QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

19 km WSW of Vernonia, Oregon

· 16 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Columbia County 32 kmClatsop County 34 kmWashington County 36 kmTillamook County 45 kmWahkiakum County 57 kmYamhill County 61 kmClark County 73 kmCowlitz County 74 kmMultnomah County 83 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 1.9 (ml)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Columbia County, 32 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 791 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 45.7865, -123.4285. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Columbia County, OR 32 km (20 mi) WSW of here earthquakes near Columbia County
Clatsop County, OR 34 km (21 mi) SE of here earthquakes near Clatsop County
Washington County, OR 36 km (23 mi) NW of here earthquakes near Washington County
Tillamook County, OR 45 km (28 mi) NE of here earthquakes near Tillamook County
Wahkiakum County, WA 57 km (35 mi) S of here earthquakes near Wahkiakum County
Yamhill County, OR 61 km (38 mi) N of here earthquakes near Yamhill County

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

Aftershocks so far

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

  1. 1.6 15 km ESE of Wheeler, Oregon
  2. 1.6 6 km NNW of Clatskanie, Oregon
  3. 1.6 9 km E of Wheeler, Oregon
  4. 1.6 3 km E of East Cathlamet, Washington
  5. 2.1 8 km S of Scappoose, Oregon
  6. 1.7 8 km SW of Vernonia, Oregon
  7. 1.6 13 km NE of Vernonia, Oregon
  8. 1.6 13 km E of Wheeler, Oregon
  9. 1.8 8 km SW of Scappoose, Oregon
  10. 2.2 2 km SSW of Banks, Oregon
  11. 2.0 16 km W of Forest Grove, Oregon
  12. 1.6 21 km W of Forest Grove, Oregon
  13. 1.9 5 km NW of Westport, Oregon
  14. 1.6 3 km ENE of East Cathlamet, Washington
  15. 2.1 1 km ESE of Banks, 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.