Strong mag. 5.0 earthquake - Lewis County, 43 mi west of Yakima, Washington, USA, on Thursday, May 28, 1981 at 09:10 GMT
Quake Data | Interactive map | User Reports | Aftershocks | Earlier quakes here | Quakes in the US | Washington
Strong magnitude 5.0 earthquake at 2 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Earthquake details
| Date & time | May 28, 1981 09:10:45 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 5 |
| Depth | 2.1 km |
| Epicenter latitude / longitude | 46.52533°N / 121.394°W  (Lewis County, Washington, United States) |
| Antipode | 46.525°S / 58.606°E |
| Shaking intensity | Strong shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Goat Rocks (5 km / 3 mi) |
| Nearby towns and cities | 23 km (14 mi) ESE of Packwood (pop: 342) | Show on map | Quakes nearby 61 km (38 mi) W of West Valley (pop: 12,700) | Show on map | Quakes nearby 68 km (43 mi) W of Yakima (pop: 93,700) | Show on map | Quakes nearby 83 km (52 mi) SW of Ellensburg (Kittitas County) (pop: 19,000) | Show on map | Quakes nearby 90 km (56 mi) SE of Graham (Pierce County) (pop: 23,500) | Show on map | Quakes nearby 94 km (59 mi) SE of Bonney Lake (Pierce County) (pop: 19,900) | Show on map | Quakes nearby 96 km (59 mi) SE of South Hill (pop: 52,400) | Show on map | Quakes nearby 97 km (60 mi) SE of Frederickson (Pierce County) (pop: 18,700) | Show on map | Quakes nearby 114 km (71 mi) SE of Tacoma (pop: 207,900) | Show on map | Quakes nearby 139 km (86 mi) NE of Vancouver (pop: 172,900) | Show on map | Quakes nearby |
| Estimated seismic energy released | 2 x 1012 joules (554 megawatt hours, equivalent to 477 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 |
| 5.0 | 2.1 km | 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
[More info]
Recorded aftershocks, latest first (11 quakes)
Date and time | Mag Depth | Location | Details |
| Jul 6, 1981 13:29 41 years ago | 2.0 5.2 km | Washington (USA) | More |
| Jul 3, 1981 08:34 41 years ago | 2.2 3.9 km | Washington (USA) | More |
| Jul 2, 1981 20:58 41 years ago | 2.2 3.7 km | Washington (USA) | More |
| Jul 2, 1981 20:00 41 years ago | 2.4 4.8 km | Washington (USA) | More |
| Jul 2, 1981 12:46 41 years ago | 2.2 4.1 km | Washington (USA) | More |
| Jun 17, 1981 15:45 41 years ago | 2.0 6.1 km | Washington (USA) | More |
| Jun 7, 1981 08:36 41 years ago | 2.0 4.6 km | Washington (USA) | More |
| Jun 6, 1981 11:04 41 years ago | 2.0 5.4 km | Washington (USA) | More |
| Jun 4, 1981 04:34 41 years ago | 2.0 5.2 km | Washington (USA) | More |
| May 29, 1981 17:20 41 years ago | 2.9 6.7 km | Lewis County, 42 mi W of Yakima, Washington, USA | More |
| May 28, 1981 09:52 41 years ago | 2.4 1.2 km | Washington (USA) | More |
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!
