Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Susanville, CA
No earthquake was likely felt in Susanville in the 24 hours to 5:12 pm PST (01:12 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 1.5 earthquake was recorded 49 km (30 mi) east-southeast of Susanville, CA, at 2:27 am PST on 1 March 2025 (10:27 UTC), 5.6 km deep.
USGS: 11 km N of Herlong, California
81 km (50 mi) NNW of Reno, NV
- When
- 2:27 am PST on 1 March 2025 ()
- Where
- 49 km (30 mi) east-southeast of Susanville, CA · earthquakes near Susanville
- Magnitude
- M 1.5 (ml)
- Depth
- 5.6 km below the surface
- Felt
- no reports yet
- Nearest
- Washoe County, 66 km NE
- Nearest mapped fault
- Warm Springs Valley fault, 10 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 616 days ago
Earthquake alerts for Susanville, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 8 km (5 mi) from the epicentre. In Susanville, 49 km away, the estimate is intensity I (not felt). 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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 30,000 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 5.6 6 km NNE of Doyle, California · 19 km SSE of this epicentre
- 5.3 4 km S of Doyle, California · 29 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 40.2505, -120.1174. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Washoe County, NV | 66 km (41 mi) | NE | earthquakes near Washoe County |
| Plumas County, CA | 67 km (41 mi) | WSW | earthquakes near Plumas County |
| Lassen County, CA | 67 km (42 mi) | NW | earthquakes near Lassen County |
| Sierra County, CA | 82 km (51 mi) | SSW | earthquakes near Sierra County |
| Storey County, NV | 104 km (64 mi) | SSE | earthquakes near Storey County |
| Nevada County, CA | 120 km (74 mi) | SSW | earthquakes near Nevada County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
21 earthquakes have been recorded within 50 km since this one.
- 1.5 23 km ENE of Herlong, California
- 1.9 20 km E of Herlong, California
- 1.8 32 km W of Empire, Nevada
- 1.8 33 km W of Gerlach, Nevada
- 2.1 16 km NE of Litchfield, California
- 2.2 13 km NE of Lake Davis, CA
- 2.2 3 km SE of Johnstonville, CA
- 1.7 32 km WSW of Gerlach, Nevada
- 2.5 21 km NE of Lake Davis, CA
- 1.5 13 km NNW of Sutcliffe, Nevada
- 2.1 17 km SE of Honey Lake, CA
- 1.8 11 km N of Lake Davis, CA
- 2.0 12 km NE of Johnstonville, CA
- 2.6 11 km of Honey Lake, CA
- 1.8 19 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.