QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

16 km SSE of Cascadia, Oregon

· -0.9 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Linn County 28 kmLane County 51 kmMarion County 73 kmBenton County 83 kmClackamas County 103 kmDeschutes County 104 kmPolk County 105 kmJefferson County 109 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
-0.9 km below the surface
Felt
no reports yet
Nearest
Linn County, 28 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1151 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

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 44.2510, -122.4368. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Linn County, OR 28 km (17 mi) SSE of here earthquakes near Linn County
Lane County, OR 51 km (32 mi) NE of here earthquakes near Lane County
Marion County, OR 73 km (45 mi) S of here earthquakes near Marion County
Benton County, OR 83 km (52 mi) ESE of here earthquakes near Benton County
Clackamas County, OR 103 km (64 mi) S of here earthquakes near Clackamas County
Deschutes County, OR 104 km (64 mi) WNW of here earthquakes near Deschutes County

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

Aftershocks so far

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

  1. 0.4 24 km ENE of Unity, Oregon
  2. 1.8 5 km NW of Lacomb, Oregon
  3. 1.6 5 km NW of Lacomb, Oregon
  4. 1.7 14 km NE of Springfield, Oregon
  5. 2.0 6 km W of Lacomb, Oregon
  6. 1.6 9 km SSE of Crawfordsville, Oregon
  7. 1.5 4 km SSE of Cascadia, Oregon
  8. 1.5 1 km NNE of Cascadia, Oregon
  9. 2.0 4 km N of Sweet Home, Oregon
  10. 1.8 5 km N of Waterloo, Oregon
  11. 1.5 3 km S of Brownsville, Oregon
  12. 1.6 22 km N of Unity, Oregon
  13. 1.9 5 km ENE of Lebanon, Oregon
  14. 2.2 3 km NNW of Sweet Home, Oregon
  15. 1.6 2 km SSE of Sodaville, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2022-10-07 — it released about 9,400 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.