QuakeIndex

explosion · reviewed by a seismologist

M 1.6md

7 km NW of Philomath, Oregon

· -0.4 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 35 kmLincoln County 39 kmLinn County 71 kmYamhill County 74 kmMarion County 75 kmLane County 85 kmTillamook County 100 kmWashington County 110 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 (md)
Depth
-0.4 km below the surface
Felt
no reports yet
Nearest
Benton County, 11 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2183 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 44.5898, -123.4227. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Benton County, OR 11 km (7 mi) N of here earthquakes near Benton County
Polk County, OR 35 km (21 mi) S of here earthquakes near Polk County
Lincoln County, OR 39 km (24 mi) E of here earthquakes near Lincoln County
Linn County, OR 71 km (44 mi) W of here earthquakes near Linn County
Yamhill County, OR 74 km (46 mi) S of here earthquakes near Yamhill County
Marion County, OR 75 km (47 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

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

  1. 1.6 5 km W of Dallas, Oregon
  2. 1.7 9 km WSW of Falls City, Oregon
  3. 2.2 9 km E of Lincoln Beach, Oregon
  4. 1.7 10 km S of Alsea, Oregon
  5. 1.6 3 km S of Fort Hill, Oregon
  6. 1.6 4 km NW of Brownsville, Oregon
  7. 1.8 6 km NNW of Philomath, Oregon
  8. 1.5 3 km S of Brownsville, Oregon
  9. 1.7 11 km ESE of Rose Lodge, Oregon
  10. 2.1 2 km WSW of Jefferson, Oregon
  11. 1.6 5 km W of Dallas, Oregon
  12. 1.6 7 km NNW of Philomath, Oregon
  13. 1.9 16 km SSE of Toledo, Oregon
  14. 1.7 1 km W of Siletz, Oregon
  15. 1.9 6 km SSW 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.