Earthquake · reviewed by a seismologist
M 1.7md
Earthquake near Truckee, CA
No earthquake was likely felt in Truckee in the 24 hours to 8:37 am PST (16:37 UTC). The last one was M 3.3, 49 km (31 mi) S, at 3:00 am PDT on 2 October 2026, estimated intensity II (weak) in town; 532 felt reports to USGS. Every earthquake near Truckee
This page: a magnitude 1.7 earthquake was recorded 20 km (12 mi) northwest of Truckee, CA, at 6:16 am PDT on 23 September 2022 (13:16 UTC), 11 km deep.
USGS: 20km NW of Truckee, CA
42 km (26 mi) WSW of Reno, NV
- When
- 6:16 am PDT on 23 September 2022 ()
- Where
- 20 km (12 mi) northwest of Truckee, CA · earthquakes near Truckee
- Magnitude
- M 1.7 (md)
- Depth
- 11 km below the surface
- Felt
- no reports yet
- Nearest
- Sierra County, 21 km NW
- Nearest mapped fault
- Mohawk Valley fault, 7 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 1511 days ago
Earthquake alerts for Truckee, 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 6 km (4 mi) from the epicentre. In Truckee, 20 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.
Earthquakes near other towns within 30 km: Verdi.
How big was it?
This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 4.7 on 2021-05-07 — about 27,000 times the energy of this one.
Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:
- 6.0 Near Reno, Nevada · 45 km E of this epicentre
- 6.0 6 km WNW of Verdi, California · 23 km ENE of this epicentre
- 5.9 9 km NW of Truckee, California · 10 km SE of this epicentre
- 5.6 5 km NE of Loyalton, California · 30 km NNE of this epicentre
- 5.3 11 km N of Soda Springs, California · 8 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 39.4695, -120.3268. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Sierra County, CA | 21 km (13 mi) | NW | earthquakes near Sierra County |
| Nevada County, CA | 43 km (27 mi) | WSW | earthquakes near Nevada County |
| Placer County, CA | 57 km (35 mi) | SW | earthquakes near Placer County |
| Carson City, NV | 61 km (38 mi) | SE | earthquakes near Carson City |
| Storey County, NV | 69 km (43 mi) | E | earthquakes near Storey County |
| Plumas County, CA | 72 km (45 mi) | NW | earthquakes near Plumas County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 1.7 6 km S of Cold Springs, Nevada
- 2.5 6 km S of Cold Springs, Nevada
- 1.5 7 km S of Cold Springs, Nevada
- 1.5 7 km S of Cold Springs, Nevada
- 2.2 7 km S of Cold Springs, Nevada
- 3.1 6 km S of Cold Springs, Nevada
- 3.7 Nevada
- 1.6 7 km S of Cold Springs, Nevada
- 1.7 13km N of Tahoe Vista, CA
- 2.3 4km SSE of Truckee, CA
- 1.6 Northern California
- 2.2 17km WSW of Loyalton, CA
- 1.8 12 km E of Floriston, California
- 2.0 22km WNW of Truckee, CA
- 1.9 1 km NE of Carnelian Bay, 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.