Strong mag. 5.1 earthquake - Olympic Peninsula, Washington (USA), on Sunday, October 27, 1940 at 22:29 GMT
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Strong magnitude 5.1 earthquake at 0 km depth
Earthquake details
Date & time | Oct 27, 1940 22:29:18 UTC |
Local time at epicenter | |
Status | Confirmed |
Magnitude | 5.1 |
Depth | 0.0 km |
Epicenter latitude / longitude | 47.2°N / 123.4°W ![]() |
Antipode | 47.2°S / 56.6°E |
Shaking intensity | Strong shaking near epicenter |
Felt | 0 reports |
Primary data source | USGS (United States Geological Survey) |
Nearest volcano | Mount Rainier (130 km / 81 mi) |
Nearby towns and cities | 22 km (14 mi) N of Elma (pop: 3,030) | Show on map | Quakes nearby 40 km (25 mi) NE of Aberdeen (Grays Harbor County) (pop: 16,300) | Show on map | Quakes nearby 42 km (26 mi) WNW of Olympia (pop: 50,300) | Show on map | Quakes nearby 43 km (27 mi) WNW of Tumwater (Thurston County) (pop: 19,200) | Show on map | Quakes nearby 47 km (29 mi) WNW of Lacey (pop: 46,400) | Show on map | Quakes nearby 67 km (41 mi) W of Lakewood (pop: 59,800) | Show on map | Quakes nearby 72 km (45 mi) W of Tacoma (pop: 207,900) | Show on map | Quakes nearby 83 km (52 mi) W of Federal Way (pop: 95,200) | Show on map | Quakes nearby 92 km (57 mi) WSW of Seattle (pop: 684,500) | Show on map | Quakes nearby 195 km (121 mi) NNW of Portland (Oregon) (pop: 632,300) | Show on map | Quakes nearby |
Estimated seismic energy released | 2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) | about seismic energy |
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. | Depth | Location | Source |
5.1 | 0 km | Olympic Peninsula, Washington (USA) | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Aftershocks
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Recorded aftershocks, latest first (0 quake)
So far, no aftershocks have been registered.
Earlier earthquakes in the same area
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