Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Truckee, CA
No earthquake was likely felt in Truckee in the 24 hours to 9:27 pm PST (05:27 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 27 km (17 mi) southwest of Truckee, CA, at 8:25 pm PDT on 17 October 2023 (03:25 UTC), 10 km deep.
USGS: 14 km S of Kingvale, California
- When
- 8:25 pm PDT on 17 October 2023 ()
- Where
- 27 km (17 mi) southwest of Truckee, CA · earthquakes near Truckee
- Magnitude
- M 1.7 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Placer County, 28 km WSW
- Nearest mapped fault
- Tahoe-Sierra frontal fault, 19 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 1121 days ago
Earthquake alerts for Truckee, CA
Get a notification in this browser when USGS records an earthquake near Truckee, 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 Truckee, 27 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: Sunnyside-Tahoe City, Dollar Point.
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 4 earthquakes of M5 or more within 50 km:
- 5.9 9 km NW of Truckee, California · 28 km NE of this epicentre
- 5.3 11 km N of Soda Springs, California · 27 km N of this epicentre
- 5.1 8 km SSW of Kingvale, California · 7 km N of this epicentre
- 5.0 Nevada County, California · 46 km WNW 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 39.1866, -120.4429. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Placer County, CA | 28 km (17 mi) | WSW | earthquakes near Placer County |
| Nevada County, CA | 31 km (19 mi) | WNW | earthquakes near Nevada County |
| Sierra County, CA | 44 km (27 mi) | N | earthquakes near Sierra County |
| El Dorado County, CA | 45 km (28 mi) | S | earthquakes near El Dorado County |
| Carson City, NV | 60 km (37 mi) | E | earthquakes near Carson City |
| Yuba County, CA | 78 km (49 mi) | W | earthquakes near Yuba County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 2.1 6 km SSE of Floriston, California
- 1.8 4 km ESE of Truckee, CA
- 2.9 14 km SW of Loyalton, CA
- 2.3 14 km SW of Loyalton, CA
- 2.2 13 km SSW of Loyalton, CA
- 2.9 14 km SW of Loyalton, CA
- 1.5 5 km SE of Floriston, California
- 2.3 19 km SW of Whitehawk, CA
- 2.4 10 km NNW of Truckee, CA
- 2.6 18 km W of Truckee, CA
- 1.8 21 km WNW of Sunnyside-Tahoe City, CA
- 2.1 3 km SW of Tahoe Vista, CA
- 2.5 25 km WNW of Sunnyside-Tahoe City, CA
- 1.8 26 km WNW of Sunnyside-Tahoe City, CA
- 2.2 30 km W of Truckee, 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
- 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.