QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

4 km WSW of Deer Island, Oregon

· 20 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Columbia County 15 kmClark County 35 kmCowlitz County 36 kmWashington County 43 kmMultnomah County 54 kmWahkiakum County 59 kmClatsop County 64 kmSkamania County 73 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 3.1 (ml)
Depth
20 km below the surface
Felt
202 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Columbia County, 15 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 263 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 202 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 260,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,200× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× more

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 45.9098, -122.8897. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Columbia County, OR 15 km (9 mi) ESE of here earthquakes near Columbia County
Clark County, WA 35 km (22 mi) WNW of here earthquakes near Clark County
Cowlitz County, WA 36 km (22 mi) SSW of here earthquakes near Cowlitz County
Washington County, OR 43 km (27 mi) NNE of here earthquakes near Washington County
Multnomah County, OR 54 km (34 mi) NW of here earthquakes near Multnomah County
Wahkiakum County, WA 59 km (37 mi) SE of here earthquakes near Wahkiakum County

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

Aftershocks so far

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

  1. 1.6 3 km ENE of East Cathlamet, Washington
  2. 2.0 5 km NW of North Portland, Oregon
  3. 2.1 1 km ESE of Banks, Oregon
  4. 1.6 5 km ENE of Prescott, Oregon
  5. 1.6 6 km WSW of Castle Rock, Washington
  6. 1.6 10 km NE of Castle Rock, Washington
  7. 1.6 10 km NE of Castle Rock, Washington
  8. 2.2 0 km SE of Barberton, Washington
  9. 1.5 24 km N of Amboy, Washington
  10. 2.0 30 km N of Amboy, Washington
  11. 1.6 1 km WSW of Kalama, Washington
  12. 1.7 24 km N of Amboy, Washington
  13. 2.1 24 km N of Amboy, Washington
  14. 1.7 4 km NNE of Kalama, Washington
  15. 1.8 5 km WNW 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.