QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

2 km NE of Sheridan, Oregon

· 28 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yamhill County 15 kmPolk County 24 kmTillamook County 48 kmWashington County 53 kmMarion County 67 kmLincoln County 68 kmBenton County 70 kmMultnomah County 89 kmClackamas County 93 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 2.1 (ml)
Depth
28 km below the surface
Felt
no reports yet
Nearest
Yamhill County, 15 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 554 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 37 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 45.1187, -123.3765. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yamhill County, OR 15 km (9 mi) SSW of here earthquakes near Yamhill County
Polk County, OR 24 km (15 mi) N of here earthquakes near Polk County
Tillamook County, OR 48 km (30 mi) SE of here earthquakes near Tillamook County
Washington County, OR 53 km (33 mi) SSW of here earthquakes near Washington County
Marion County, OR 67 km (42 mi) WNW of here earthquakes near Marion County
Lincoln County, OR 68 km (42 mi) NE of here earthquakes near Lincoln 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 4 km ESE of Rose Lodge, Oregon
  2. 1.8 1 km ESE of Butteville, Oregon
  3. 3.2 3 km ESE of Rose Lodge, Oregon
  4. 1.9 3 km WSW of Dundee, Oregon
  5. 1.6 10 km NNW of Adair Village, Oregon
  6. 2.5 3 km SE of Rose Lodge, Oregon
  7. 1.5 18 km W of Yamhill, Oregon
  8. 1.8 4 km ESE of Rose Lodge, Oregon
  9. 2.5 4 km ESE of Rose Lodge, Oregon
  10. 1.6 21 km E of Tillamook, Oregon
  11. 1.6 9 km NNW of Keizer, Oregon
  12. 1.7 9 km NNW of Keizer, Oregon
  13. 1.8 1 km N of Amity, Oregon
  14. 1.9 5 km ESE of Rose Lodge, Oregon
  15. 1.8 4 km SE of Rose Lodge, 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.