QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

1 km ESE of Butteville, Oregon

· 21 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yamhill County 38 kmWashington County 39 kmMarion County 44 kmMultnomah County 45 kmClackamas County 51 kmPolk County 60 kmClark County 63 kmTillamook County 76 kmColumbia County 79 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 1.8 (ml)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Yamhill County, 38 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2146 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 45.2585, -122.8272. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yamhill County, OR 38 km (24 mi) E of here earthquakes near Yamhill County
Washington County, OR 39 km (24 mi) SSE of here earthquakes near Washington County
Marion County, OR 44 km (28 mi) NNW of here earthquakes near Marion County
Multnomah County, OR 45 km (28 mi) SW of here earthquakes near Multnomah County
Clackamas County, OR 51 km (32 mi) WNW of here earthquakes near Clackamas County
Polk County, OR 60 km (37 mi) NE of here earthquakes near Polk County

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

Aftershocks so far

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

  1. 1.6 5 km SSW of Scotts Mills, Oregon
  2. 1.7 17 km SE of Molalla, Oregon
  3. 1.8 2 km NW of King City, Oregon
  4. 1.7 13 km S of Estacada, Oregon
  5. 2.3 2 km SW of Lake Shore, Washington
  6. 2.5 3 km SW of Lake Shore, Washington
  7. 2.3 0 km S of Banks, Oregon
  8. 1.6 3 km SW of Lake Shore, Washington
  9. 1.5 6 km NW of North Portland, Oregon
  10. 1.5 1 km NW of Wilsonville, Oregon
  11. 1.7 6 km ESE of Molalla, Oregon
  12. 1.8 8 km S of Scappoose, Oregon
  13. 1.7 13 km ESE of Scotts Mills, Oregon
  14. 1.7 8 km SE of Molalla, Oregon
  15. 1.6 3 km ESE of Sherwood, 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.