Strong mag. 5.0 earthquake - Lewis County, 43 mi west of Yakima, Washington State, USA, on Thursday, 28 May 1981 at 09:10 (GMT)

Strong mag. 5.0 earthquake - Lewis County, 43 mi west of Yakima, Washington State, USA, on Thursday, 28 May 1981 at 09:10 (GMT)

Strong magnitude 5.0 earthquake at 2 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: 28 May 1981 09:10:45 UTC
Magnitude: 5
Depth: 2.1 km
Epicenter latitude / longitude: 46.52533°N / 121.394°W (Lewis, Washington, United States)
Nearest volcano: Goat Rocks (5 km / 3 mi)
Nearby towns and cities:
23 km (14 mi) ESE of Packwood (pop: 342) --> See nearby quakes!
68 km (43 mi) W of Yakima (pop: 93,700) --> See nearby quakes!
83 km (52 mi) SW of Ellensburg (Kittitas County) (pop: 19,000) --> See nearby quakes!
90 km (56 mi) SE of Graham (Pierce County) (pop: 23,500) --> See nearby quakes!
94 km (59 mi) SE of Bonney Lake (Pierce County) (pop: 19,900) --> See nearby quakes!
96 km (59 mi) SE of South Hill (pop: 52,400) --> See nearby quakes!
97 km (60 mi) SE of Frederickson (Pierce County) (pop: 18,700) --> See nearby quakes!
114 km (71 mi) SE of Tacoma (pop: 207,900) --> See nearby quakes!
128 km (80 mi) ESE of Olympia (pop: 50,300) --> See nearby quakes!
139 km (86 mi) NE of Vancouver (pop: 172,900) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2 x 1012 joules (554 megawatt hours, equivalent to 477 tons of TNT) 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
5.02.1 kmWashington (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 (57 quakes):
  • 25 Jul 1981 02:22 UTC
    | M 1.4 |
    1.6 km (1 mi) depth
    |
    2 km (1 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 23 Jul 1981 04:43 UTC
    | M 1.1 |
    0.3 km (0.2 mi) depth
    |
    0 km (0 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 06 Jul 1981 13:29 UTC
    | M 2.0 |
    5.2 km (3.2 mi) depth
    |
    1 km (0 mi) distance
    | USGS | Details
  • 03 Jul 1981 08:50 UTC
    | M 1.1 |
    4.1 km (2.5 mi) depth
    |
    1 km (1 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 03 Jul 1981 08:34 UTC
    | M 2.2 |
    3.9 km (2.4 mi) depth
    |
    2 km (1 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 03 Jul 1981 02:41 UTC
    | M 1.4 |
    2.2 km (1.4 mi) depth
    |
    1 km (1 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 02 Jul 1981 23:10 UTC
    | M 1.7 |
    3.4 km (2.1 mi) depth
    |
    1 km (1 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12346 km (7672 mi) distance
    | | Details
  • 02 Jul 1981 23:10 UTC
    | M 1.1 |
    1.6 km (1 mi) depth
    |
    1 km (0 mi) distance
    | USGS | Details
    • Show all

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