QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

11 km W of Deer Island, Oregon

· 26 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Columbia County 7 kmCowlitz County 39 kmWashington County 42 kmClark County 43 kmWahkiakum County 53 kmClatsop County 56 kmMultnomah County 61 kmTillamook County 79 kmYamhill County 79 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 2.7 (ml)
Depth
26 km below the surface
Felt
11 reports · strongest reported intensity III
Nearest
Columbia County, 7 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 578 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 320 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 45.9212, -122.9928. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Columbia County, OR 7 km (4 mi) ESE of here earthquakes near Columbia County
Cowlitz County, WA 39 km (24 mi) SW of here earthquakes near Cowlitz County
Washington County, OR 42 km (26 mi) N of here earthquakes near Washington County
Clark County, WA 43 km (26 mi) WNW of here earthquakes near Clark County
Wahkiakum County, WA 53 km (33 mi) SE of here earthquakes near Wahkiakum County
Clatsop County, OR 56 km (35 mi) ESE of here earthquakes near Clatsop County

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

Aftershocks so far

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

  1. 1.9 3 km WSW of Cathlamet, Washington
  2. 1.8 5 km WNW of Deer Island, Oregon
  3. 2.3 19 km E of Kelso, Washington
  4. 2.0 19 km E of Kelso, Washington
  5. 1.5 9 km ENE of Kalama, Washington
  6. 1.6 4 km SW of Cathlamet, Washington
  7. 1.6 5 km W of Clatskanie, Oregon
  8. 1.6 17 km WNW of Banks, Oregon
  9. 1.6 3 km NNE of West Haven, Oregon
  10. 1.6 1 km E of Lewisville, Washington
  11. 1.8 7 km WNW of Warren, Oregon
  12. 1.8 5 km NNE of La Center, Washington
  13. 2.0 8 km WNW of Warren, Oregon
  14. 1.7 10 km SSE of Toledo, Washington
  15. 1.7 14 km W of Deer Island, 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.