QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

14 km ENE of Halfway, Oregon

· 3.6 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adams County 39 kmWashington County 56 kmBaker County 64 kmWallowa County 75 kmUnion County 92 kmValley County 105 kmPayette County 106 kmGem County 107 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 2.5 (ml)
Depth
3.6 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Adams County, 39 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3127 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 44.9417, -116.9494. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adams County, ID 39 km (24 mi) W of here earthquakes near Adams County
Washington County, ID 56 km (35 mi) NNW of here earthquakes near Washington County
Baker County, OR 64 km (40 mi) ENE of here earthquakes near Baker County
Wallowa County, OR 75 km (46 mi) SSE of here earthquakes near Wallowa County
Union County, OR 92 km (57 mi) ESE of here earthquakes near Union County
Valley County, ID 105 km (65 mi) W of here earthquakes near Valley County

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

Aftershocks so far

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

  1. 2.3 9 km E of Halfway, Oregon
  2. 2.1 17 km NNW of Halfway, Oregon
  3. 1.9 17 km NW of New Meadows, Idaho
  4. 2.1 19 km NNW of Halfway, Oregon
  5. 2.4 16 km E of Richland, Oregon
  6. 2.2 11 km ESE of Halfway, Oregon
  7. 1.5 20 km NW of New Meadows, Idaho
  8. 2.0 17 km NW of New Meadows, Idaho
  9. 2.4 21 km NW of New Meadows, Idaho
  10. 1.9 23 km ESE of Halfway, Oregon
  11. 2.7 21 km NW of Halfway, Oregon
  12. 2.3 19 km NW of New Meadows, Idaho
  13. 2.0 33 km NE of Halfway, Oregon
  14. 1.8 11 km ESE of Halfway, Oregon
  15. 2.3 15 km SE of Halfway, 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.