QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

2 km ENE of Lewisville, Washington

· 8.9 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 5 kmMultnomah County 31 kmCowlitz County 44 kmSkamania County 47 kmColumbia County 48 kmWashington County 56 kmHood River County 73 kmClackamas County 77 kmLewis County 85 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 2.1 (ml)
Depth
8.9 km below the surface
Felt
30 reports · strongest reported intensity III
Nearest
Clark County, 5 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3030 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 30 people have reported feeling it to USGS.

How big was it?

This earthquake released about 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 45.8193, -122.4872. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, WA 5 km (3 mi) N of here earthquakes near Clark County
Multnomah County, OR 31 km (19 mi) N of here earthquakes near Multnomah County
Cowlitz County, WA 44 km (28 mi) SSE of here earthquakes near Cowlitz County
Skamania County, WA 47 km (29 mi) WSW of here earthquakes near Skamania County
Columbia County, OR 48 km (30 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

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

  1. 1.5 Washington-Oregon border region
  2. 1.8 12 km NNW of Amboy, Washington
  3. 1.7 11 km WNW of Warren, Oregon
  4. 2.0 8 km S of Scappoose, Oregon
  5. 1.6 20 km NE of Kalama, Washington
  6. 1.6 8 km E of Kalama, Washington
  7. 1.5 2 km NNW of Venersborg, Washington
  8. 1.7 23 km NNE of Amboy, Washington
  9. 1.6 1 km NNW of Walnut Grove, Washington
  10. 1.5 14 km ESE of Yacolt, Washington
  11. 1.6 16 km ESE of Yacolt, Washington
  12. 1.8 18 km ESE of Castle Rock, Washington
  13. 1.7 5 km WNW of Deer Island, Oregon
  14. 1.8 3 km NNW of Mill Plain, Washington
  15. 1.6 0 km WSW of Aloha, 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.