QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

6 km W of Lacomb, Oregon

· -0.5 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Linn County 26 kmMarion County 40 kmBenton County 48 kmPolk County 57 kmLane County 74 kmClackamas County 81 kmYamhill County 83 kmLincoln County 86 kmWashington County 109 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 1.6 (ml)
Depth
-0.5 km below the surface
Felt
no reports yet
Nearest
Linn County, 26 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 567 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 44.5883, -122.8300. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Linn County, OR 26 km (16 mi) WNW of here earthquakes near Linn County
Marion County, OR 40 km (25 mi) SSW of here earthquakes near Marion County
Benton County, OR 48 km (30 mi) ENE of here earthquakes near Benton County
Polk County, OR 57 km (35 mi) SE of here earthquakes near Polk County
Lane County, OR 74 km (46 mi) N of here earthquakes near Lane County
Clackamas County, OR 81 km (50 mi) SW of here earthquakes near Clackamas County

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

Aftershocks so far

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

  1. 1.9 5 km ENE of Lebanon, Oregon
  2. 1.7 5 km W of Mehama, Oregon
  3. 1.7 11 km SE of Silverton, Oregon
  4. 2.2 3 km NNW of Sweet Home, Oregon
  5. 1.6 2 km SSE of Sodaville, Oregon
  6. 1.7 9 km SSW of Holley, Oregon
  7. 1.5 3 km SSW of Scotts Mills, Oregon
  8. 2.1 14 km SSE of Scotts Mills, Oregon
  9. 1.7 1 km SSE of Turner, Oregon
  10. 1.6 1 km W of Turner, Oregon
  11. 1.8 6 km ENE of Lebanon, Oregon
  12. 1.8 12 km SSW of Holley, Oregon
  13. 1.9 15 km SE of Scotts Mills, Oregon
  14. 1.7 3 km SSW of Scotts Mills, Oregon
  15. 1.5 5 km W of Mehama, 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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