QuakeIndex

explosion · reviewed by a seismologist

M 1.5ml

5 km NNW of White Salmon, Washington

· -1.1 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hood River County 31 kmSkamania County 43 kmKlickitat County 58 kmWasco County 73 kmMultnomah County 74 kmClark County 75 kmSherman County 78 kmClackamas County 86 kmYakima County 97 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 1.5 (ml)
Depth
-1.1 km below the surface
Felt
no reports yet
Nearest
Hood River County, 31 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 740 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 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 45.7750, -121.5215. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hood River County, OR 31 km (19 mi) NNE of here earthquakes near Hood River County
Skamania County, WA 43 km (27 mi) SE of here earthquakes near Skamania County
Klickitat County, WA 58 km (36 mi) W of here earthquakes near Klickitat County
Wasco County, OR 73 km (46 mi) NNW of here earthquakes near Wasco County
Multnomah County, OR 74 km (46 mi) ENE of here earthquakes near Multnomah County
Clark County, WA 75 km (46 mi) E of here earthquakes near Clark County

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

Aftershocks so far

20 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. 1.8 31 km ENE of Yacolt, Washington
  8. 1.5 23 km N of Trout Lake, Washington
  9. 1.8 4 km E of Dallesport, Washington
  10. 1.7 6 km SE of Mosier, Oregon
  11. 1.9 8 km NNE of Government Camp, Oregon
  12. 1.9 1 km NNE of Dallesport, Washington
  13. 1.7 23 km N of Trout Lake, Washington
  14. 1.6 5 km S of Odell, Oregon
  15. 2.1 21 km NNW of Carson, 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

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