QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

3 km WSW of Adams, Oregon

· 7.0 km deep · released about 570 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Umatilla County 21 kmWalla Walla County 56 kmUnion County 68 kmColumbia County 80 kmMorrow County 86 kmBenton County 89 kmFranklin County 90 kmWallowa County 111 kmGarfield County 111 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 2.9 (ml)
Depth
7.0 km below the surface
Felt
1 report · strongest reported intensity II
Measured shaking
intensity II (ShakeMap)
Nearest
Umatilla County, 21 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3425 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 570 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 27,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.9 about 570 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 45.7528, -118.5953. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Umatilla County, OR 21 km (13 mi) NNE of here earthquakes near Umatilla County
Walla Walla County, WA 56 km (35 mi) S of here earthquakes near Walla Walla County
Union County, OR 68 km (42 mi) NW of here earthquakes near Union County
Columbia County, WA 80 km (50 mi) SW of here earthquakes near Columbia County
Morrow County, OR 86 km (54 mi) ENE of here earthquakes near Morrow County
Benton County, WA 89 km (55 mi) SE of here earthquakes near Benton County

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

Aftershocks so far

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

  1. 1.7 8 km N of Helix, Oregon
  2. 1.9 9 km WNW of Touchet, Washington
  3. 1.8 4 km NNW of Pendleton, Oregon
  4. 1.6 11 km E of Milton-Freewater, Oregon
  5. 1.7 11 km E of Milton-Freewater, Oregon
  6. 2.0 4 km ESE of Milton-Freewater, Oregon
  7. 1.7 4 km N of Touchet, Washington
  8. 1.6 19 km SE of Walla Walla East, Washington
  9. 1.7 6 km E of Wallula, Washington
  10. 1.7 9 km ESE of Echo, Oregon
  11. 2.1 2 km ENE of Milton-Freewater, Oregon
  12. 1.9 3 km WNW of Pendleton, Oregon
  13. 1.8 5 km SSE of Milton-Freewater, Oregon
  14. 1.6 11 km W of Pendleton, Oregon
  15. 2.1 2 km SE of Milton-Freewater, 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.