QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

27 km ESE of Lakeside, Oregon

· -0.4 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Coos County 36 kmDouglas County 61 kmLane County 94 kmCurry County 114 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
-0.4 km below the surface
Felt
no reports yet
Nearest
Coos County, 36 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 507 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 9.3 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 43.4628, -123.8698. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coos County, OR 36 km (22 mi) NNE of here earthquakes near Coos County
Douglas County, OR 61 km (38 mi) WNW of here earthquakes near Douglas County
Lane County, OR 94 km (58 mi) WSW of here earthquakes near Lane County
Curry County, OR 114 km (71 mi) NNE of here earthquakes near Curry County
Benton County, OR 120 km (75 mi) SSW of here earthquakes near Benton County
Josephine County, OR 122 km (76 mi) NNW of here earthquakes near Josephine County

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

Aftershocks so far

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

  1. 1.6 12 km ENE of Glasgow, Oregon
  2. 1.6 5 km NW of Roseburg North, Oregon
  3. 1.5 9 km WSW of Lookingglass, Oregon
  4. 1.8 28 km E of Glasgow, Oregon
  5. 1.5 5 km ESE of Coquille, Oregon
  6. 1.8 5 km NNW of Roseburg North, Oregon
  7. 1.5 8 km SW of Lookingglass, Oregon
  8. 1.5 11 km E of Glasgow, Oregon
  9. 1.7 6 km NW of Roseburg North, Oregon
  10. 1.5 8 km SW of Lookingglass, Oregon
  11. 1.7 2 km SW of Drain, Oregon
  12. 1.6 21 km ESE of Reedsport, Oregon
  13. 1.7 30 km E of Bunker Hill, 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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