QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

3 km SE of Mill Plain, Washington

· 6.8 km deep · released about 280 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Multnomah County 9 kmClark County 17 kmWashington County 51 kmClackamas County 55 kmSkamania County 59 kmColumbia County 60 kmHood River County 63 kmCowlitz County 66 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 2.6 (ml)
Depth
6.8 km below the surface
Felt
1039 reports · strongest reported intensity IV
Nearest
Multnomah County, 9 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1452 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1039 people have reported feeling it to USGS.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 53,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 38,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.3× the energy of this one
  4. This earthquake M 2.6 about 280 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 45.6220, -122.4558. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Multnomah County, OR 9 km (5 mi) NNW of here earthquakes near Multnomah County
Clark County, WA 17 km (10 mi) S of here earthquakes near Clark County
Washington County, OR 51 km (31 mi) E of here earthquakes near Washington County
Clackamas County, OR 55 km (34 mi) NNW of here earthquakes near Clackamas County
Skamania County, WA 59 km (37 mi) SW of here earthquakes near Skamania County
Columbia County, OR 60 km (37 mi) SE of here earthquakes near Columbia 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. 1.9 3 km NNE of Deer Island, Oregon
  2. 1.9 1 km ESE of La Center, Washington
  3. 3.1 4 km WSW of Deer Island, Oregon
  4. 1.7 2 km WNW of Yacolt, Washington
  5. 1.8 2 km ENE of Brush Prairie, Washington
  6. 1.8 6 km NE of Woodland, Washington
  7. 1.7 3 km W of Columbia City, Oregon
  8. 1.7 3 km SE of Sherwood, Oregon
  9. 1.7 Washington-Oregon border region
  10. 2.2 3 km NW of Mount Hood Village, Oregon
  11. 2.0 3 km WSW of Yacolt, Washington
  12. 1.8 3 km ESE of Sherwood, Oregon
  13. 1.8 2 km NW of King City, Oregon
  14. 1.5 3 km W of Yacolt, Washington
  15. 2.3 2 km SW of Lake Shore, 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.