QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Weaverville, CA

No earthquake was likely felt in Weaverville in the 24 hours to 5:13 am PST (13:13 UTC). The last one was M 3.7, 65 km (40 mi) WSW, at 2:44 pm PDT on 7 September 2026, estimated intensity II (weak) in town; 15 felt reports to USGS. Every earthquake near Weaverville

This page: a magnitude 2.3 earthquake was recorded 43 km (27 mi) north-northwest of Weaverville, CA, at 10:36 am PDT on 26 April 2025 (17:36 UTC), 34 km deep.

USGS: 38 km E of Willow Creek, CA

10:36 am PDT, Apr 26, 2025 · · 34 km deep · released about 91 lb of TNT

10 km30 km60 km120 km N Trinity County 47 kmHumboldt County 72 kmSiskiyou County 81 kmDel Norte County 100 kmShasta County 104 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
10:36 am PDT on 26 April 2025 ()
Where
43 km (27 mi) north-northwest of Weaverville, CA · earthquakes near Weaverville
Magnitude
M 2.3 (md)
Depth
34 km below the surface
Felt
no reports yet
Nearest
Trinity County, 47 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 556 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Weaverville, 43 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 91 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 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× 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 91 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.6 26 km NNW of Willow Creek, California · 49 km W of this epicentre
  2. 5.4 3 km NNW of Burnt Ranch, California · 35 km SW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 41.0663, -123.2085. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Trinity County, CA 47 km (29 mi) S earthquakes near Trinity County
Humboldt County, CA 72 km (45 mi) WSW earthquakes near Humboldt County
Siskiyou County, CA 81 km (50 mi) NE earthquakes near Siskiyou County
Del Norte County, CA 100 km (62 mi) NW earthquakes near Del Norte County
Shasta County, CA 104 km (64 mi) ESE earthquakes near Shasta County
Tehama County, CA 133 km (83 mi) SE earthquakes near Tehama County

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

Aftershocks so far

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

  1. 2.0 12 km NW of Hayfork, CA
  2. 1.9 16 km SSE of Willow Creek, CA
  3. 1.9 12 km ESE of Willow Creek, CA
  4. 2.2 10 km NNW of Willow Creek, CA
  5. 1.9 16 km E of Willow Creek, CA
  6. 2.5 28 km NW of Weaverville, CA
  7. 2.1 17 km ENE of Willow Creek, CA
  8. 2.0 13 km E of Willow Creek, CA
  9. 2.1 27 km ENE of Willow Creek, CA
  10. 2.6 30 km ESE of Somes Bar, CA
  11. 2.5 24 km SSE of Somes Bar, CA
  12. 2.3 13 km E of Weitchpec, CA
  13. 2.8 24 km WNW of Weaverville, CA
  14. 2.7 33 km SSE of Somes Bar, CA
  15. 2.4 20 km ENE 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.