QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

15 km WNW of Cottage Grove, Oregon

· -0.7 km deep · released about 9.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lane County 27 kmDouglas County 65 kmBenton County 71 kmLinn County 88 kmLincoln County 102 kmCoos County 103 kmPolk County 116 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
-0.7 km below the surface
Felt
no reports yet
Nearest
Lane County, 27 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 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 9.6 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 43.8687, -123.2267. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lane County, OR 27 km (17 mi) WSW of here earthquakes near Lane County
Douglas County, OR 65 km (40 mi) N of here earthquakes near Douglas County
Benton County, OR 71 km (44 mi) SSE of here earthquakes near Benton County
Linn County, OR 88 km (55 mi) SW of here earthquakes near Linn County
Lincoln County, OR 102 km (63 mi) SSE of here earthquakes near Lincoln County
Coos County, OR 103 km (64 mi) NE of here earthquakes near Coos County

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

Aftershocks so far

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

  1. 1.5 6 km SSE of Monroe, Oregon
  2. 1.8 1 km ESE of Springfield, Oregon
  3. 1.8 5 km SSE of Monroe, Oregon
  4. 1.6 9 km SSW of Cottage Grove, Oregon
  5. 1.7 14 km NE of Springfield, Oregon
  6. 1.6 22 km N of Unity, Oregon
  7. 1.7 2 km SW of Drain, Oregon
  8. 1.7 1 km S of Drain, Oregon
  9. 2.0 3 km SW of Drain, Oregon
  10. 1.7 28 km ESE of Florence, Oregon
  11. 1.7 13 km S of Culp Creek, Oregon
  12. 1.6 6 km SSE of Monroe, Oregon
  13. 1.6 6 km SSE of Monroe, Oregon
  14. 1.5 7 km SSW of Cottage Grove, Oregon
  15. 1.6 2 km SW of Drain, 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

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