Strong mag. 6.8 earthquake - Southern California (USA) on Sunday, 21 April 1918 at 22:32 (GMT)

Strong mag. 6.8 earthquake  - Southern California (USA) on Sunday, 21 April 1918 at 22:32 (GMT)

Strong magnitude 6.8 earthquake at 0 km depth

Date & time: 21 Apr 1918 10:32:25 UTC###AGESTRINGCOPY###
Magnitude: 6.8
Depth: 0.0 km
Epicenter latitude / longitude: 33.75°N / 117°W (California, United States)
Nearest volcano: Lavic Lake (116 km / 72 mi)
Nearby towns and cities:
3 km (2 mi) W of Hemet (Riverside County) (pop: 83,900)
14 km (9 mi) E of Menifee (Riverside County) (pop: 87,200)
29 km (18 mi) NE of Murrieta (Riverside County) (pop: 109,800)
30 km (19 mi) SE of Moreno Valley (Riverside County) (pop: 204,200)
38 km (24 mi) SE of Redlands (San Bernardino County) (pop: 71,000)
120 km (74 mi) SE of Los Angeles (pop: 3,971,900)
458 km (284 mi) W of Phoenix (Arizona) (pop: 1,563,000)
672 km (417 mi) SE of Sacramento (pop: 490,700)
Primary data source: USGS
Estimated released energy: 1 x 1015 joules (278 gigawatt hours, equivalent to 2.4 x 105 tons of TNT or 14.9 atomic bombs!) [learn more]
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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 6.8 kmSouthern 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 yet. If you felt it be the first to report it!
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Aftershocks of the 6.8 quake Southern California (USA) 21 April 22:32 UTC

More info
Recorded aftershocks, latest first (2 quakes):
  • 06 Jun 1918 22:32 UTC
    | M 5.0 |
    0 km (0 mi) depth
    |
    6 km (3 mi) distance
    | USGS | Details
  • 22 Apr 1918 21:15 UTC
    | M 0.0 |
    0 km (0 mi) depth
    |
    56 km (35 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.8 earthquake - Southern California (USA) on Sunday, 21 April 1918 at 22:32 (GMT)
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