QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

6 km WNW of Gervais, Oregon

· 41 km deep · released about 530 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yamhill County 30 kmMarion County 41 kmPolk County 43 kmWashington County 47 kmClackamas County 61 kmMultnomah County 63 kmTillamook County 71 kmLinn County 80 kmBenton County 80 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 2.8 (ml)
Depth
41 km below the surface
Felt
20 reports · strongest reported intensity IV
Nearest
Yamhill County, 30 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2861 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 20 people have reported feeling it to USGS.

How big was it?

This earthquake released about 530 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 29,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 20,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.8× the energy of this one
  4. This earthquake M 2.8 about 530 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 45.1358, -122.9722. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yamhill County, OR 30 km (18 mi) ESE of here earthquakes near Yamhill County
Marion County, OR 41 km (25 mi) NW of here earthquakes near Marion County
Polk County, OR 43 km (26 mi) NE of here earthquakes near Polk County
Washington County, OR 47 km (29 mi) SSE of here earthquakes near Washington County
Clackamas County, OR 61 km (38 mi) W of here earthquakes near Clackamas County
Multnomah County, OR 63 km (39 mi) SW of here earthquakes near Multnomah 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. 1.8 8 km SE of Molalla, Oregon
  2. 1.9 8 km SE of Scotts Mills, Oregon
  3. 1.5 0 km N of Tigard, Oregon
  4. 1.7 4 km SSW of Scotts Mills, Oregon
  5. 1.5 6 km SSE of Molalla, Oregon
  6. 1.8 10 km N of Mill City, Oregon
  7. 1.7 3 km SW of Scotts Mills, Oregon
  8. 2.0 7 km ESE of Molalla, Oregon
  9. 1.8 2 km SW of Tualatin, Oregon
  10. 1.8 1 km ESE of Butteville, Oregon
  11. 2.0 Washington-Oregon border region
  12. 1.9 3 km E of Sherwood, Oregon
  13. 1.8 0 km E of Sherwood, Oregon
  14. 1.7 3 km SW of Tualatin, Oregon
  15. 1.8 5 km E of Silverton, 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.