QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

21km NNW of French Gulch, CA

· 16 km deep · released about 29 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Trinity County 45 kmShasta County 56 kmSiskiyou County 79 kmTehama County 93 kmHumboldt County 106 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 2.0 (md)
Depth
16 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Trinity County, 45 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2120 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 29 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 370,000× the energy of this one
  3. Around the size people start to feel M 3.0 33× the energy of this one
  4. This earthquake M 2.0 about 29 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 40.8905, -122.6903. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Trinity County, CA 45 km (28 mi) NE of here earthquakes near Trinity County
Shasta County, CA 56 km (35 mi) WNW of here earthquakes near Shasta County
Siskiyou County, CA 79 km (49 mi) S of here earthquakes near Siskiyou County
Tehama County, CA 93 km (58 mi) NNW of here earthquakes near Tehama County
Humboldt County, CA 106 km (66 mi) ENE of here earthquakes near Humboldt County
Del Norte County, CA 144 km (90 mi) SE of here earthquakes near Del Norte County

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

Aftershocks so far

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

  1. 1.6 2km WNW of Shasta Lake, CA
  2. 1.8 12km NE of Bella Vista, CA
  3. 2.5 11km NNE of Bella Vista, CA
  4. 2.2 6km NW of Redding, CA
  5. 1.7 4km ENE of Shasta, CA
  6. 2.5 4km ENE of Shasta, CA
  7. 1.8 4km E of Shasta, CA
  8. 1.7 4km NW of Bella Vista, CA
  9. 2.1 2km NW of Bella Vista, CA
  10. 2.0 21km WSW of Dunsmuir, CA
  11. 1.6 4km W of Shasta Lake, CA
  12. 1.6 3km WSW of Shasta Lake, CA
  13. 2.3 15km W of Weaverville, CA
  14. 1.6 8km NE of Shasta Lake, CA
  15. 2.1 24km WNW of Weaverville, 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.