Earthquake · reviewed by a seismologist
M 1.6md
Earthquake near Susanville, CA
No earthquake was likely felt in Susanville in the 24 hours to 8:11 am PST (16:11 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 1.6 earthquake was recorded 46 km (28 mi) south-southeast of Susanville, CA, at 6:30 am PDT on 26 July 2018 (13:30 UTC), 8.2 km deep.
USGS: 20km S of Honey Lake, CA
73 km (45 mi) NW of Reno, NV
- When
- 6:30 am PDT on 26 July 2018 ()
- Where
- 46 km (28 mi) south-southeast of Susanville, CA · earthquakes near Susanville
- Magnitude
- M 1.6 (md)
- Depth
- 8.2 km below the surface
- Felt
- no reports yet
- Nearest
- Plumas County, 38 km WSW
- Nearest mapped fault
- Honey Lake fault, 15 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 3032 days ago
Earthquake alerts for Susanville, CA
Get a notification in this browser when USGS records an earthquake near Susanville, CA. No account or email needed.
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 7 km (4 mi) from the epicentre. In Susanville, 46 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.
Earthquakes near other towns within 30 km: Portola, Janesville.
How big was it?
This earthquake released about 6.4 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 2,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
- Around the size people start to feel M 3.0 150× the energy of this one
- This earthquake M 1.6 about 6.4 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 25,000 times the energy of this one.
Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:
- 5.6 6 km NNE of Doyle, California · 28 km E of this epicentre
- 5.6 5 km NE of Loyalton, California · 41 km SSE of this epicentre
- 5.3 4 km S of Doyle, California · 25 km ESE of this epicentre
- 5.2 3 km N of Blairsden, California · 34 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 40.0595, -120.3903. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Plumas County, CA | 38 km (23 mi) | WSW | earthquakes near Plumas County |
| Sierra County, CA | 55 km (34 mi) | SSW | earthquakes near Sierra County |
| Lassen County, CA | 75 km (47 mi) | NNW | earthquakes near Lassen County |
| Nevada County, CA | 91 km (56 mi) | SSW | earthquakes near Nevada County |
| Washoe County, NV | 97 km (60 mi) | NE | earthquakes near Washoe County |
| Storey County, NV | 101 km (63 mi) | SE | earthquakes near Storey County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 2.0 13 km SSE of Doyle, California
- 1.8 3km NE of Greenville, CA
- 1.7 6 km N of Greenhorn, California
- 1.6 13 km SSE of Doyle, California
- 1.6 12 km NE of Chilcoot-Vinton, California
- 1.7 15km SSW of Susanville, CA
- 1.8 15km SSW of Susanville, CA
- 2.3 6km NNE of Chilcoot-Vinton, CA
- 1.8 4km W of Taylorsville, CA
- 1.8 12km SW of Johnstonville, CA
- 2.4 15km NE of Chilcoot-Vinton, CA
- 2.2 6km WSW of Valley Ranch, CA
- 1.5 4 km W of Patton Village, California
- 2.2 5km SE of Taylorsville, CA
- 1.6 2 km WNW of Sattley, California
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.