Strong mag. 5.1 earthquake - Skamania County, 17 mi northeast of Yacolt, Clark County, Washington State, USA, on Sunday, 17 September 1961 at 15:55 (GMT)

Strong mag. 5.1 earthquake - Skamania County, 17 mi northeast of Yacolt, Clark County, Washington State, USA, on Sunday, 17 September 1961 at 15:55 (GMT)

Strong magnitude 5.1 earthquake at 7 km depth

Date & time: 17 Sep 1961 15:55:56 UTC
Magnitude: 5.1
Depth: 7.0 km
Epicenter latitude / longitude: 46.023°N / 122.122°W (Skamania, Washington, United States)
Nearest volcano: Marble Mountain (10 km / 6 mi)
Nearby towns and cities:
28 km (17 mi) ENE of Amboy (pop: 1,610) --> See nearby quakes!
42 km (26 mi) NE of Battle Ground (Clark County) (pop: 19,400) --> See nearby quakes!
53 km (33 mi) NNE of La Camas (pop: 21,800) --> See nearby quakes!
60 km (37 mi) NE of Vancouver (pop: 172,900) --> See nearby quakes!
63 km (39 mi) NNE of Gresham (Oregon) (pop: 110,600) --> See nearby quakes!
64 km (40 mi) E of Longview (Cowlitz County) (pop: 36,800) --> See nearby quakes!
70 km (44 mi) NE of Portland (Oregon) (pop: 632,300) --> See nearby quakes!
80 km (50 mi) NE of Beaverton (Oregon) (pop: 96,600) --> See nearby quakes!
128 km (79 mi) SSE of Olympia (pop: 50,300) --> See nearby quakes!
139 km (86 mi) S of Tacoma (pop: 207,900) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 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
5.17 kmWashington (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

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Recorded aftershocks, latest first (0 quakes):
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