QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

6 km NNW of Philomath, Oregon

· -0.2 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Benton County 11 kmPolk County 34 kmLincoln County 41 kmLinn County 69 kmYamhill County 73 kmMarion County 73 kmLane County 84 kmTillamook County 100 kmWashington 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 1.6 (ml)
Depth
-0.2 km below the surface
Felt
no reports yet
Nearest
Benton County, 11 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 552 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 44.5947, -123.3957. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Benton County, OR 11 km (7 mi) NNE of here earthquakes near Benton County
Polk County, OR 34 km (21 mi) S of here earthquakes near Polk County
Lincoln County, OR 41 km (26 mi) E of here earthquakes near Lincoln County
Linn County, OR 69 km (43 mi) W of here earthquakes near Linn County
Yamhill County, OR 73 km (45 mi) S of here earthquakes near Yamhill County
Marion County, OR 73 km (45 mi) WSW of here earthquakes near Marion County

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

Aftershocks so far

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

  1. 1.5 6 km SSE of Monroe, Oregon
  2. 1.8 2 km ENE of Blodgett, Oregon
  3. 1.9 3 km S of Fort Hill, Oregon
  4. 1.8 5 km SSE of Monroe, Oregon
  5. 1.6 4 km NE of Falls City, Oregon
  6. 1.9 7 km SE of Toledo, Oregon
  7. 1.8 8 km W of Falls City, Oregon
  8. 1.6 6 km NNW of Philomath, Oregon
  9. 1.6 5 km W of Dallas, Oregon
  10. 1.7 9 km WSW of Falls City, Oregon
  11. 2.2 9 km E of Lincoln Beach, Oregon
  12. 1.7 10 km S of Alsea, Oregon
  13. 1.6 3 km S of Fort Hill, Oregon
  14. 1.6 4 km NW of Brownsville, Oregon
  15. 1.8 6 km NNW of Philomath, 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.