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Interactive map of latest earthquakes and active volcanoes in the world

Major mag. 7.5 earthquake - 6km WNW of Grapevine, CA (USA) on Monday, 21 July 1952

Major mag. 7.5 earthquake - 6km WNW of Grapevine, CA (USA) on Monday, 21 July 1952
Date & time: Monday, 21 July 1952 11:52 UTC
Magnitude: 7.5
Depth: 6.0 km
Epicenter latitude / longitude: 34.95817°N / 118.998°W (United States)
Nearest volcano: Lava Mountains Volcanic Field (149 km / 93 mi)
Nearby towns and cities:
12 km (7 mi) SW of Mettler (pop: 100)
16 km (10 mi) N of Lake of the Woods (pop: 900)
16 km (10 mi) NW of Frazier Park (pop: 2,700)
46 km (29 mi) S of Bakersfield (pop: 373,600)
122 km (76 mi) NW of Los Angeles (pop: 3,971,900)
152 km (94 mi) NW of Long Beach (pop: 474,100)
Primary data source: USGS
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!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Mon, 21 Jul 11:52 UTCM 7.5 / 6 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.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks of the 7.5 quake: 6km WNW of Grapevine, CA (USA), 21 Jul 1952 11:52

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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Earlier earthquakes in the same area

Major mag. 7.5 earthquake - 6km WNW of Grapevine, CA (USA) on Monday, 21 July 1952
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