QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

17 km SE of Molalla, Oregon

· 11 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clackamas County 21 kmMarion County 21 kmMultnomah County 56 kmLinn County 63 kmYamhill County 75 kmHood River County 78 kmWashington County 79 kmPolk County 80 kmClark County 81 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
11 km below the surface
Felt
no reports yet
Nearest
Clackamas County, 21 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 983 days ago

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

How big was it?

This earthquake released about 10 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 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× the energy of this one
  4. This earthquake M 1.7 about 10 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 45.0448, -122.4008. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clackamas County, OR 21 km (13 mi) SW of here earthquakes near Clackamas County
Marion County, OR 21 km (13 mi) NE of here earthquakes near Marion County
Multnomah County, OR 56 km (35 mi) S of here earthquakes near Multnomah County
Linn County, OR 63 km (39 mi) N of here earthquakes near Linn County
Yamhill County, OR 75 km (47 mi) ESE of here earthquakes near Yamhill County
Hood River County, OR 78 km (49 mi) SW of here earthquakes near Hood River County

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

Aftershocks so far

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

  1. 1.6 2 km WSW of Stafford, Oregon
  2. 1.8 4 km SSE of Stafford, Oregon
  3. 1.7 8 km S of Molalla, Oregon
  4. 1.8 7 km SSE of Molalla, Oregon
  5. 1.6 6 km ESE of Molalla, Oregon
  6. 1.6 4 km SSW of Scotts Mills, Oregon
  7. 1.8 6 km ESE of Molalla, Oregon
  8. 1.8 3 km W of Mehama, Oregon
  9. 1.5 5 km E of Beavercreek, Oregon
  10. 2.1 7 km ESE of Molalla, Oregon
  11. 1.5 4 km SSW of Scotts Mills, Oregon
  12. 1.5 1 km SSE of Hubbard, Oregon
  13. 1.8 8 km ESE of Scotts Mills, Oregon
  14. 1.6 6 km SSE of Molalla, Oregon
  15. 1.7 5 km W of Mehama, 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.