QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

3 km S of Amity, Oregon

· 14 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yamhill County 20 kmPolk County 26 kmWashington County 53 kmMarion County 53 kmTillamook County 60 kmBenton County 68 kmLincoln County 75 kmClackamas County 79 kmMultnomah County 80 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 1.8 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Yamhill County, 20 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2636 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 45.0843, -123.2010. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yamhill County, OR 20 km (13 mi) SSE of here earthquakes near Yamhill County
Polk County, OR 26 km (16 mi) NE of here earthquakes near Polk County
Washington County, OR 53 km (33 mi) S of here earthquakes near Washington County
Marion County, OR 53 km (33 mi) WNW of here earthquakes near Marion County
Tillamook County, OR 60 km (37 mi) SE of here earthquakes near Tillamook County
Benton County, OR 68 km (42 mi) NNE of here earthquakes near Benton County

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

Aftershocks so far

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

  1. 1.8 23 km W of Yamhill, Oregon
  2. 1.5 1 km NW of Wilsonville, Oregon
  3. 1.6 3 km ESE of Sherwood, Oregon
  4. 1.7 4 km ESE of Silverton, Oregon
  5. 1.9 3 km NNE of Hubbard, Oregon
  6. 1.7 Washington-Oregon border region
  7. 1.7 5 km SSW of Saint Paul, Oregon
  8. 1.6 8 km SW of Aloha, Oregon
  9. 1.6 5 km E of Hubbard, Oregon
  10. 1.6 12 km ESE of Hebo, Oregon
  11. 1.6 3 km S of Fort Hill Census Designated Place, Oregon
  12. 1.8 3 km W of Saint Paul, Oregon
  13. 1.9 Oregon
  14. 1.7 8 km SE of Amity, Oregon
  15. 2.0 4 km WNW of Dundee, 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.