QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

1 km E of Davenport, Washington

· 3.6 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lincoln County 23 kmSpokane County 54 kmAdams County 77 kmStevens County 84 kmWhitman County 95 kmFerry County 96 kmKootenai County 107 kmGrant County 112 kmDouglas County 118 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 1.8 (ml)
Depth
3.6 km below the surface
Felt
no reports yet
Nearest
Lincoln County, 23 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 567 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 47.6557, -118.1255. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lincoln County, WA 23 km (15 mi) ENE of here earthquakes near Lincoln County
Spokane County, WA 54 km (34 mi) W of here earthquakes near Spokane County
Adams County, WA 77 km (48 mi) NNE of here earthquakes near Adams County
Stevens County, WA 84 km (52 mi) SSW of here earthquakes near Stevens County
Whitman County, WA 95 km (59 mi) NNW of here earthquakes near Whitman County
Ferry County, WA 96 km (60 mi) SSE of here earthquakes near Ferry County

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

Aftershocks so far

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

  1. 1.9 6 km ENE of Sprague, Washington
  2. 1.6 19 km NNW of Davenport, Washington
  3. 1.9 5 km ENE of Sprague, Washington
  4. 2.3 8 km NE of Sprague, Washington
  5. 2.5 8 km ENE of Sprague, Washington
  6. 2.0 6 km ENE of Sprague, Washington
  7. 1.9 12 km N of Reardan, Washington
  8. 2.4 7 km ENE of Sprague, Washington
  9. 2.4 9 km NE of Sprague, Washington
  10. 2.1 9 km NNW of Airway Heights, Washington
  11. 1.7 7 km NE of Sprague, Washington
  12. 2.5 9 km NE of Sprague, Washington
  13. 1.6 10 km NNW of Airway Heights, Washington
  14. 1.6 20 km NNW of Davenport, Washington
  15. 2.1 5 km ENE of Sprague, 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.