QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

12 km SSW of Holley, Oregon

· 13 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lane County 35 kmLinn County 36 kmBenton County 56 kmMarion County 76 kmPolk County 86 kmLincoln County 97 kmDouglas County 110 kmClackamas County 113 kmYamhill County 119 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
13 km below the surface
Felt
no reports yet
Nearest
Lane County, 35 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 910 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 13 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 44.2415, -122.8200. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lane County, OR 35 km (22 mi) N of here earthquakes near Lane County
Linn County, OR 36 km (22 mi) SW of here earthquakes near Linn County
Benton County, OR 56 km (35 mi) ESE of here earthquakes near Benton County
Marion County, OR 76 km (47 mi) SSW of here earthquakes near Marion County
Polk County, OR 86 km (54 mi) SSE of here earthquakes near Polk County
Lincoln County, OR 97 km (60 mi) ESE of here earthquakes near Lincoln 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. 0.4 24 km ENE of Unity, Oregon
  2. 1.5 6 km SSE of Monroe, Oregon
  3. 1.8 1 km ESE of Springfield, Oregon
  4. 1.8 5 km NW of Lacomb, Oregon
  5. 1.6 5 km NW of Lacomb, Oregon
  6. 1.8 5 km SSE of Monroe, Oregon
  7. 1.7 14 km NE of Springfield, Oregon
  8. 2.0 6 km W of Lacomb, Oregon
  9. 1.6 9 km SSE of Crawfordsville, Oregon
  10. 1.5 4 km SSE of Cascadia, Oregon
  11. 1.5 1 km NNE of Cascadia, Oregon
  12. 2.0 4 km N of Sweet Home, Oregon
  13. 1.8 5 km N of Waterloo, Oregon
  14. 1.6 4 km NW of Brownsville, Oregon
  15. 1.5 3 km S of Brownsville, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2022-10-07 — it released about 9,100 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.