QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

14 km W of Deer Island, Oregon

· 15 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Columbia County 4 kmCowlitz County 38 kmWashington County 44 kmClark County 46 kmWahkiakum County 49 kmClatsop County 53 kmMultnomah County 65 kmTillamook County 79 kmYamhill County 81 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
15 km below the surface
Felt
no reports yet
Nearest
Columbia County, 4 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 776 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 10 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 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× the energy of this one
  4. This earthquake M 1.7 about 10 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 45.9505, -123.0285. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Columbia County, OR 4 km (3 mi) ENE of here earthquakes near Columbia County
Cowlitz County, WA 38 km (24 mi) SW of here earthquakes near Cowlitz County
Washington County, OR 44 km (28 mi) N of here earthquakes near Washington County
Clark County, WA 46 km (29 mi) WNW of here earthquakes near Clark County
Wahkiakum County, WA 49 km (30 mi) SE of here earthquakes near Wahkiakum County
Clatsop County, OR 53 km (33 mi) E of here earthquakes near Clatsop County

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

Aftershocks so far

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

  1. 1.6 10 km SSE of Toledo, Washington
  2. 1.8 10 km NE of Castle Rock, Washington
  3. 1.6 6 km NNW of Clatskanie, Oregon
  4. 1.5 10 km NE of Castle Rock, Washington
  5. 1.6 7 km NE of Castle Rock, Washington
  6. 1.7 10 km NE of Castle Rock, Washington
  7. 2.1 18 km N of Amboy, Washington
  8. 1.9 2 km WNW of Saint Helens, Oregon
  9. 1.6 3 km E of East Cathlamet, Washington
  10. 1.6 14 km ENE of East Cathlamet, Washington
  11. 2.1 8 km S of Scappoose, Oregon
  12. 1.7 8 km SW of Vernonia, Oregon
  13. 1.5 10 km SSE of Toledo, Washington
  14. 1.9 1 km ESE of North Portland, Oregon
  15. 1.9 13 km NW of West Longview, 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.