 1992 at 11:18 (GMT)

Strong mag. 6.6 earthquake  - Offshore Northern California (USA) on Sunday, 26 April 1992 at 11:18 (GMT)

Strong magnitude 6.6 earthquake at 22 km depth

Date & time: 26 Apr 1992 11:18:25 UTC###AGESTRINGCOPY###
Magnitude: 6.6
Depth: 21.7 km
Epicenter latitude / longitude: 40.38283°N / 124.555°W (California, United States)
Nearest volcano: Black Butte (216 km / 134 mi)
Nearby towns and cities:
33 km (20 mi) SW of Ferndale (pop: 1,370)
40 km (25 mi) WSW of Scotia (Humboldt County) (pop: 850)
41 km (26 mi) SW of Fortuna (Humboldt County) (pop: 12,000)
57 km (36 mi) SW of Eureka (Humboldt County) (pop: 27,000)
69 km (43 mi) WNW of Redway (pop: 1,230)
73 km (46 mi) SSW of McKinleyville (Humboldt County) (pop: 15,200)
344 km (214 mi) NNW of San Francisco (pop: 864,800)
409 km (254 mi) NW of San Jose (pop: 1,026,900)
Primary data source: USGS
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 atomic bombs!) More info
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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.
MagnitudeDepthLocationSource
M 6.622 kmoffshore Northern California (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

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Aftershocks of the 6.6 quake Offshore Northern California (USA) 26 April 11:18 UTC

More info
Recorded aftershocks, latest first (3036 quakes):
  • 23 Oct 1992 05:13 UTC
    | M 1.5 |
    7.7 km (4.8 mi) depth
    |
    23 km (14 mi) distance
    | USGS | Details
  • 23 Oct 1992 05:10 UTC
    | M 2.1 |
    22.9 km (14.2 mi) depth
    |
    4 km (2 mi) distance
    | USGS | Details
  • 23 Oct 1992 01:54 UTC
    | M 1.3 |
    9.3 km (5.8 mi) depth
    |
    13 km (8 mi) distance
    | USGS | Details
  • 22 Oct 1992 21:38 UTC
    | M 1.3 |
    9 km (5.6 mi) depth
    |
    25 km (16 mi) distance
    | USGS | Details
  • 22 Oct 1992 18:58 UTC
    | M 1.7 |
    22.6 km (14 mi) depth
    |
    34 km (21 mi) distance
    | USGS | Details
  • 22 Oct 1992 17:27 UTC
    | M 1.6 |
    21.3 km (13.2 mi) depth
    |
    6 km (4 mi) distance
    | USGS | Details
  • 22 Oct 1992 14:01 UTC
    | M 1.5 |
    16.4 km (10.2 mi) depth
    |
    19 km (12 mi) distance
    | USGS | Details
  • 22 Oct 1992 12:54 UTC
    | M 1.2 |
    8.9 km (5.5 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
  • 22 Oct 1992 10:15 UTC
    | M 2.4 |
    3 km (1.9 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 22 Oct 1992 10:15 UTC
    | M 2.7 |
    3.8 km (2.4 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 22 Oct 1992 09:43 UTC
    | M 1.5 |
    3.1 km (1.9 mi) depth
    |
    26 km (16 mi) distance
    | USGS | Details
  • 22 Oct 1992 01:37 UTC
    | M 1.4 |
    12.4 km (7.7 mi) depth
    |
    26 km (16 mi) distance
    | USGS | Details
  • 21 Oct 1992 23:20 UTC
    | M 2.5 |
    -0.7 km (-0.4 mi) depth
    |
    30 km (19 mi) distance
    | USGS | Details
  • 21 Oct 1992 17:41 UTC
    | M 2.3 |
    19.1 km (11.9 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 21 Oct 1992 14:04 UTC
    | M 2.0 |
    18.2 km (11.3 mi) depth
    |
    10 km (6 mi) distance
    | USGS | Details
  • 21 Oct 1992 06:28 UTC
    | M 1.9 |
    22.2 km (13.8 mi) depth
    |
    76 km (47 mi) distance
    | USGS | Details
  • Show all