QuakeIndex

explosion · reviewed by a seismologist

M 1.9ml

22 km ESE of Reedsport, Oregon

· -0.4 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Coos County 53 kmDouglas County 67 kmLane County 83 kmBenton County 103 kmLincoln County 113 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 1.9 (ml)
Depth
-0.4 km below the surface
Felt
no reports yet
Nearest
Coos County, 53 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 718 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 18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 43.6223, -123.8458. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coos County, OR 53 km (33 mi) NNE of here earthquakes near Coos County
Douglas County, OR 67 km (42 mi) NW of here earthquakes near Douglas County
Lane County, OR 83 km (52 mi) WSW of here earthquakes near Lane County
Benton County, OR 103 km (64 mi) SSW of here earthquakes near Benton County
Lincoln County, OR 113 km (70 mi) S of here earthquakes near Lincoln County
Linn County, OR 142 km (88 mi) SW of here earthquakes near Linn County

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

Aftershocks so far

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

  1. 1.6 12 km ENE of Glasgow, Oregon
  2. 1.8 28 km E of Glasgow, Oregon
  3. 2.1 21 km NW of Winchester Bay, Oregon
  4. 1.5 11 km E of Glasgow, Oregon
  5. 1.7 2 km SW of Drain, Oregon
  6. 1.6 21 km ESE of Reedsport, Oregon
  7. 1.7 30 km E of Bunker Hill, Oregon
  8. 1.7 27 km ESE of Lakeside, Oregon
  9. 1.7 1 km S of Drain, Oregon
  10. 2.0 3 km SW of Drain, Oregon
  11. 1.6 13 km WNW of Sutherlin, Oregon
  12. 1.7 28 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.