QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

5 km SSE of Yacolt, Washington

· -0.5 km deep · released about 11 lb of TNT

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10 km30 km60 km120 km N Clark County 10 kmMultnomah County 31 kmSkamania County 39 kmCowlitz County 48 kmColumbia County 56 kmWashington County 64 kmHood River County 66 kmClackamas County 75 kmLewis County 84 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
-0.5 km below the surface
Felt
no reports yet
Nearest
Clark County, 10 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 158 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× 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 45.8243, -122.3743. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, WA 10 km (6 mi) NE of here earthquakes near Clark County
Multnomah County, OR 31 km (19 mi) N of here earthquakes near Multnomah County
Skamania County, WA 39 km (25 mi) SW of here earthquakes near Skamania County
Cowlitz County, WA 48 km (30 mi) SSE of here earthquakes near Cowlitz County
Columbia County, OR 56 km (35 mi) ESE of here earthquakes near Columbia County
Washington County, OR 64 km (40 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

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

  1. 0.2 37 km NNE of Amboy, Washington
  2. 0.5 38 km NNE of Amboy, Washington
  3. 1.5 5 km NNW of Venersborg, Washington
  4. 0.6 38 km NNE of Amboy, Washington
  5. 1.7 18 km N of Amboy, Washington
  6. 0.3 32 km NE of Amboy, Washington
  7. 0.7 21 km ESE of Castle Rock, Washington
  8. 1.3 38 km NNE of Amboy, Washington
  9. 1.0 32 km NNE of Amboy, Washington
  10. 0.0 38 km NE of Amboy, Washington
  11. 1.5 37 km NNE of Amboy, Washington
  12. 1.5 31 km E of Kelso, Washington
  13. 2.2 27 km ENE of Yacolt, Washington
  14. 2.0 10 km SSE of Scappoose, Oregon
  15. 1.6 5 km WSW 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.