QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

6km NE of Dunsmuir, CA

· 12 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Siskiyou County 45 kmShasta County 57 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 1.7 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Siskiyou County, 45 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1822 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 41.2513, -122.2312. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Siskiyou County, CA 45 km (28 mi) SE of here earthquakes near Siskiyou County
Shasta County, CA 57 km (35 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

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

  1. 1.5 25 km N of French Gulch, CA
  2. 1.6 8 km NW of McCloud, CA
  3. 1.6 9 km NNW of Montgomery Creek, CA
  4. 1.6 8 km N of Montgomery Creek, CA
  5. 1.7 11 km WNW of Big Bend, CA
  6. 1.6 7km NNW of McCloud, CA
  7. 2.0 24km SW of Mount Hebron, CA
  8. 1.7 10km W of Big Bend, CA
  9. 2.5 17km SSE of Dunsmuir, CA
  10. 1.6 24km WSW of Big Bend, CA
  11. 1.6 14km N of McCloud, CA
  12. 2.1 13km S of Dunsmuir, CA
  13. 1.8 2km SE of Grenada, CA
  14. 2.1 24km N of Shasta Lake, CA
  15. 2.2 5km ENE of McCloud, 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.