QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

15 km NNW of Shaniko, Oregon

· 11 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Wasco County 28 kmSherman County 31 kmGilliam County 50 kmJefferson County 62 kmWheeler County 76 kmHood River County 78 kmKlickitat County 82 kmMorrow County 100 kmClackamas County 109 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
11 km below the surface
Felt
no reports yet
Nearest
Wasco County, 28 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2127 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 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 45.1328, -120.8098. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Wasco County, OR 28 km (17 mi) E of here earthquakes near Wasco County
Sherman County, OR 31 km (19 mi) SSW of here earthquakes near Sherman County
Gilliam County, OR 50 km (31 mi) WSW of here earthquakes near Gilliam County
Jefferson County, OR 62 km (38 mi) NNE of here earthquakes near Jefferson County
Wheeler County, OR 76 km (47 mi) NW of here earthquakes near Wheeler County
Hood River County, OR 78 km (49 mi) ESE of here earthquakes near Hood River County

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

Aftershocks so far

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

  1. 1.7 8 km SE of Wasco, Oregon
  2. 1.9 4 km SE of Pine Grove, Oregon
  3. 1.5 5 km ESE of Dufur, Oregon
  4. 1.6 1 km E of Moro, Oregon
  5. 1.6 17 km SSW of Grass Valley, Oregon
  6. 1.5 11 km SSE of Pine Grove, Oregon
  7. 1.7 5 km ESE of Pine Grove, Oregon
  8. 1.6 11 km SSE of Maupin, 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.