QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

6 km NNE of Dunsmuir, California

· 5.4 km deep · released about 220 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Siskiyou County 44 kmShasta County 58 kmTrinity County 100 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 (md)
Depth
5.4 km below the surface
Felt
43 reports · strongest reported intensity IV
Nearest
Siskiyou County, 44 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3516 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 43 people have reported feeling it to USGS.

How big was it?

This earthquake released about 220 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 68,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 48,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.3× the energy of this one
  4. This earthquake M 2.6 about 220 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 41.2592, -122.2393. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Siskiyou County, CA 44 km (27 mi) SE of here earthquakes near Siskiyou County
Shasta County, CA 58 km (36 mi) NNW of here earthquakes near Shasta County
Trinity County, CA 100 km (62 mi) NE of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 2.4 6km NW of Big Bend, CA
  2. 2.1 6km NW of Big Bend, CA
  3. 1.6 27km NNE of Shasta Lake, CA
  4. 1.7 17km E of McCloud, CA
  5. 2.1 8km NW of Montgomery Creek, CA
  6. 2.4 28km N of Shasta Lake, CA
  7. 1.6 10km ENE of Mount Shasta, CA
  8. 1.8 22km SW of Mount Hebron, CA
  9. 1.9 21km SSW of Dunsmuir, CA
  10. 1.5 21km SSW of Dunsmuir, CA
  11. 1.6 24km N of Shasta Lake, CA
  12. 1.7 22km SSW of Dunsmuir, CA
  13. 2.0 23km WNW of Montgomery Creek, CA
  14. 1.6 22km SW of Mount Hebron, CA
  15. 2.0 17km NE of Big Bend, 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.