QuakeIndex

explosion · reviewed by a seismologist

M 2.4ml

8 km NNE of Sprague, Washington

· -0.4 km deep · released about 130 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lincoln County 45 kmSpokane County 48 kmWhitman County 59 kmAdams County 60 kmKootenai County 98 kmBenewah County 98 kmGarfield County 108 kmLatah County 109 kmStevens County 114 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 2.4 (ml)
Depth
-0.4 km below the surface
Felt
no reports yet
Nearest
Lincoln County, 45 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3239 days ago

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

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 130 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 80,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.2× the energy of this one
  4. This earthquake M 2.4 about 130 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 47.3683, -117.9167. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lincoln County, WA 45 km (28 mi) ESE of here earthquakes near Lincoln County
Spokane County, WA 48 km (30 mi) SW of here earthquakes near Spokane County
Whitman County, WA 59 km (37 mi) NNW of here earthquakes near Whitman County
Adams County, WA 60 km (37 mi) NE of here earthquakes near Adams County
Kootenai County, ID 98 km (61 mi) WSW of here earthquakes near Kootenai County
Benewah County, ID 98 km (61 mi) W of here earthquakes near Benewah County

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

Aftershocks so far

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

  1. 2.1 8 km NE of Sprague, Washington
  2. 2.0 7 km NE of Ritzville, Washington
  3. 2.2 10 km NE of Sprague, Washington
  4. 2.0 Washington
  5. 1.6 5 km E of Four Lakes, Washington
  6. 2.0 10 km NE of Sprague, Washington
  7. 2.4 6 km ENE of Sprague, Washington
  8. 2.9 8 km NNE of Airway Heights, Washington
  9. 1.6 8 km NNE of Airway Heights, Washington
  10. 2.4 13 km NE of Sprague, Washington
  11. 2.1 12 km NE of Sprague, Washington
  12. 2.1 10 km NNE of Sprague, Washington
  13. 1.8 16 km NNE of Sprague, Washington
  14. 2.1 13 km NNE of Sprague, Washington
  15. 2.0 9 km NE 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.