QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

4 km NNE of Waterville, Washington

· 7.6 km deep · released about 430 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Douglas County 27 kmChelan County 47 kmGrant County 68 kmKittitas County 79 kmOkanogan County 98 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.8 (ml)
Depth
7.6 km below the surface
Felt
17 reports · strongest reported intensity III
Nearest
Douglas County, 27 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3034 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 17 people have reported feeling it to USGS.

How big was it?

This earthquake released about 430 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 35,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 25,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.2× the energy of this one
  4. This earthquake M 2.8 about 430 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 47.6880, -120.0437. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Douglas County, WA 27 km (17 mi) WSW of here earthquakes near Douglas County
Chelan County, WA 47 km (29 mi) ESE of here earthquakes near Chelan County
Grant County, WA 68 km (42 mi) NW of here earthquakes near Grant County
Kittitas County, WA 79 km (49 mi) NE of here earthquakes near Kittitas County
Okanogan County, WA 98 km (61 mi) SSW of here earthquakes near Okanogan County
Adams County, WA 138 km (86 mi) WNW of here earthquakes near Adams County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

58 earthquakes have been recorded within 50 km since this one.

  1. 2.0 6 km NNE of Entiat, Washington
  2. 1.6 10 km NW of Entiat, Washington
  3. 1.6 2 km SSE of Brewster, Washington
  4. 2.1 3 km E of Entiat, Washington
  5. 1.6 20 km SSE of Mansfield, Washington
  6. 1.6 4 km NNW of Entiat, Washington
  7. 1.6 8 km WNW of Entiat, Washington
  8. 1.7 4 km WNW of Waterville, Washington
  9. 1.7 9 km WNW of Entiat, Washington
  10. 1.5 Washington
  11. 1.9 9 km NW of Entiat, Washington
  12. 1.7 8 km W of Entiat, Washington
  13. 1.6 6 km WNW of Entiat, Washington
  14. 1.5 7 km N of Waterville, Washington
  15. 2.0 12 km WSW of Entiat, Washington

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.