Earthquake · reviewed by a seismologist
M 1.6md
Earthquake near Bishop, CA
No earthquake was likely felt in Bishop in the 24 hours to 8:26 am PST (16:26 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 1.6 earthquake was recorded 21 km (13 mi) northwest of Bishop, CA, at 9:49 am PDT on 17 March 2021 (16:49 UTC), 10 km deep.
USGS: 12km NNE of Round Valley, CA
- When
- 9:49 am PDT on 17 March 2021 ()
- Where
- 21 km (13 mi) northwest of Bishop, CA · earthquakes near Bishop
- Magnitude
- M 1.6 (md)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 54 km NNW
- Nearest mapped fault
- Long Valley fault, 9 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 2066 days ago
Earthquake alerts for Bishop, CA
Get a notification in this browser when USGS records an earthquake near Bishop, 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 3 km (2 mi) from the epicentre. In Bishop, 21 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: Dixon Lane-Meadow Creek, West Bishop.
How big was it?
This earthquake released about 6.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,300,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
- Around the size people start to feel M 3.0 140× the energy of this one
- This earthquake M 1.6 about 6.6 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 65,000 times the energy of this one.
Before 2016, the USGS record lists 41 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1986 Chalfant Valley, California Earthquake · 9 km ENE of this epicentre
- 6.2 9 km SW of Aspen Springs, California · 23 km W of this epicentre
- 6.1 11 km WNW of Aspen Springs, California · 27 km WNW of this epicentre
- 6.1 8 km W of Aspen Springs, California · 24 km WNW of this epicentre
- 6.1 4 km NNW of Round Valley, 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 37.5123, -118.5417. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mono County, CA | 54 km (33 mi) | NNW | earthquakes near Mono County |
| Esmeralda County, NV | 85 km (53 mi) | ENE | earthquakes near Esmeralda County |
| Madera County, CA | 112 km (70 mi) | WSW | earthquakes near Madera County |
| Mineral County, NV | 112 km (70 mi) | N | earthquakes near Mineral County |
| Fresno County, CA | 129 km (80 mi) | SW | earthquakes near Fresno County |
| Inyo County, CA | 146 km (91 mi) | SE | earthquakes near Inyo County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 1.6 14km SW of Toms Place, CA
- 1.7 14km SW of Toms Place, CA
- 1.8 40km NNE of Toms Place, CA
- 2.1 40km NNE of Toms Place, CA
- 1.6 39km NNE of Toms Place, CA
- 1.8 14km ESE of Mammoth Lakes, CA
- 2.2 17km WSW of Toms Place, CA
- 1.8 4km ENE of Round Valley, CA
- 2.3 13km W of Toms Place, CA
- 1.8 16km SW of Toms Place, CA
- 1.6 13km W of Toms Place, CA
- 1.7 28km NNW of Deep Springs, CA
- 1.9 10km WSW of Toms Place, CA
- 1.7 42km S of Qualeys Camp, NV
- 2.6 16km WSW 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.