QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

18 km SSE of Arlington, Oregon

· 19 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Gilliam County 26 kmMorrow County 41 kmSherman County 50 kmKlickitat County 63 kmBenton County 85 kmWheeler County 93 kmWasco County 96 kmUmatilla County 105 kmYakima County 111 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 1.5 (ml)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Gilliam County, 26 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1583 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 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 45.5693, -120.0843. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gilliam County, OR 26 km (16 mi) NE of here earthquakes near Gilliam County
Morrow County, OR 41 km (25 mi) WNW of here earthquakes near Morrow County
Sherman County, OR 50 km (31 mi) ENE of here earthquakes near Sherman County
Klickitat County, WA 63 km (39 mi) ESE of here earthquakes near Klickitat County
Benton County, WA 85 km (53 mi) SSW of here earthquakes near Benton County
Wheeler County, OR 93 km (58 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

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

  1. 2.1 12 km SSE of Bickleton, Washington
  2. 1.5 12 km ENE of Lexington, Oregon
  3. 1.9 7 km SW of Arlington, Oregon
  4. 1.8 3 km E of Lexington, Oregon
  5. 1.8 8 km N of Condon, Oregon
  6. 1.5 4 km SSW of Arlington, Oregon
  7. 1.7 8 km N of Roosevelt, Washington
  8. 1.5 17 km NNE of Roosevelt, Washington
  9. 1.5 13 km NNE of Roosevelt, Washington
  10. 1.9 16 km ENE of Arlington, Oregon
  11. 2.0 8 km SSE of Bickleton, Washington
  12. 2.0 2 km SSE of Arlington, Oregon
  13. 1.6 10 km ENE of Lexington, Oregon
  14. 1.7 8 km SE of Wasco, Oregon
  15. 1.8 17 km ENE of Roosevelt, 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.