QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

1 km N of West Haven, Oregon

· 25 km deep · released about 8.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 25 kmMultnomah County 28 kmClark County 34 kmColumbia County 51 kmYamhill County 53 kmClackamas County 61 kmMarion County 72 kmCowlitz County 74 kmTillamook County 77 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 1.6 (ml)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Washington County, 25 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2680 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 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 45.5343, -122.7713. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washington County, OR 25 km (16 mi) E of here earthquakes near Washington County
Multnomah County, OR 28 km (17 mi) W of here earthquakes near Multnomah County
Clark County, WA 34 km (21 mi) SW of here earthquakes near Clark County
Columbia County, OR 51 km (32 mi) SSE of here earthquakes near Columbia County
Yamhill County, OR 53 km (33 mi) NE of here earthquakes near Yamhill County
Clackamas County, OR 61 km (38 mi) NW of here earthquakes near Clackamas County

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

Aftershocks so far

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

  1. 1.5 13 km ENE of Vernonia, Oregon
  2. 1.7 3 km SSW of Yacolt, Washington
  3. 1.7 3 km NNE of Deer Island, Oregon
  4. 1.8 3 km N of Wilsonville, Oregon
  5. 1.8 4 km SW of North Portland, Oregon
  6. 1.9 4 km ENE of Lafayette, Oregon
  7. 1.5 0 km W of Garden Home-Whitford, Oregon
  8. 1.5 5 km ENE of Lewisville, Washington
  9. 1.5 0 km N of Tigard, Oregon
  10. 1.8 2 km S of Saint Helens, Oregon
  11. 1.6 5 km E of Lewisville, Washington
  12. 1.5 3 km E of Lewisville, Washington
  13. 1.8 2 km SW of Tualatin, Oregon
  14. 1.8 1 km ESE of Butteville, Oregon
  15. 1.7 4 km SE of Kalama, Washington

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.