QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

2 km SW of Lake Shore, Washington

· 19 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 21 kmMultnomah County 27 kmWashington County 32 kmColumbia County 41 kmCowlitz County 58 kmYamhill County 67 kmClackamas County 70 kmSkamania County 71 kmHood River 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 2.3 (ml)
Depth
19 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Clark County, 21 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 45.6730, -122.7163. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, WA 21 km (13 mi) WSW of here earthquakes near Clark County
Multnomah County, OR 27 km (17 mi) WNW of here earthquakes near Multnomah County
Washington County, OR 32 km (20 mi) ENE of here earthquakes near Washington County
Columbia County, OR 41 km (26 mi) SE of here earthquakes near Columbia County
Cowlitz County, WA 58 km (36 mi) S of here earthquakes near Cowlitz County
Yamhill County, OR 67 km (41 mi) NE of here earthquakes near Yamhill County

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

Aftershocks so far

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

  1. 1.7 4 km NNE of Kalama, Washington
  2. 1.6 3 km E of Sherwood, Oregon
  3. 1.8 5 km WNW of Deer Island, Oregon
  4. 1.5 9 km ENE of Kalama, Washington
  5. 1.8 3 km WNW of Mulino, Oregon
  6. 2.1 12 km E of Yacolt, Washington
  7. 1.9 4 km ESE of Beavercreek, Oregon
  8. 1.6 3 km NNE of West Haven, Oregon
  9. 1.6 1 km E of Lewisville, Washington
  10. 1.8 7 km WNW of Warren, Oregon
  11. 1.8 5 km NNE of La Center, Washington
  12. 1.8 3 km ENE of Venersborg, Washington
  13. 2.0 8 km WNW of Warren, Oregon
  14. 1.7 14 km W of Deer Island, Oregon
  15. 1.7 2 km SSE of Sherwood, Oregon

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.