QuakeIndex

explosion · reviewed by a seismologist

M 2.8ml

5 km SW of Prineville, Oregon

· -1.6 km deep · released about 430 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Crook County 42 kmDeschutes County 47 kmJefferson County 49 kmWheeler County 86 kmWasco County 103 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 2.8 (ml)
Depth
-1.6 km below the surface
Felt
9 reports · strongest reported intensity III
Nearest
Crook County, 42 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 953 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 9 people have reported feeling it to USGS.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 430 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 35,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 25,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.2× the energy of this one
  4. This earthquake M 2.8 about 430 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 44.2617, -120.8853. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Crook County, OR 42 km (26 mi) WNW of here earthquakes near Crook County
Deschutes County, OR 47 km (29 mi) NE of here earthquakes near Deschutes County
Jefferson County, OR 49 km (30 mi) SSE of here earthquakes near Jefferson County
Wheeler County, OR 86 km (54 mi) SW of here earthquakes near Wheeler County
Wasco County, OR 103 km (64 mi) SSE of here earthquakes near Wasco County
Clackamas County, OR 144 km (89 mi) SE of here earthquakes near Clackamas County

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

Aftershocks so far

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

  1. 1.9 3 km WSW of Tumalo, Oregon
  2. 2.1 4 km NNW of Bend, Oregon
  3. 2.0 6 km SW of Tumalo, Oregon
  4. 2.5 5 km SW of Prineville, Oregon
  5. 1.7 3 km SW of Tumalo, Oregon
  6. 2.1 2 km ESE of Tumalo, Oregon
  7. 1.6 2 km SW of Tumalo, Oregon
  8. 2.1 11 km ENE of Terrebonne, Oregon
  9. 2.2 5 km NW of Bend, Oregon
  10. 1.5 8 km E of Culver, Oregon
  11. 2.2 5 km SW of Prineville, Oregon
  12. 2.5 29 km ESE of Bend, Oregon
  13. 1.8 2 km WSW of Tumalo, Oregon
  14. 1.8 3 km NW of Metolius, Oregon
  15. 1.8 28 km SE of Prineville, 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.