QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

3 km NW of Venersborg, Washington

· -0.6 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 3 kmMultnomah County 28 kmSkamania County 47 kmCowlitz County 48 kmColumbia County 51 kmWashington County 56 kmHood River County 70 kmClackamas County 74 kmLewis 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 1.7 (ml)
Depth
-0.6 km below the surface
Felt
no reports yet
Nearest
Clark County, 3 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 97 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 45.7952, -122.4623. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, WA 3 km (2 mi) NE of here earthquakes near Clark County
Multnomah County, OR 28 km (17 mi) N of here earthquakes near Multnomah County
Skamania County, WA 47 km (29 mi) WSW of here earthquakes near Skamania County
Cowlitz County, WA 48 km (30 mi) SSE of here earthquakes near Cowlitz County
Columbia County, OR 51 km (31 mi) ESE of here earthquakes near Columbia County
Washington County, OR 56 km (35 mi) ENE of here earthquakes near Washington County

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

Aftershocks so far

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

  1. 0.2 37 km NNE of Amboy, Washington
  2. 1.5 5 km NNW of Venersborg, Washington
  3. 1.7 18 km N of Amboy, Washington
  4. 0.3 32 km NE of Amboy, Washington
  5. 1.3 38 km NNE of Amboy, Washington
  6. 1.0 32 km NNE of Amboy, Washington
  7. 1.5 37 km NNE of Amboy, Washington
  8. 1.5 31 km E of Kelso, Washington
  9. 2.2 27 km ENE of Yacolt, Washington
  10. 2.0 10 km SSE of Scappoose, Oregon
  11. 1.6 5 km WSW of Yacolt, Washington
  12. 1.6 32 km N of Amboy, Washington
  13. 1.8 4 km WSW of Yacolt, Washington
  14. 1.8 27 km N of Amboy, Washington
  15. 2.1 4 km W of Yacolt, 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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