Major magnitude 7.5 earthquake - 9.8 mi north of Frazier Park, Kern County, California, USA, on Monday, July 21, 1952 at 11:52 (GMT)

Major magnitude 7.5 earthquake - 9.8 mi north of Frazier Park, Kern County, California, USA, on Monday, July 21, 1952 at 11:52 (GMT)

Major magnitude 7.5 earthquake at 6 km depth

Date & time: Jul 21, 1952 11:52:15 UTC
Magnitude: 7.5
Depth: 6.0 km
Epicenter latitude / longitude: 34.95817°N / 118.998°W↗ (Kern, California, United States)
Antipode: 34.958°S / 61.002°E↗
Nearest volcano: Lava Mountains Volcanic Field (149 km / 93 mi)
Nearby towns and cities:
12 km (7 mi) SSW of Mettler (pop: 136) --> See nearby quakes!
32 km (20 mi) SSW of Arvin (pop: 20,900) --> See nearby quakes!
34 km (21 mi) SSW of Lamont (Kern County) (pop: 15,100) --> See nearby quakes!
46 km (29 mi) S of Bakersfield (pop: 373,600) --> See nearby quakes!
67 km (42 mi) NNW of Valencia (pop: 148,500) --> See nearby quakes!
76 km (47 mi) NW of Santa Clarita (pop: 182,400) --> See nearby quakes!
79 km (49 mi) NNW of Simi Valley (pop: 126,800) --> See nearby quakes!
80 km (50 mi) NNE of Ventura (pop: 96,800) --> See nearby quakes!
122 km (76 mi) NW of Los Angeles (pop: 3,971,900) --> See nearby quakes!
460 km (286 mi) SSE of Sacramento (pop: 490,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.1 x 1016 joules (3117 gigawatt hours, equivalent to 2.7 x 106 tons of TNT or 167.6 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.
Mag.DepthLocationSource
7.56 km6km WNW of Grapevine, CA (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.
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Aftershocks

More info

Recorded aftershocks, latest first (432 quakes)

  • 18 Jul 1954 13:58 UTC
    | M 3.7 |
    6 km (3.7 mi) depth
    |
    60 km (37 mi) distance
    | USGS | Details
  • 15 Jul 1954 22:33 UTC
    | M 3.5 |
    15.1 km (9.4 mi) depth
    |
    4 km (3 mi) distance
    | USGS | Details
  • 04 Jul 1954 19:13 UTC
    | M 3.7 |
    6 km (3.7 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details
  • 17 Jun 1954 14:23 UTC
    | M 3.5 |
    9.9 km (6.2 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
  • 10 Jun 1954 04:23 UTC
    | M 3.9 |
    6 km (3.7 mi) depth
    |
    61 km (38 mi) distance
    | USGS | Details
  • 08 Jun 1954 10:57 UTC
    | M 3.5 |
    6 km (3.7 mi) depth
    |
    56 km (35 mi) distance
    | USGS | Details
  • 25 May 1954 10:48 UTC
    | M 3.7 |
    1.6 km (1 mi) depth
    |
    83 km (52 mi) distance
    | USGS | Details
  • 23 May 1954 23:52 UTC
    | M 5.0 |
    14.5 km (9 mi) depth
    |
    1 km (1 mi) distance
    | USGS | Details
  • 19 May 1954 00:48 UTC
    | M 3.7 |
    6 km (3.7 mi) depth
    |
    137 km (85 mi) distance
    | USGS | Details
  • 13 May 1954 10:05 UTC
    | M 3.5 |
    6 km (3.7 mi) depth
    |
    58 km (36 mi) distance
    | USGS | Details
  • 12 May 1954 20:37 UTC
    | M 3.5 |
    6 km (3.7 mi) depth
    |
    59 km (37 mi) distance
    | USGS | Details
  • 11 May 1954 04:12 UTC
    | M 3.8 |
    6 km (3.7 mi) depth
    |
    53 km (33 mi) distance
    | USGS | Details
  • 06 May 1954 03:01 UTC
    | M 3.6 |
    10.9 km (6.8 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details
  • 03 May 1954 04:08 UTC
    | M 3.5 |
    6.6 km (4.1 mi) depth
    |
    19 km (12 mi) distance
    | USGS | Details
  • 01 May 1954 22:04 UTC
    | M 4.1 |
    6 km (3.7 mi) depth
    |
    61 km (38 mi) distance
    | USGS | Details
  • 30 Apr 1954 00:36 UTC
    | M 4.1 |
    2.4 km (1.5 mi) depth
    |
    231 km (143 mi) distance
    | USGS | Details
    • Show all

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