QuakeIndex

Earthquake · automatic estimate, may change

M 2.6md

23 km WSW of Mount Hebron, CA

· 3.4 km deep · released about 270 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Siskiyou County 27 kmJackson County 92 kmShasta County 101 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
3.4 km below the surface
Felt
no reports yet
Nearest
Siskiyou County, 27 km WSW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 301 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 270 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 57,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 40,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.6× the energy of this one
  4. This earthquake M 2.6 about 270 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 41.6573, -122.2260. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Siskiyou County, CA 27 km (17 mi) ENE of here earthquakes near Siskiyou County
Jackson County, OR 92 km (57 mi) SSE of here earthquakes near Jackson County
Shasta County, CA 101 km (63 mi) N of here earthquakes near Shasta County
Klamath County, OR 124 km (77 mi) SSW of here earthquakes near Klamath County
Trinity County, CA 135 km (84 mi) NNE of here earthquakes near Trinity County
Josephine County, OR 138 km (86 mi) SE of here earthquakes near Josephine County

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

Aftershocks so far

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

  1. 2.0 13 km SSW of Tennant, CA
  2. 1.8 14 km NNE of McCloud, CA
  3. 1.6 12 km N of McCloud, CA
  4. 2.1 13 km N of McCloud, CA
  5. 1.7 13 km NNE of McCloud, CA
  6. 1.9 3 km WNW of Mount Shasta, CA
  7. 2.0 26 km ENE of Hornbrook, CA
  8. 2.1 13 km SSE of Tennant, CA
  9. 1.8 14 km NNE of McCloud, CA
  10. 2.0 13 km SSE of Tennant, CA
  11. 1.9 13 km SSE of Tennant, CA
  12. 1.9 16 km SSW of Tennant, CA
  13. 1.8 16 km SSW of Tennant, 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.