Earthquake · reviewed by a seismologist
M 1.7md
Earthquake near Mammoth Lakes, CA
No earthquake was likely felt in Mammoth Lakes in the 24 hours to 12:42 pm PST (20:42 UTC). The last one was M 2.9, 26 km (16 mi) SSE, at 3:54 am PDT on 24 October 2026, estimated intensity II (weak) in town. Every earthquake near Mammoth Lakes
This page: a magnitude 1.7 earthquake was recorded 49 km (30 mi) north-northeast of Mammoth Lakes, CA, at 4:36 am PDT on 27 October 2024 (11:36 UTC), 7.9 km deep.
USGS: 28 km SE of Bodie, CA
- When
- 4:36 am PDT on 27 October 2024 ()
- Where
- 49 km (30 mi) north-northeast of Mammoth Lakes, CA · earthquakes near Mammoth Lakes
- Magnitude
- M 1.7 (md)
- Depth
- 7.9 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 19 km SW
- Nearest mapped fault
- Huntoon Valley fault system, 5 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 735 days ago
Earthquake alerts for Mammoth Lakes, CA
Get a notification in this browser when USGS records an earthquake near Mammoth Lakes, 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 9 km (6 mi) from the epicentre. In Mammoth Lakes, 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 10 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 1,500,000× 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 92× the energy of this one
- This earthquake M 1.7 about 10 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 5.6 on 2016-12-28 — about 730,000 times the energy of this one.
Before 2016, the USGS record lists 26 earthquakes of M5 or more within 50 km; the five largest:
- 6.3 The 1934 Excelsior Mountains, Nevada Earthquake · 43 km NE of this epicentre
- 6.0 7 km ENE of Mammoth Lakes, California · 44 km SSW of this epicentre
- 5.9 8 km NNE of Mammoth Lakes, California · 41 km SSW of this epicentre
- 5.8 3 km NE of Mono City, California · 32 km W of this epicentre
- 5.7 12 km ESE of Mammoth Lakes, California · 49 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 38.0552, -118.7562. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mono County, CA | 19 km (12 mi) | SW | earthquakes near Mono County |
| Mineral County, NV | 59 km (37 mi) | NNE | earthquakes near Mineral County |
| Esmeralda County, NV | 103 km (64 mi) | ESE | earthquakes near Esmeralda County |
| Tuolumne County, CA | 106 km (66 mi) | W | earthquakes near Tuolumne County |
| Alpine County, CA | 111 km (69 mi) | NW | earthquakes near Alpine County |
| Lyon County, NV | 114 km (71 mi) | NNW | earthquakes near Lyon County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
23 earthquakes have been recorded within 50 km since this one.
- 1.6 27 km SSW of Mina, Nevada
- 1.5 29 km NW of Benton, California
- 1.6 34 km E of Lee Vining, CA
- 2.4 18 km SSE of Bodie, CA
- 1.6 24 km E of Lee Vining, CA
- 2.9 27 km SE of Bodie, CA
- 1.5 26 km NNE of Benton, California
- 1.7 42 km NNE of Toms Place, CA
- 3.0 42 km NNE of Toms Place, CA
- 2.5 42 km SSW of Qualeys Camp, NV
- 2.1 28 km SSW of Hawthorne, Nevada
- 1.5 41 km NNE of Toms Place, CA
- 1.8 41 km NNE of Toms Place, CA
- 1.5 41 km NNE of Toms Place, CA
- 1.5 31 km SE of Bodie, 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.