QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Susanville, CA

No earthquake was likely felt in Susanville in the 24 hours to 7:20 pm PST (03:20 UTC). The last one was M 2.2, 15 km (9 mi) N, at 8:16 am PDT on 25 September 2026, estimated intensity II (weak) in town. Every earthquake near Susanville

This page: a magnitude 2.3 earthquake was recorded 49 km (31 mi) east-southeast of Susanville, CA, at 5:47 am PST on 3 March 2025 (13:47 UTC), 1.1 km deep.

USGS: 20 km E of Honey Lake, CA

82 km (51 mi) NNW of Reno, NV

5:47 am PST, Mar 3, 2025 · · 1.1 km deep · released about 79 lb of TNT

10 km30 km60 km120 km N Washoe County 65 kmLassen County 67 kmPlumas County 68 kmSierra County 83 kmStorey 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
5:47 am PST on 3 March 2025 ()
Where
49 km (31 mi) east-southeast of Susanville, CA · earthquakes near Susanville
Magnitude
M 2.3 (md)
Depth
1.1 km below the surface
Felt
no reports yet
Nearest
Washoe County, 65 km NE
Nearest mapped fault
Warm Springs Valley fault, 11 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 608 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 20 km (12 mi) from the epicentre. In Susanville, 49 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 79 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 5.8 190,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 79 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

The largest earthquake within 50 km since 2016 was M 4.5 on 2016-08-04 — about 2,000 times the energy of this one.

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

  1. 5.6 6 km NNE of Doyle, California · 20 km S of this epicentre
  2. 5.3 4 km S of Doyle, California · 30 km S 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 40.2568, -120.1095. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Washoe County, NV 65 km (40 mi) NE earthquakes near Washoe County
Lassen County, CA 67 km (42 mi) NW earthquakes near Lassen County
Plumas County, CA 68 km (42 mi) WSW earthquakes near Plumas County
Sierra County, CA 83 km (52 mi) SSW earthquakes near Sierra County
Storey County, NV 104 km (65 mi) SSE earthquakes near Storey County
Nevada County, CA 121 km (75 mi) SSW earthquakes near Nevada County

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

Aftershocks so far

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

  1. 2.0 7 km NE of Lake Davis, CA
  2. 2.5 8 km NE of Lake Davis, CA
  3. 1.9 8 km NE of Lake Davis, CA
  4. 1.9 34 km W of Empire, Nevada
  5. 1.5 23 km ENE of Herlong, California
  6. 1.9 20 km E of Herlong, California
  7. 1.8 32 km W of Empire, Nevada
  8. 1.8 33 km W of Gerlach, Nevada
  9. 2.1 16 km NE of Litchfield, California
  10. 2.2 13 km NE of Lake Davis, CA
  11. 2.2 3 km SE of Johnstonville, CA
  12. 2.2 31 km WSW of Gerlach, Nevada
  13. 1.7 32 km WSW of Gerlach, Nevada
  14. 2.5 21 km NE of Lake Davis, CA
  15. 1.5 13 km NNW of Sutcliffe, Nevada

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.