QuakeIndex

explosion · reviewed by a seismologist

M 2.0ml

13 km SW of Sprague, Washington

· -0.4 km deep · released about 32 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adams County 39 kmLincoln County 45 kmWhitman County 57 kmSpokane County 69 kmFranklin County 98 kmGarfield County 100 kmGrant County 102 kmColumbia County 106 kmWalla Walla County 112 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 2.0 (ml)
Depth
-0.4 km below the surface
Felt
no reports yet
Nearest
Adams County, 39 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1810 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 32 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 470,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 330,000× the energy of this one
  3. Around the size people start to feel M 3.0 30× the energy of this one
  4. This earthquake M 2.0 about 32 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 47.2328, -118.1218. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adams County, WA 39 km (24 mi) NE of here earthquakes near Adams County
Lincoln County, WA 45 km (28 mi) SSE of here earthquakes near Lincoln County
Whitman County, WA 57 km (36 mi) NW of here earthquakes near Whitman County
Spokane County, WA 69 km (43 mi) SW of here earthquakes near Spokane County
Franklin County, WA 98 km (61 mi) NE of here earthquakes near Franklin County
Garfield County, WA 100 km (62 mi) NNW of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 1.9 6 km ENE of Sprague, Washington
  2. 1.9 5 km ENE of Sprague, Washington
  3. 2.3 8 km NE of Sprague, Washington
  4. 2.5 8 km ENE of Sprague, Washington
  5. 2.0 6 km ENE of Sprague, Washington
  6. 2.4 7 km ENE of Sprague, Washington
  7. 1.9 4 km ENE of Ritzville, Washington
  8. 2.4 9 km NE of Sprague, Washington
  9. 1.7 7 km NE of Sprague, Washington
  10. 2.5 9 km NE of Sprague, Washington
  11. 2.1 5 km ENE of Sprague, Washington
  12. 2.1 6 km NE of Sprague, Washington
  13. 2.3 8 km NE of Sprague, Washington
  14. 2.2 8 km NE of Sprague, Washington
  15. 2.3 8 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.