QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

7 km N of Rickreall, Oregon

· -0.1 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Polk County 16 kmYamhill County 29 kmMarion County 53 kmBenton County 58 kmWashington County 63 kmTillamook County 65 kmLincoln County 66 kmLinn County 79 kmClackamas County 84 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 1.7 (ml)
Depth
-0.1 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Polk County, 16 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2922 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 44.9965, -123.2405. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Polk County, OR 16 km (10 mi) NE of here earthquakes near Polk County
Yamhill County, OR 29 km (18 mi) SSE of here earthquakes near Yamhill County
Marion County, OR 53 km (33 mi) WNW of here earthquakes near Marion County
Benton County, OR 58 km (36 mi) NNE of here earthquakes near Benton County
Washington County, OR 63 km (39 mi) S of here earthquakes near Washington County
Tillamook County, OR 65 km (41 mi) SE of here earthquakes near Tillamook County

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

Aftershocks so far

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

  1. 1.7 5 km SSW of Saint Paul, Oregon
  2. 1.6 5 km E of Hubbard, Oregon
  3. 1.6 12 km ESE of Hebo, Oregon
  4. 1.6 3 km S of Fort Hill Census Designated Place, Oregon
  5. 1.8 3 km W of Saint Paul, Oregon
  6. 1.9 Oregon
  7. 1.7 8 km SE of Amity, Oregon
  8. 2.0 4 km WNW of Dundee, Oregon
  9. 1.6 11 km NNW of Sheridan, Oregon
  10. 2.2 1 km SW of Carlton, Oregon
  11. 1.7 3 km SSW of Scotts Mills, Oregon
  12. 2.0 6 km NE of Amity, Oregon
  13. 1.6 4 km WNW of Adair Village, Oregon
  14. 1.9 5 km W of Dallas, Oregon
  15. 1.9 5 km ESE 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.