QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

15 km NNE of Unity, Oregon

· -0.6 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lane County 24 kmLinn County 48 kmBenton County 76 kmMarion County 93 kmDouglas County 95 kmPolk County 108 kmLincoln County 117 kmDeschutes County 118 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 1.7 (ml)
Depth
-0.6 km below the surface
Felt
no reports yet
Nearest
Lane County, 24 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2061 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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 44.0712, -122.6798. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lane County, OR 24 km (15 mi) NE of here earthquakes near Lane County
Linn County, OR 48 km (30 mi) SSW of here earthquakes near Linn County
Benton County, OR 76 km (47 mi) SE of here earthquakes near Benton County
Marion County, OR 93 km (58 mi) S of here earthquakes near Marion County
Douglas County, OR 95 km (59 mi) NNE of here earthquakes near Douglas County
Polk County, OR 108 km (67 mi) SSE of here earthquakes near Polk County

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

Aftershocks so far

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

  1. 0.4 24 km ENE of Unity, Oregon
  2. 1.8 1 km ESE of Springfield, Oregon
  3. 1.7 14 km NE of Springfield, Oregon
  4. 1.6 9 km SSE of Crawfordsville, Oregon
  5. 1.5 4 km SSE of Cascadia, Oregon
  6. 1.5 1 km NNE of Cascadia, Oregon
  7. 2.0 4 km N of Sweet Home, Oregon
  8. 1.6 4 km NW of Brownsville, Oregon
  9. 1.5 3 km S of Brownsville, Oregon
  10. 1.6 22 km N of Unity, Oregon
  11. 2.2 3 km NNW of Sweet Home, Oregon
  12. 1.6 2 km SSE of Sodaville, Oregon
  13. 1.7 29 km SE of Cascadia, Oregon
  14. 1.7 9 km SSW of Holley, Oregon
  15. 1.5 13 km WNW of Cottage Grove, 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.