QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

1 km ESE of Banks, Oregon

· -0.4 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 7 kmColumbia County 37 kmYamhill County 44 kmClark County 51 kmMultnomah County 53 kmTillamook County 54 kmClatsop County 66 kmCowlitz County 73 kmWahkiakum County 80 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
-0.4 km below the surface
Felt
no reports yet
Nearest
Washington County, 7 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 506 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 46 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 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 45.6125, -123.0970. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washington County, OR 7 km (4 mi) N of here earthquakes near Washington County
Columbia County, OR 37 km (23 mi) S of here earthquakes near Columbia County
Yamhill County, OR 44 km (27 mi) NNE of here earthquakes near Yamhill County
Clark County, WA 51 km (31 mi) WSW of here earthquakes near Clark County
Multnomah County, OR 53 km (33 mi) W of here earthquakes near Multnomah County
Tillamook County, OR 54 km (34 mi) ENE of here earthquakes near Tillamook County

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

Aftershocks so far

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

  1. 2.0 10 km SSE of Scappoose, Oregon
  2. 1.6 8 km SW of Vernonia, Oregon
  3. 1.8 3 km E of Kalama, Washington
  4. 1.5 3 km WSW of Kalama, Washington
  5. 1.9 1 km SE of Vancouver, Washington
  6. 1.9 21 km W of Forest Grove, Oregon
  7. 2.0 7 km WNW of McMinnville, Oregon
  8. 1.5 5 km WNW of King City, Oregon
  9. 2.0 2 km WNW of Dundee, Oregon
  10. 1.9 2 km WNW of Saint Helens, Oregon
  11. 1.6 2 km WSW of Stafford, Oregon
  12. 2.1 8 km S of Scappoose, Oregon
  13. 1.7 8 km SW of Vernonia, Oregon
  14. 1.9 1 km ESE of North Portland, Oregon
  15. 1.6 8 km S of Scappoose, 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.