Earthquake · reviewed by a seismologist
M 2.3md
Earthquake near Bishop, CA
No earthquake was likely felt in Bishop in the 24 hours to 9:09 am PST (17:09 UTC). The last one was M 2.0, 9 km (5 mi) NW, at 9:02 pm PDT on 30 September 2026, estimated intensity II (weak) in town. Every earthquake near Bishop
This page: a magnitude 2.3 earthquake was recorded 28 km (17 mi) southwest of Bishop, CA, at 11:24 pm PST on 18 January 2023 (07:24 UTC), 7.7 km deep.
USGS: 22km WSW of Wilkerson, CA
- When
- 11:24 pm PST on 18 January 2023 ()
- Where
- 28 km (17 mi) southwest of Bishop, CA · earthquakes near Bishop
- Magnitude
- M 2.3 (md)
- Depth
- 7.7 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 86 km NNW
- Nearest mapped fault
- Round Valley fault, 11 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 1392 days ago
Earthquake alerts for Bishop, 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 18 km (11 mi) from the epicentre. In Bishop, 28 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: West Bishop, Big Pine, Dixon Lane-Meadow Creek.
How big was it?
This earthquake released about 91 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 5.8 170,000× the energy of this one
- Magna, Utah 2020 M 5.7 120,000× the energy of this one
- Around the size people start to feel M 3.0 10× the energy of this one
- This earthquake M 2.3 about 91 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 4.8 on 2016-02-16 — about 4,700 times the energy of this one.
Before 2016, the USGS record lists 28 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1986 Chalfant Valley, California Earthquake · 43 km NNE of this epicentre
- 6.2 9 km SW of Aspen Springs, California · 41 km NNW of this epicentre
- 6.1 8 km W of Aspen Springs, California · 46 km NNW of this epicentre
- 6.1 4 km NNW of Round Valley, California · 32 km N of this epicentre
- 6.0 Near Bishop, California · 23 km NE 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 37.1762, -118.6013. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mono County, CA | 86 km (53 mi) | NNW | earthquakes near Mono County |
| Madera County, CA | 102 km (63 mi) | W | earthquakes near Madera County |
| Fresno County, CA | 104 km (65 mi) | WSW | earthquakes near Fresno County |
| Tulare County, CA | 107 km (66 mi) | S | earthquakes near Tulare County |
| Esmeralda County, NV | 109 km (68 mi) | NE | earthquakes near Esmeralda County |
| Mariposa County, CA | 124 km (77 mi) | WNW | earthquakes near Mariposa County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
46 earthquakes have been recorded within 50 km since this one.
- 1.5 6km E of Round Valley, CA
- 2.0 17km WSW of Toms Place, CA
- 1.5 2km NNE of West Bishop, CA
- 2.0 18km SSW of Deep Springs, CA
- 2.5 3km N of West Bishop, CA
- 1.7 20km WSW of Round Valley, CA
- 2.2 18km SW of Toms Place, CA
- 3.0 16km WSW of Toms Place, CA
- 1.8 18km S of Mammoth Lakes, CA
- 2.5 9km SW of Toms Place, CA
- 2.8 22km S of Mammoth Lakes, CA
- 2.9 22km S of Mammoth Lakes, CA
- 1.7 13km ESE of Mammoth Lakes, CA
- 1.6 4km WSW of Wilkerson, CA
- 2.0 4km E of Round Valley, 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.