QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

3 km NNE of Government Camp, Oregon

· 3.2 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hood River County 20 kmClackamas County 41 kmWasco County 48 kmMultnomah County 58 kmClark County 76 kmSkamania County 79 kmMarion County 82 kmSherman County 83 kmJefferson County 88 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
3.2 km below the surface
Felt
no reports yet
Nearest
Hood River County, 20 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2619 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 45.3353, -121.7317. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hood River County, OR 20 km (13 mi) SSW of here earthquakes near Hood River County
Clackamas County, OR 41 km (26 mi) ENE of here earthquakes near Clackamas County
Wasco County, OR 48 km (30 mi) WNW of here earthquakes near Wasco County
Multnomah County, OR 58 km (36 mi) ESE of here earthquakes near Multnomah County
Clark County, WA 76 km (47 mi) SE of here earthquakes near Clark County
Skamania County, WA 79 km (49 mi) SSE of here earthquakes near Skamania County

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

Aftershocks so far

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

  1. 1.7 2 km SSW of Odell, Oregon
  2. 1.5 4 km NNW of North Bonneville, Washington
  3. 2.4 8 km NW of Parkdale, Oregon
  4. 1.8 8 km NNE of Government Camp, Oregon
  5. 2.5 8 km NNE of Government Camp, Oregon
  6. 2.0 6 km NE of Government Camp, Oregon
  7. 1.9 5 km ENE of Government Camp, Oregon
  8. 1.6 5 km NE of Government Camp, Oregon
  9. 1.7 6 km NE of Government Camp, Oregon
  10. 1.7 4 km N of Mount Hood, Oregon
  11. 1.6 6 km NE of Government Camp, Oregon
  12. 1.7 5 km NE of Government Camp, Oregon
  13. 1.8 6 km NE of Government Camp, Oregon
  14. 1.9 5 km NE of Government Camp, Oregon
  15. 1.5 6 km NE of Government Camp, 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.