QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

7km S of Somes Bar, CA

· 32 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Del Norte County 65 kmHumboldt County 77 kmTrinity County 79 kmSiskiyou County 84 kmJosephine County 120 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 2.4 (md)
Depth
32 km below the surface
Felt
no reports yet
Nearest
Del Norte County, 65 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1503 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 41.3110, -123.4665. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Del Norte County, CA 65 km (40 mi) SE of here earthquakes near Del Norte County
Humboldt County, CA 77 km (48 mi) NNE of here earthquakes near Humboldt County
Trinity County, CA 79 km (49 mi) NNW of here earthquakes near Trinity County
Siskiyou County, CA 84 km (52 mi) WSW of here earthquakes near Siskiyou County
Josephine County, OR 120 km (75 mi) S of here earthquakes near Josephine County
Shasta County, CA 134 km (83 mi) WNW of here earthquakes near Shasta County

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

Aftershocks so far

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

  1. 2.4 20 km ENE of Willow Creek, CA
  2. 2.3 21 km E of Willow Creek, CA
  3. 2.4 8 km SSE of Weitchpec, CA
  4. 2.6 27 km ENE of Willow Creek, CA
  5. 2.8 8 km E of Willow Creek, CA
  6. 2.1 6 km NW of Somes Bar, CA
  7. 2.8 24 km E of Willow Creek, CA
  8. 2.6 21 km SSE of Somes Bar, CA
  9. 3.4 9 km ESE of Willow Creek, CA
  10. 2.0 14 km WNW of Willow Creek, CA
  11. 2.1 9 km E of Willow Creek, CA
  12. 2.7 28 km ENE of Willow Creek, CA
  13. 2.2 26 km E of Willow Creek, CA
  14. 2.5 10 km NW of Willow Creek, CA
  15. 2.3 38 km E of Willow Creek, CA

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.