QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

2 km NW of Carson, Washington

· -0.8 km deep · released about 8.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hood River County 30 kmSkamania County 32 kmMultnomah County 50 kmClark County 50 kmClackamas County 71 kmCowlitz County 82 kmKlickitat County 83 kmWasco County 83 kmSherman County 98 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 1.6 (ml)
Depth
-0.8 km below the surface
Felt
no reports yet
Nearest
Hood River County, 30 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1586 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 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 45.7462, -121.8408. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hood River County, OR 30 km (18 mi) NNW of here earthquakes near Hood River County
Skamania County, WA 32 km (20 mi) SSE of here earthquakes near Skamania County
Multnomah County, OR 50 km (31 mi) ENE of here earthquakes near Multnomah County
Clark County, WA 50 km (31 mi) E of here earthquakes near Clark County
Clackamas County, OR 71 km (44 mi) NNE of here earthquakes near Clackamas County
Cowlitz County, WA 82 km (51 mi) SE of here earthquakes near Cowlitz County

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

Aftershocks so far

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

  1. 1.7 5 km SSE of Yacolt, Washington
  2. 1.9 5 km NW of White Salmon, Washington
  3. 1.6 10 km NNW of Carson, Washington
  4. 2.2 23 km NNW of Carson, Washington
  5. 1.8 31 km ENE of Yacolt, Washington
  6. 1.7 6 km SE of Mosier, Oregon
  7. 1.9 8 km NNE of Government Camp, Oregon
  8. 1.6 5 km S of Odell, Oregon
  9. 2.1 21 km NNW of Carson, Washington
  10. 1.9 8 km NNE of Government Camp, Oregon
  11. 1.6 5 km N of Mosier, Oregon
  12. 1.6 3 km NNE of Washougal, Washington
  13. 1.5 14 km NE of Amboy, Washington
  14. 1.6 5 km ENE of Government Camp, Oregon
  15. 1.6 7 km ENE 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.