QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

26 km W of Dunes City, OR

58 km (36 mi) WSW of Eugene, OR

· -0.3 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lane County 72 kmBenton County 75 kmCoos County 81 kmDouglas County 84 kmLincoln County 85 kmPolk County 118 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
-0.3 km below the surface
Felt
no reports yet
Nearest
Lane County, 72 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3041 days ago

A magnitude 1.6 earthquake was recorded 26 km W of Dunes City, OR at 17:04 UTC on 2018-06-05. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Dunes City, Florence.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 43.8773, -123.7965. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lane County, OR 72 km (45 mi) E earthquakes near Lane County
Benton County, OR 75 km (46 mi) NNE earthquakes near Benton County
Coos County, OR 81 km (50 mi) SSW earthquakes near Coos County
Douglas County, OR 84 km (52 mi) SE earthquakes near Douglas County
Lincoln County, OR 85 km (53 mi) N earthquakes near Lincoln County
Polk County, OR 118 km (73 mi) NNE earthquakes near Polk County

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

Aftershocks so far

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

  1. 1.8 28 km E of Glasgow, Oregon
  2. 1.6 29 km NE of Florence, Oregon
  3. 1.7 10 km S of Alsea, Oregon
  4. 1.7 2 km SW of Drain, Oregon
  5. 1.6 21 km ESE of Reedsport, Oregon
  6. 1.7 27 km ESE of Lakeside, Oregon
  7. 1.7 1 km S of Drain, Oregon
  8. 2.0 3 km SW of Drain, Oregon
  9. 1.7 28 km ESE of Florence, Oregon
  10. 1.9 22 km ESE of Reedsport, Oregon
  11. 1.6 2 km SW of Drain, Oregon
  12. 1.9 2 km SW of Drain, Oregon
  13. 1.7 21 km ESE of Reedsport, Oregon
  14. 1.7 22 km W of Elkton, Oregon
  15. 1.9 30 km ESE of Florence, 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

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