QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

21 km S of Arlington, Oregon

· 16 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Gilliam County 18 kmSherman County 42 kmMorrow County 46 kmKlickitat County 61 kmWasco County 87 kmWheeler County 88 kmBenton County 93 kmUmatilla County 112 kmYakima County 113 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 1.9 (ml)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Gilliam County, 18 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2509 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 45.5238, -120.1738. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gilliam County, OR 18 km (11 mi) NNE of here earthquakes near Gilliam County
Sherman County, OR 42 km (26 mi) ENE of here earthquakes near Sherman County
Morrow County, OR 46 km (29 mi) WNW of here earthquakes near Morrow County
Klickitat County, WA 61 km (38 mi) SE of here earthquakes near Klickitat County
Wasco County, OR 87 km (54 mi) ENE of here earthquakes near Wasco County
Wheeler County, OR 88 km (55 mi) N of here earthquakes near Wheeler County

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

Aftershocks so far

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

  1. 2.1 12 km SSE of Bickleton, Washington
  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 8 km SSE of Bickleton, Washington
  11. 2.0 2 km SSE of Arlington, Oregon
  12. 1.7 8 km SE of Wasco, Oregon
  13. 1.8 17 km ENE of Roosevelt, Washington
  14. 1.8 6 km SW of Arlington, Oregon
  15. 2.2 19 km S of Arlington, 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.