QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

9 km S of Morton, Washington

· 15 km deep · released about 280 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lewis County 14 kmCowlitz County 44 kmSkamania County 56 kmPierce County 65 kmThurston County 67 kmClark County 80 kmColumbia County 86 kmWahkiakum County 90 kmMultnomah County 103 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 2.6 (ml)
Depth
15 km below the surface
Felt
7 reports · strongest reported intensity IV
Nearest
Lewis County, 14 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 401 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 7 people have reported feeling it to USGS.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 53,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 38,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.3× the energy of this one
  4. This earthquake M 2.6 about 280 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 46.4730, -122.2757. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lewis County, WA 14 km (9 mi) SSE of here earthquakes near Lewis County
Cowlitz County, WA 44 km (27 mi) NE of here earthquakes near Cowlitz County
Skamania County, WA 56 km (35 mi) NNW of here earthquakes near Skamania County
Pierce County, WA 65 km (40 mi) S of here earthquakes near Pierce County
Thurston County, WA 67 km (41 mi) SE of here earthquakes near Thurston County
Clark County, WA 80 km (49 mi) NNE of here earthquakes near Clark County

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

Aftershocks so far

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

  1. 1.6 10 km ENE of Ashford, Washington
  2. 1.5 10 km SSE of Toledo, Washington
  3. 1.5 4 km ESE of Mossyrock, Washington
  4. 1.8 7 km ESE of Mossyrock, Washington
  5. 1.9 5 km ESE of Mossyrock, Washington
  6. 1.8 5 km ESE of Mossyrock, Washington
  7. 1.7 12 km SSW of Alder, Washington
  8. 1.6 6 km ESE of Mossyrock, Washington
  9. 1.7 13 km N of Onalaska, Washington
  10. 2.3 38 km SSE of Morton, Washington
  11. 1.7 18 km E of West Side Highway, Washington
  12. 1.6 19 km NE of Kalama, Washington
  13. 1.6 21 km ENE of Kalama, Washington
  14. 1.5 27 km NNW of Amboy, Washington
  15. 2.8 3 km NE of Mineral, 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.