QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

21 km N of Trout Lake, Washington

· 5.5 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Skamania County 38 kmYakima County 67 kmKlickitat County 68 kmHood River County 76 kmLewis County 79 kmClark County 88 kmCowlitz County 89 kmMultnomah County 100 kmPierce County 107 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
5.5 km below the surface
Felt
no reports yet
Nearest
Skamania County, 38 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 984 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 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 46.1928, -121.5215. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Skamania County, WA 38 km (24 mi) ENE of here earthquakes near Skamania County
Yakima County, WA 67 km (41 mi) WSW of here earthquakes near Yakima County
Klickitat County, WA 68 km (42 mi) WNW of here earthquakes near Klickitat County
Hood River County, OR 76 km (47 mi) N of here earthquakes near Hood River County
Lewis County, WA 79 km (49 mi) ESE of here earthquakes near Lewis County
Clark County, WA 88 km (55 mi) ENE of here earthquakes near Clark County

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

Aftershocks so far

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

  1. 2.6 23 km N of Trout Lake, Washington
  2. 0.9 10 km SW of Packwood, Washington
  3. 1.5 20 km S of Packwood, Washington
  4. 1.6 3 km S of Packwood, Washington
  5. 1.9 4 km SW of Packwood, Washington
  6. 2.3 5 km SW of Packwood, Washington
  7. 1.9 5 km NW of White Salmon, Washington
  8. 1.7 41 km SSE of Morton, Washington
  9. 2.2 23 km NNW of Carson, Washington
  10. 1.8 31 km ENE of Yacolt, Washington
  11. 1.5 23 km N of Trout Lake, Washington
  12. 2.4 5 km SW of Packwood, Washington
  13. 1.7 23 km N of Trout Lake, Washington
  14. 2.1 21 km NNW of Carson, Washington
  15. 1.8 14 km SW of Packwood, 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.