QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

10 km W of Vernonia, Oregon

· 11 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Columbia County 21 kmClatsop County 35 kmWashington County 38 kmWahkiakum County 49 kmTillamook County 56 kmCowlitz County 63 kmClark County 66 kmYamhill County 68 kmMultnomah 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 1.5 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Columbia County, 21 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1228 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 45.8560, -123.3243. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Columbia County, OR 21 km (13 mi) WSW of here earthquakes near Columbia County
Clatsop County, OR 35 km (22 mi) ESE of here earthquakes near Clatsop County
Washington County, OR 38 km (24 mi) NNW of here earthquakes near Washington County
Wahkiakum County, WA 49 km (31 mi) S of here earthquakes near Wahkiakum County
Tillamook County, OR 56 km (35 mi) NE of here earthquakes near Tillamook County
Cowlitz County, WA 63 km (39 mi) SW of here earthquakes near Cowlitz County

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

Aftershocks so far

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

  1. 1.6 13 km NE of Vernonia, Oregon
  2. 1.6 13 km E of Wheeler, Oregon
  3. 1.6 2 km NNE of Columbia City, Oregon
  4. 1.8 8 km SW of Scappoose, Oregon
  5. 2.2 2 km SSW of Banks, Oregon
  6. 2.0 16 km W of Forest Grove, Oregon
  7. 1.6 21 km W of Forest Grove, Oregon
  8. 1.9 5 km NW of Westport, Oregon
  9. 1.6 10 km WSW of Felida, Washington
  10. 1.6 3 km ENE of East Cathlamet, Washington
  11. 2.1 1 km ESE of Banks, Oregon
  12. 1.6 5 km ENE of Prescott, Oregon
  13. 1.5 8 km NNE of Nehalem, Oregon
  14. 1.6 1 km WSW of Kalama, Washington
  15. 1.9 4 km SW of Cathlamet, 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.