QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

12 km NNW of Mehama, Oregon

· 18 km deep · released about 110 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Marion County 6 kmClackamas County 46 kmLinn County 47 kmPolk County 58 kmYamhill County 65 kmMultnomah County 75 kmBenton County 76 kmWashington County 81 kmClark 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 2.4 (ml)
Depth
18 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Marion County, 6 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3483 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 8 people have reported feeling it to USGS.

How big was it?

This earthquake released about 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 95,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.5× the energy of this one
  4. This earthquake M 2.4 about 110 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 44.8987, -122.6565. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Marion County, OR 6 km (4 mi) W of here earthquakes near Marion County
Clackamas County, OR 46 km (29 mi) SW of here earthquakes near Clackamas County
Linn County, OR 47 km (29 mi) NNW of here earthquakes near Linn County
Polk County, OR 58 km (36 mi) E of here earthquakes near Polk County
Yamhill County, OR 65 km (40 mi) SE of here earthquakes near Yamhill County
Multnomah County, OR 75 km (46 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

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

  1. 1.6 16 km E of Lacomb, Oregon
  2. 1.8 3 km S of Amity, Oregon
  3. 1.6 7 km S of Dayton, Oregon
  4. 1.7 4 km SSE of Scotts Mills, Oregon
  5. 1.5 7 km SE of Crabtree, Oregon
  6. 1.6 7 km SSE of Molalla, Oregon
  7. 2.0 7 km SE of Molalla, Oregon
  8. 1.9 2 km WNW of Mehama, Oregon
  9. 1.6 7 km ESE of Molalla, Oregon
  10. 1.8 8 km SE of Molalla, Oregon
  11. 1.6 23 km ESE of Molalla, Oregon
  12. 1.6 4 km N of Waterloo, Oregon
  13. 1.9 7 km SE of Silverton, Oregon
  14. 1.5 7 km E of Lacomb, Oregon
  15. 2.1 8 km SE of Molalla, 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.