QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

6 km SSE of Trout Lake, Washington

· -0.9 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 37 kmHood River County 50 kmKlickitat County 56 kmClark County 79 kmYakima County 81 kmMultnomah County 84 kmSherman County 88 kmWasco County 91 kmCowlitz County 96 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 1.7 (ml)
Depth
-0.9 km below the surface
Felt
no reports yet
Nearest
Skamania County, 37 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 705 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 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 45.9457, -121.4928. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 37 km (23 mi) ESE of here earthquakes near Skamania County
Hood River County, OR 50 km (31 mi) NNE of here earthquakes near Hood River County
Klickitat County, WA 56 km (35 mi) W of here earthquakes near Klickitat County
Clark County, WA 79 km (49 mi) ENE of here earthquakes near Clark County
Yakima County, WA 81 km (50 mi) SW of here earthquakes near Yakima County
Multnomah County, OR 84 km (52 mi) ENE of here earthquakes near Multnomah County

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

Aftershocks so far

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

  1. 2.6 23 km N of Trout Lake, Washington
  2. 1.6 6 km SE of Odell, Oregon
  3. 1.7 3 km NE of Dallesport, Washington
  4. 1.9 5 km NW of White Salmon, Washington
  5. 1.6 10 km NNW of Carson, Washington
  6. 2.2 23 km NNW of Carson, Washington
  7. 1.5 23 km N of Trout Lake, Washington
  8. 1.8 4 km E of Dallesport, Washington
  9. 1.7 6 km SE of Mosier, Oregon
  10. 1.9 1 km NNE of Dallesport, Washington
  11. 1.7 23 km N of Trout Lake, Washington
  12. 1.6 5 km S of Odell, Oregon
  13. 2.1 21 km NNW of Carson, Washington
  14. 1.6 5 km N of Mosier, Oregon
  15. 1.6 21 km N of Trout Lake, Washington

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.