QuakeIndex

explosion · reviewed by a seismologist

M 2.1md

5 km ENE of Medford, Oregon

· -1.0 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jackson County 14 kmJosephine County 62 kmSiskiyou County 87 kmKlamath County 103 kmDouglas County 108 kmCurry County 115 kmDel Norte County 117 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 2.1 (md)
Depth
-1.0 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Jackson County, 14 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 42.3450, -122.8180. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jackson County, OR 14 km (9 mi) WSW of here earthquakes near Jackson County
Josephine County, OR 62 km (39 mi) E of here earthquakes near Josephine County
Siskiyou County, CA 87 km (54 mi) NNW of here earthquakes near Siskiyou County
Klamath County, OR 103 km (64 mi) WSW of here earthquakes near Klamath County
Douglas County, OR 108 km (67 mi) SSE of here earthquakes near Douglas County
Curry County, OR 115 km (72 mi) E of here earthquakes near Curry County

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

Aftershocks so far

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

  1. 1.8 6 km ENE of Medford, Oregon
  2. 1.8 4 km SE of Eagle Point, Oregon
  3. 1.9 8 km SSE of Jacksonville, Oregon
  4. 1.6 9 km SSE of Jacksonville, Oregon
  5. 1.7 7 km WNW of Butte Falls, Oregon
  6. 1.5 2 km WSW of Rogue River, Oregon
  7. 1.8 7 km WNW of Butte Falls, Oregon
  8. 2.0 6 km SSE of White City, Oregon
  9. 1.8 7 km SSE of White City, Oregon
  10. 2.0 7 km S of Shady Cove, Oregon
  11. 1.9 5 km SE of Eagle Point, Oregon
  12. 1.5 22 km E of Ashland, Oregon
  13. 1.5 6 km W of Central Point, Oregon
  14. 1.9 17 km SW of Ashland, Oregon
  15. 1.8 6 km NNW of Eagle Point, 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.