QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

16 km WSW of Lostine, Oregon

· 14 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Union County 33 kmWallowa County 39 kmBaker County 79 kmUmatilla County 89 kmAsotin County 90 kmColumbia County 100 kmAdams County 108 kmGarfield County 113 kmWalla Walla 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
14 km below the surface
Felt
no reports yet
Nearest
Union County, 33 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 567 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

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 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× 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 45.4162, -117.6142. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Union County, OR 33 km (20 mi) ENE of here earthquakes near Union County
Wallowa County, OR 39 km (24 mi) WSW of here earthquakes near Wallowa County
Baker County, OR 79 km (49 mi) N of here earthquakes near Baker County
Umatilla County, OR 89 km (56 mi) ESE of here earthquakes near Umatilla County
Asotin County, WA 90 km (56 mi) SSW of here earthquakes near Asotin County
Columbia County, WA 100 km (62 mi) SSE of here earthquakes near Columbia County

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

Aftershocks so far

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

  1. 1.5 3 km SSE of Wallowa, Oregon
  2. 2.0 2 km NNW of North Powder, Oregon
  3. 1.5 22 km NNE of Elgin, Oregon
  4. 1.6 13 km SW of Lostine, Oregon
  5. 1.6 6 km WSW of La Grande, Oregon
  6. 1.8 10 km SE of La Grande, Oregon
  7. 1.6 21 km ESE of Cove, Oregon
  8. 2.7 6 km NNW of Summerville, Oregon
  9. 2.0 15 km WSW of Lostine, Oregon
  10. 1.6 14 km NE of Cove, Oregon
  11. 2.1 17 km WSW of Lostine, Oregon
  12. 2.0 15 km WSW of Lostine, Oregon
  13. 1.5 17 km WSW of Lostine, 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.