QuakeIndex

explosion · reviewed by a seismologist

M 2.0ml

4 km W of Mehama, Oregon

· -0.4 km deep · released about 27 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Marion County 14 kmLinn County 36 kmClackamas County 55 kmPolk County 59 kmBenton County 69 kmYamhill County 71 kmMultnomah County 86 kmWashington County 91 kmLane County 98 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 2.0 (ml)
Depth
-0.4 km below the surface
Felt
no reports yet
Nearest
Marion County, 14 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1745 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 27 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 560,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 390,000× the energy of this one
  3. Around the size people start to feel M 3.0 35× the energy of this one
  4. This earthquake M 2.0 about 27 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 44.7960, -122.6700. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Marion County, OR 14 km (9 mi) SSW of here earthquakes near Marion County
Linn County, OR 36 km (22 mi) NNW of here earthquakes near Linn County
Clackamas County, OR 55 km (34 mi) SW of here earthquakes near Clackamas County
Polk County, OR 59 km (36 mi) E of here earthquakes near Polk County
Benton County, OR 69 km (43 mi) ENE of here earthquakes near Benton County
Yamhill County, OR 71 km (44 mi) SE of here earthquakes near Yamhill County

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

Aftershocks so far

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

  1. 1.8 6 km ENE of Lebanon, Oregon
  2. 1.9 15 km SE of Scotts Mills, Oregon
  3. 1.7 3 km SSW of Scotts Mills, Oregon
  4. 1.6 7 km ESE of Scotts Mills, Oregon
  5. 1.5 5 km W of Mehama, Oregon
  6. 1.9 2 km ENE of Silverton, Oregon
  7. 1.6 2 km N of Woodburn, Oregon
  8. 1.6 3 km NW of Waterloo, Oregon
  9. 1.6 2 km ESE of Sodaville, Oregon
  10. 1.6 5 km N of Waterloo, Oregon
  11. 2.0 5 km NNE of Sweet Home, Oregon
  12. 1.6 15 km N of Cascadia, Oregon
  13. 1.7 Oregon
  14. 2.1 Oregon
  15. 2.0 3 km ENE of Millersburg, 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.