QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

4 km NNW of Sweet Home, Oregon

· 11 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Linn County 19 kmBenton County 52 kmMarion County 54 kmLane County 57 kmPolk County 72 kmClackamas County 92 kmLincoln County 93 kmYamhill County 100 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
11 km below the surface
Felt
no reports yet
Nearest
Linn County, 19 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1781 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 5.6 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 2,700,000× 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 5.6 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 44.4353, -122.7687. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Linn County, OR 19 km (12 mi) WSW of here earthquakes near Linn County
Benton County, OR 52 km (33 mi) E of here earthquakes near Benton County
Marion County, OR 54 km (34 mi) SSW of here earthquakes near Marion County
Lane County, OR 57 km (36 mi) N of here earthquakes near Lane County
Polk County, OR 72 km (45 mi) SE of here earthquakes near Polk County
Clackamas County, OR 92 km (57 mi) SSW of here earthquakes near Clackamas County

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

Aftershocks so far

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

  1. 1.5 3 km S of Brownsville, Oregon
  2. 1.6 22 km N of Unity, Oregon
  3. 2.1 2 km WSW of Jefferson, Oregon
  4. 1.9 5 km ENE of Lebanon, Oregon
  5. 1.7 5 km W of Mehama, Oregon
  6. 2.2 3 km NNW of Sweet Home, Oregon
  7. 1.6 2 km SSE of Sodaville, Oregon
  8. 1.7 29 km SE of Cascadia, Oregon
  9. 1.6 6 km SSE of Monroe, Oregon
  10. 1.7 9 km SSW of Holley, Oregon
  11. 1.6 6 km SSE of Monroe, Oregon
  12. 1.7 1 km SSE of Turner, Oregon
  13. 1.6 1 km W of Turner, Oregon
  14. 1.8 6 km ENE of Lebanon, Oregon
  15. 1.8 12 km SSW of Holley, 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.