QuakeIndex

explosion · reviewed by a seismologist

M 1.8ml

5 km NNW of Roseburg North, Oregon

· -0.6 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Douglas County 14 kmCoos County 63 kmLane County 77 kmJosephine County 104 kmJackson County 113 kmCurry 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 1.8 (ml)
Depth
-0.6 km below the surface
Felt
no reports yet
Nearest
Douglas County, 14 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 229 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 43.3063, -123.3307. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Douglas County, OR 14 km (9 mi) W of here earthquakes near Douglas County
Coos County, OR 63 km (39 mi) ENE of here earthquakes near Coos County
Lane County, OR 77 km (48 mi) SSW of here earthquakes near Lane County
Josephine County, OR 104 km (65 mi) N of here earthquakes near Josephine County
Jackson County, OR 113 km (70 mi) NNW of here earthquakes near Jackson County
Curry County, OR 118 km (73 mi) NE of here earthquakes near Curry County

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

Aftershocks so far

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

  1. 1.1 4 km NNE of Roseburg North, Oregon
  2. 1.6 6 km W of Riddle, Oregon
  3. 1.6 9 km SSW of Cottage Grove, Oregon
  4. 1.6 5 km NW of Roseburg North, Oregon
  5. 1.5 9 km WSW of Lookingglass, Oregon
  6. 1.8 28 km E of Glasgow, Oregon
  7. 1.6 5 km SE of Dillard, 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.