QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

26 km SW of Klamath, CA

· 28 km deep · released about 100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Del Norte County 49 kmHumboldt County 72 kmTrinity County 116 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
28 km below the surface
Felt
no reports yet
Nearest
Del Norte County, 49 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 531 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 100 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 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.4× the energy of this one
  4. This earthquake M 2.4 about 100 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 41.3305, -124.1643. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Del Norte County, CA 49 km (30 mi) SSW of here earthquakes near Del Norte County
Humboldt County, CA 72 km (45 mi) NNW of here earthquakes near Humboldt County
Trinity County, CA 116 km (72 mi) NW of here earthquakes near Trinity County
Josephine County, OR 127 km (79 mi) SSW of here earthquakes near Josephine County

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

Aftershocks so far

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

  1. 2.4 20 km SE of Klamath, CA
  2. 1.6 11 km NE of Blue Lake, CA
  3. 2.3 4 km ENE of Trinidad, CA
  4. 2.5 14 km WSW of McKinleyville, CA
  5. 2.4 14 km WSW of McKinleyville, CA
  6. 1.9 12 km NE of Westhaven-Moonstone, CA
  7. 2.6 15 km WSW of McKinleyville, CA
  8. 2.4 38 km WNW of Trinidad, CA
  9. 2.2 14 km NNW of Trinidad, CA
  10. 3.2 28 km NW of Trinidad, CA
  11. 2.4 8 km SSE of Weitchpec, CA
  12. 1.8 8 km ESE of Westhaven-Moonstone, CA
  13. 3.2 4 km NNE of Blue Lake, CA
  14. 2.4 14 km SSW of Crescent City, CA
  15. 2.3 17 km NNW of Trinidad, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2024-01-23 — it released about 930 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.