QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

7 km SE of Silverton, Oregon

· 18 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Marion County 13 kmClackamas County 46 kmPolk County 54 kmLinn County 55 kmYamhill County 57 kmMultnomah County 69 kmWashington County 72 kmBenton County 76 kmClark County 92 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 1.9 (ml)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Marion County, 13 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2845 days ago

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

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 44.9627, -122.7167. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Marion County, OR 13 km (8 mi) WNW of here earthquakes near Marion County
Clackamas County, OR 46 km (29 mi) WSW of here earthquakes near Clackamas County
Polk County, OR 54 km (34 mi) E of here earthquakes near Polk County
Linn County, OR 55 km (34 mi) NNW of here earthquakes near Linn County
Yamhill County, OR 57 km (35 mi) SE of here earthquakes near Yamhill County
Multnomah County, OR 69 km (43 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. 1.7 3 km SSW of Scotts Mills, Oregon
  2. 1.9 4 km ENE of Lafayette, Oregon
  3. 2.8 2 km W of Mehama, Oregon
  4. 1.8 8 km SE of Molalla, Oregon
  5. 1.9 8 km SE of Scotts Mills, Oregon
  6. 1.7 4 km SSW of Scotts Mills, Oregon
  7. 1.5 6 km SSE of Molalla, Oregon
  8. 1.6 13 km ESE of Lacomb, Oregon
  9. 1.8 10 km N of Mill City, Oregon
  10. 1.7 3 km SW of Scotts Mills, Oregon
  11. 1.7 7 km SE of Crabtree, Oregon
  12. 1.6 21 km ESE of Molalla, Oregon
  13. 2.0 7 km ESE of Molalla, Oregon
  14. 1.8 2 km SW of Tualatin, Oregon
  15. 1.8 1 km ESE of Butteville, 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.