QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

5 km N of West Haven, Oregon

· 16 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 25 kmMultnomah County 28 kmClark County 32 kmColumbia County 48 kmYamhill County 55 kmClackamas County 64 kmCowlitz County 71 kmMarion County 75 kmTillamook County 78 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
16 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 384 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 16 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 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 45.5635, -122.7717. 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 32 km (20 mi) SW of here earthquakes near Clark County
Columbia County, OR 48 km (30 mi) SSE of here earthquakes near Columbia County
Yamhill County, OR 55 km (34 mi) NE of here earthquakes near Yamhill County
Clackamas County, OR 64 km (39 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

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

  1. 1.5 5 km NNW of Venersborg, Washington
  2. 2.0 10 km SSE of Scappoose, Oregon
  3. 1.6 5 km WSW of Yacolt, Washington
  4. 1.8 4 km WSW of Yacolt, Washington
  5. 2.1 4 km W of Yacolt, Washington
  6. 1.6 8 km SW of Vernonia, Oregon
  7. 1.8 3 km E of Kalama, Washington
  8. 1.5 3 km WSW of Kalama, Washington
  9. 1.6 2 km NE of Lewisville, Washington
  10. 2.1 4 km WSW of Yacolt, Washington
  11. 1.9 1 km SE of Vancouver, Washington
  12. 1.6 5 km SSW of Yacolt, Washington
  13. 1.5 2 km SSW of Yacolt, Washington
  14. 1.5 5 km WNW of King City, Oregon
  15. 1.7 3 km NW of Venersborg, 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.