Earthquake · reviewed by a seismologist
M 2.3md
41km S of Qualeys Camp, NV
Yes. A magnitude 2.3 earthquake was recorded 41km S of Qualeys Camp, NV, at 10:36 pm PST on 30 December 2019 (06:36 UTC), 6.5 km deep.
- When
- Magnitude
- M 2.3 (md)
- Depth
- 6.5 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 23 km W
- Nearest mapped fault
- Huntoon Valley fault system, 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 2500 days ago
Earthquake alerts for Mammoth Lakes, 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 19 km (12 mi) from the epicentre. 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 82 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
- Magna, Utah 2020 M 5.7 130,000× the energy of this one
- Around the size people start to feel M 3.0 12× the energy of this one
- This earthquake M 2.3 about 82 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 50 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1986 Chalfant Valley, California Earthquake · 48 km SSE of this epicentre
- 6.3 The 1934 Excelsior Mountains, Nevada Earthquake · 43 km NNE of this epicentre
- 6.1 11 km WNW of Aspen Springs, California · 44 km SSW of this epicentre
- 6.1 8 km W of Aspen Springs, California · 47 km SSW of this epicentre
- 6.0 Mammoth Lakes area, California · 43 km SSW 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 37.9475, -118.6108. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mono County, CA | 23 km (15 mi) | W | earthquakes near Mono County |
| Mineral County, NV | 66 km (41 mi) | NNE | earthquakes near Mineral County |
| Esmeralda County, NV | 88 km (55 mi) | ESE | earthquakes near Esmeralda County |
| Tuolumne County, CA | 119 km (74 mi) | W | earthquakes near Tuolumne County |
| Mariposa County, CA | 122 km (76 mi) | WSW | earthquakes near Mariposa County |
| Alpine County, CA | 128 km (79 mi) | NW | earthquakes near Alpine County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 1.6 16km SW of Bodie, CA
- 1.5 11km ENE of Mammoth Lakes, CA
- 1.6 11km ENE of Mammoth Lakes, CA
- 1.6 7km E of Mammoth Lakes, CA
- 1.5 9km ENE of Mammoth Lakes, CA
- 1.6 12km ESE of Mammoth Lakes, CA
- 2.0 33km E of Lee Vining, CA
- 1.7 13km W of Toms Place, CA
- 1.5 13km WNW of Toms Place, CA
- 1.9 13km WNW of Toms Place, CA
- 1.9 11km WNW of Toms Place, CA
- 1.8 14km WNW of Toms Place, CA
- 1.7 13km WNW of Toms Place, CA
- 1.7 13km WNW of Toms Place, CA
- 1.9 10km WNW of Toms Place, 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.