QuakeIndex

explosion · reviewed by a seismologist

M 1.9ml

Washington-Oregon border region

· -0.8 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Klickitat County 25 kmSherman County 28 kmGilliam County 48 kmWasco County 62 kmHood River County 70 kmYakima County 90 kmMorrow County 94 kmSkamania County 101 kmJefferson County 116 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 1.9 (ml)
Depth
-0.8 km below the surface
Felt
no reports yet
Nearest
Klickitat County, 25 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1957 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 45.6452, -120.7735. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Klickitat County, WA 25 km (16 mi) S of here earthquakes near Klickitat County
Sherman County, OR 28 km (18 mi) NNW of here earthquakes near Sherman County
Gilliam County, OR 48 km (30 mi) NW of here earthquakes near Gilliam County
Wasco County, OR 62 km (38 mi) NNE of here earthquakes near Wasco County
Hood River County, OR 70 km (44 mi) ENE of here earthquakes near Hood River County
Yakima County, WA 90 km (56 mi) S of here earthquakes near Yakima County

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

Aftershocks so far

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

  1. 2.1 12 km SSE of Bickleton, Washington
  2. 1.9 7 km SW of Arlington, Oregon
  3. 1.7 3 km NE of Dallesport, Washington
  4. 1.8 4 km E of Dallesport, Washington
  5. 1.7 1 km SSE of Goldendale, Washington
  6. 1.9 1 km NNE of Dallesport, Washington
  7. 1.7 8 km SE of Wasco, Oregon
  8. 1.7 1 km ESE of Chenoweth, Oregon
  9. 2.0 3 km ESE of Goldendale, Washington
  10. 1.8 6 km SW of Arlington, Oregon
  11. 2.2 19 km S of Arlington, Oregon
  12. 1.6 4 km ENE of Dallesport, Washington
  13. 1.5 5 km ESE of Dufur, Oregon
  14. 1.9 11 km S of Bickleton, Washington
  15. 1.9 13 km E of Goldendale, 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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