QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

19 km WSW of Westport, Oregon

· 23 km deep · released about 9.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clatsop County 8 kmWahkiakum County 31 kmColumbia County 42 kmPacific County 58 kmTillamook County 67 kmWashington County 67 kmCowlitz County 73 kmClark County 92 kmYamhill County 92 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 1.7 (ml)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Clatsop County, 8 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 635 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 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 46.0482, -123.6005. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clatsop County, OR 8 km (5 mi) ENE of here earthquakes near Clatsop County
Wahkiakum County, WA 31 km (19 mi) SSW of here earthquakes near Wahkiakum County
Columbia County, OR 42 km (26 mi) WNW of here earthquakes near Columbia County
Pacific County, WA 58 km (36 mi) SSE of here earthquakes near Pacific County
Tillamook County, OR 67 km (42 mi) N of here earthquakes near Tillamook County
Washington County, OR 67 km (42 mi) NW of here earthquakes near Washington County

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

Aftershocks so far

17 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 12 km SW of Lebam, Washington
  13. 1.9 5 km NW of Westport, Oregon
  14. 1.6 3 km ENE of East Cathlamet, Washington
  15. 1.5 8 km NNE of Nehalem, 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

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