QuakeIndex

explosion · reviewed by a seismologist

M 1.8ml

29 km NNW of Huntington, Oregon

· -1.1 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Baker County 24 kmWashington County 54 kmPayette County 85 kmAdams County 85 kmUnion County 92 kmGem County 102 kmWallowa County 115 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
-1.1 km below the surface
Felt
no reports yet
Nearest
Baker County, 24 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 772 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 44.5757, -117.4542. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Baker County, OR 24 km (15 mi) SE of here earthquakes near Baker County
Washington County, ID 54 km (34 mi) WNW of here earthquakes near Washington County
Payette County, ID 85 km (53 mi) NW of here earthquakes near Payette County
Adams County, ID 85 km (53 mi) WSW of here earthquakes near Adams County
Union County, OR 92 km (57 mi) SSE of here earthquakes near Union County
Gem County, ID 102 km (63 mi) NW of here earthquakes near Gem County

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

Aftershocks so far

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

  1. 1.8 25 km NW of Huntington, Oregon
  2. 2.0 14 km NNE of Brogan, Oregon
  3. 2.0 28 km NW of Huntington, Oregon
  4. 1.7 27 km NW of Huntington, Oregon
  5. 2.1 24 km NW of Huntington, Oregon
  6. 1.7 25 km NW of Huntington, Oregon
  7. 1.8 27 km NW of Huntington, Oregon
  8. 2.2 27 km NW of Huntington, Oregon
  9. 1.6 23 km NNW of Huntington, Oregon
  10. 1.7 24 km NNW of Huntington, Oregon
  11. 1.9 22 km NNW of Huntington, Oregon
  12. 1.7 23 km NNW of Huntington, Oregon
  13. 1.6 24 km NW of Huntington, Oregon
  14. 1.9 26 km SW of Richland, Oregon
  15. 1.9 26 km NW of Huntington, 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.