QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

6 km NNW of Fort Hill Census Designated Place, Oregon

· 48 km deep · released about 3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yamhill County 25 kmPolk County 27 kmTillamook County 41 kmLincoln County 59 kmWashington County 62 kmBenton County 70 kmMarion County 82 kmColumbia County 100 kmClatsop County 102 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 3.5 (ml)
Depth
48 km below the surface
Felt
53 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
Nearest
Yamhill County, 25 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2053 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 53 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 57,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,800× the energy of this one
  4. This earthquake M 3.5 about 3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 6.2× 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 45.1128, -123.5753. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yamhill County, OR 25 km (16 mi) SW of here earthquakes near Yamhill County
Polk County, OR 27 km (17 mi) NNW of here earthquakes near Polk County
Tillamook County, OR 41 km (25 mi) SSE of here earthquakes near Tillamook County
Lincoln County, OR 59 km (37 mi) NNE of here earthquakes near Lincoln County
Washington County, OR 62 km (38 mi) SW of here earthquakes near Washington County
Benton County, OR 70 km (43 mi) N of here earthquakes near Benton County

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

Aftershocks so far

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

  1. 1.8 9 km ESE of Rose Lodge, Oregon
  2. 1.6 4 km NE of Lafayette, Oregon
  3. 1.6 3 km SE of Beaver, Oregon
  4. 1.7 6 km NNE of Falls City, Oregon
  5. 1.5 5 km ENE of Sheridan, Oregon
  6. 1.6 7 km NE of Amity, Oregon
  7. 1.7 4 km S of Fort Hill, Oregon
  8. 1.5 6 km W of Dallas, Oregon
  9. 1.7 4 km NE of Lafayette, Oregon
  10. 1.9 5 km NE of Lincoln Beach, Oregon
  11. 1.7 9 km SE of Amity, Oregon
  12. 1.8 9 km NW of Keizer, Oregon
  13. 1.5 5 km NE of Amity, Oregon
  14. 1.5 8 km W of Yamhill, Oregon
  15. 1.7 17 km W of Falls City, 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.