QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

6 km SSE of Silverton, Oregon

· 18 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Marion County 15 kmClackamas County 50 kmPolk County 51 kmLinn County 54 kmYamhill County 55 kmMultnomah County 72 kmWashington County 73 kmBenton County 73 kmClark County 94 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 3.1 (ml)
Depth
18 km below the surface
Felt
240 reports · strongest reported intensity III
Nearest
Marion County, 15 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2762 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 240 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 270,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,500× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× more

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 44.9455, -122.7558. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Marion County, OR 15 km (9 mi) WNW of here earthquakes near Marion County
Clackamas County, OR 50 km (31 mi) WSW of here earthquakes near Clackamas County
Polk County, OR 51 km (32 mi) E of here earthquakes near Polk County
Linn County, OR 54 km (33 mi) NNW of here earthquakes near Linn County
Yamhill County, OR 55 km (34 mi) SE of here earthquakes near Yamhill County
Multnomah County, OR 72 km (45 mi) SSW of here earthquakes near Multnomah County

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

Aftershocks so far

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

  1. 2.0 4 km E of Scotts Mills, Oregon
  2. 2.2 3 km W of Mehama, Oregon
  3. 1.8 Washington-Oregon border region
  4. 1.6 7 km E of Molalla, Oregon
  5. 1.6 2 km E of Sherwood, Oregon
  6. 1.9 5 km SE of Silverton, Oregon
  7. 1.8 9 km ESE of Scotts Mills, OR
  8. 1.7 6 km SSE of Lacomb, Oregon
  9. 1.9 3 km WSW of Dundee, Oregon
  10. 1.6 10 km NNW of Adair Village, Oregon
  11. 1.6 4 km N of Waterloo, Oregon
  12. 1.8 8 km SE of Molalla, Oregon
  13. 2.0 3 km W of Mehama, Oregon
  14. 2.4 3 km WNW of Molalla, Oregon
  15. 2.6 6 km ESE of Scotts Mills, 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.