QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

9 km ESE of Burnt Ranch, California

· 26 km deep · released about 94 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Trinity County 26 kmHumboldt County 46 kmShasta County 113 kmSiskiyou 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 2.3 (md)
Depth
26 km below the surface
Felt
no reports yet
Nearest
Trinity County, 26 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3264 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 94 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 160,000× 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 10× the energy of this one
  4. This earthquake M 2.3 about 94 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 40.7615, -123.3800. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Trinity County, CA 26 km (16 mi) WNW of here earthquakes near Trinity County
Humboldt County, CA 46 km (29 mi) E of here earthquakes near Humboldt County
Shasta County, CA 113 km (70 mi) W of here earthquakes near Shasta County
Siskiyou County, CA 116 km (72 mi) SW of here earthquakes near Siskiyou County
Tehama County, CA 120 km (75 mi) NW of here earthquakes near Tehama County
Del Norte County, CA 121 km (75 mi) SSE 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

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

  1. 3.4 6km NE of Willow Creek, CA
  2. 1.6 29km NNW of Hayfork, CA
  3. 1.8 19km SSE of Hayfork, CA
  4. 2.1 22km SSW of Willow Creek, CA
  5. 1.9 28km W of Hayfork, CA
  6. 2.5 29km W of Hayfork, CA
  7. 2.3 17km ESE of Hayfork, CA
  8. 2.5 25km W of Hayfork, CA
  9. 2.9 25km E of Weitchpec, CA
  10. 2.5 31km SSE of Somes Bar, CA
  11. 2.1 27km W of Hayfork, CA
  12. 2.2 27km E of Rio Dell, CA
  13. 1.9 24km SSE of Blue Lake, CA
  14. 2.1 13km WSW of Hayfork, CA
  15. 2.0 14km WNW of Willow Creek, 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 4.8 on 2016-07-21 — it released about 5,200 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.