QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

1 km N of Longview, Washington

· 58 km deep · released about 35 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cowlitz County 21 kmColumbia County 26 kmWahkiakum County 41 kmClark County 55 kmClatsop County 61 kmLewis County 64 kmWashington County 68 kmSkamania County 77 kmMultnomah County 79 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 2.0 (ml)
Depth
58 km below the surface
Felt
no reports yet
Nearest
Cowlitz County, 21 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 796 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 35 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 440,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 310,000× the energy of this one
  3. Around the size people start to feel M 3.0 28× the energy of this one
  4. This earthquake M 2.0 about 35 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 46.1533, -122.9385. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cowlitz County, WA 21 km (13 mi) WSW of here earthquakes near Cowlitz County
Columbia County, OR 26 km (16 mi) NNE of here earthquakes near Columbia County
Wahkiakum County, WA 41 km (25 mi) ESE of here earthquakes near Wahkiakum County
Clark County, WA 55 km (34 mi) NW of here earthquakes near Clark County
Clatsop County, OR 61 km (38 mi) ENE of here earthquakes near Clatsop County
Lewis County, WA 64 km (40 mi) SW of here earthquakes near Lewis County

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

Aftershocks so far

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

  1. 1.9 3 km NW of Winlock, Washington
  2. 1.6 2 km NNE of Columbia City, Oregon
  3. 1.6 3 km W of Yacolt, Washington
  4. 1.7 18 km E of West Side Highway, Washington
  5. 1.6 19 km NE of Kalama, Washington
  6. 1.6 3 km W of Winlock, Washington
  7. 1.6 21 km ENE of Kalama, Washington
  8. 1.5 27 km NNW of Amboy, Washington
  9. 1.9 5 km WSW of Yacolt, Washington
  10. 1.9 4 km WSW of Winlock, Washington
  11. 1.6 31 km N of Amboy, Washington
  12. 1.9 5 km NW of Westport, Oregon
  13. 1.8 9 km W of Napavine, Washington
  14. 1.6 12 km NNE of Amboy, Washington
  15. 1.6 3 km ENE of East Cathlamet, 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.