QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

4 km NNE of Prineville, Oregon

· -1.6 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Crook County 39 kmJefferson County 46 kmDeschutes County 58 kmWheeler County 76 kmWasco County 97 kmSherman County 119 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
-1.6 km below the surface
Felt
no reports yet
Nearest
Crook County, 39 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2874 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 10 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 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 92× the energy of this one
  4. This earthquake M 1.7 about 10 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 44.3358, -120.8022. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Crook County, OR 39 km (24 mi) WNW of here earthquakes near Crook County
Jefferson County, OR 46 km (28 mi) SE of here earthquakes near Jefferson County
Deschutes County, OR 58 km (36 mi) NE of here earthquakes near Deschutes County
Wheeler County, OR 76 km (47 mi) SW of here earthquakes near Wheeler County
Wasco County, OR 97 km (60 mi) SSE of here earthquakes near Wasco County
Sherman County, OR 119 km (74 mi) S of here earthquakes near Sherman County

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

Aftershocks so far

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

  1. 1.6 12 km ENE of Terrebonne, Oregon
  2. 1.9 12 km NNW of Prineville, Oregon
  3. 1.8 13 km WNW of Prineville, Oregon
  4. 1.9 9 km SW of Prineville, Oregon
  5. 1.9 10 km E of Terrebonne, Oregon
  6. 1.7 12 km ENE of Terrebonne, Oregon
  7. 2.1 5 km SSW of Prineville, Oregon
  8. 1.9 6 km SE of Bend, Oregon
  9. 1.8 8 km ESE of Terrebonne, Oregon
  10. 1.6 35 km SSE of Prineville, Oregon
  11. 2.0 11 km ENE of Terrebonne, Oregon
  12. 2.3 6 km SW of Prineville, Oregon
  13. 2.0 29 km SE of Pronghorn, Oregon
  14. 1.7 9 km ENE of Terrebonne, Oregon
  15. 1.9 7 km SE of Bend, 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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