QuakeIndex

explosion · reviewed by a seismologist

M 2.3ml

19 km WSW of Ione, Oregon

· -0.3 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Gilliam County 18 kmMorrow County 35 kmSherman County 49 kmKlickitat County 74 kmWheeler County 78 kmWasco County 92 kmBenton County 98 kmUmatilla County 105 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 2.3 (ml)
Depth
-0.3 km below the surface
Felt
no reports yet
Nearest
Gilliam County, 18 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3236 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 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 45.4332, -120.0563. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gilliam County, OR 18 km (11 mi) ENE of here earthquakes near Gilliam County
Morrow County, OR 35 km (22 mi) W of here earthquakes near Morrow County
Sherman County, OR 49 km (30 mi) E of here earthquakes near Sherman County
Klickitat County, WA 74 km (46 mi) SE of here earthquakes near Klickitat County
Wheeler County, OR 78 km (48 mi) N of here earthquakes near Wheeler County
Wasco County, OR 92 km (57 mi) ENE of here earthquakes near Wasco County

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

Aftershocks so far

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

  1. 1.5 12 km ENE of Lexington, Oregon
  2. 1.9 7 km SW of Arlington, Oregon
  3. 1.8 3 km E of Lexington, Oregon
  4. 1.8 8 km N of Condon, Oregon
  5. 1.5 4 km SSW of Arlington, Oregon
  6. 1.7 8 km N of Roosevelt, Washington
  7. 1.5 17 km NNE of Roosevelt, Washington
  8. 1.5 13 km NNE of Roosevelt, Washington
  9. 1.9 16 km ENE of Arlington, Oregon
  10. 2.0 2 km SSE of Arlington, Oregon
  11. 1.6 10 km ENE of Lexington, Oregon
  12. 1.8 17 km ENE of Roosevelt, Washington
  13. 1.8 6 km SW of Arlington, Oregon
  14. 2.2 19 km S of Arlington, Oregon
  15. 1.6 9 km NE of Ione, Oregon

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.