QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

23 km SW of Westport, Oregon

· 20 km deep · released about 56 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clatsop County 10 kmWahkiakum County 37 kmColumbia County 40 kmTillamook County 60 kmWashington County 62 kmPacific County 65 kmCowlitz County 74 kmYamhill County 85 kmClark County 89 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 2.2 (ml)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Clatsop County, 10 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2119 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 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 45.9873, -123.5923. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clatsop County, OR 10 km (6 mi) ESE of here earthquakes near Clatsop County
Wahkiakum County, WA 37 km (23 mi) SSW of here earthquakes near Wahkiakum County
Columbia County, OR 40 km (25 mi) W of here earthquakes near Columbia County
Tillamook County, OR 60 km (38 mi) NNE of here earthquakes near Tillamook County
Washington County, OR 62 km (38 mi) NW of here earthquakes near Washington County
Pacific County, WA 65 km (40 mi) SSE of here earthquakes near Pacific County

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

Aftershocks so far

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

  1. 1.6 8 km SW of Vernonia, Oregon
  2. 1.5 11 km ENE of East Cathlamet, Washington
  3. 1.6 15 km ESE of Wheeler, Oregon
  4. 1.6 6 km NNW of Clatskanie, Oregon
  5. 1.6 9 km E of Wheeler, Oregon
  6. 1.6 3 km E of East Cathlamet, Washington
  7. 1.6 14 km ENE of East Cathlamet, Washington
  8. 1.7 8 km SW of Vernonia, Oregon
  9. 1.9 13 km NW of West Longview, Washington
  10. 1.6 13 km NE of Vernonia, Oregon
  11. 1.6 13 km E of Wheeler, Oregon
  12. 1.9 5 km NW of Westport, Oregon
  13. 1.6 3 km ENE of East Cathlamet, Washington
  14. 1.5 8 km NNE of Nehalem, Oregon
  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.