QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near West Bishop, CA

Yes: an earthquake was likely felt in West Bishop in the last 24 hours. M 1.9, 8 km (5 mi) NW of West Bishop, at 8:40 am PST on 13 November 2026 (16:40 UTC); the estimated shaking in West Bishop was intensity II (weak). Every earthquake near West Bishop

This page: a magnitude 1.6 earthquake was recorded in West Bishop, CA, at 7:49 pm PST on 18 December 2017 (03:49 UTC), 7.5 km deep.

USGS: 2km ENE of West Bishop, CA

7:49 pm PST, Dec 18, 2017 · · 7.5 km deep · released about 7.8 lb of TNT

10 km30 km60 km120 km N Mono County 72 kmEsmeralda County 84 kmMadera County 118 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
7:49 pm PST on 18 December 2017 ()
Where
in West Bishop, CA · earthquakes near West Bishop
Magnitude
M 1.6 (md)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Mono County, 72 km NNW
Nearest mapped fault
Owens Valley fault, 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 3056 days ago

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 8 km (5 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.

Likely felt in: West Bishop in town, intensity II · Dixon Lane-Meadow Creek 3 km, intensity II · Bishop 3 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 7.8 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.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 55,000 times the energy of this one.

Before 2016, the USGS record lists 36 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 The 1986 Chalfant Valley, California Earthquake · 19 km N of this epicentre
  2. 6.2 9 km SW of Aspen Springs, California · 36 km WNW of this epicentre
  3. 6.1 11 km WNW of Aspen Springs, California · 43 km NW of this epicentre
  4. 6.1 8 km W of Aspen Springs, California · 39 km WNW of this epicentre
  5. 6.1 4 km NNW of Round Valley, California · 18 km NW 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 37.3665, -118.4343. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mono County, CA 72 km (45 mi) NNW earthquakes near Mono County
Esmeralda County, NV 84 km (52 mi) ENE earthquakes near Esmeralda County
Madera County, CA 118 km (73 mi) W earthquakes near Madera County
Fresno County, CA 128 km (79 mi) WSW earthquakes near Fresno County
Inyo County, CA 128 km (80 mi) SE earthquakes near Inyo County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

48 earthquakes have been recorded within 50 km since this one.

  1. 2.5 4km S of Toms Place, CA
  2. 1.9 14km W of Toms Place, CA
  3. 1.6 12km NNE of Dixon Lane-Meadow Creek, CA
  4. 2.6 13km NNE of Round Valley, CA
  5. 1.6 14km SW of Toms Place, CA
  6. 1.8 13km NNE of Dixon Lane-Meadow Creek, CA
  7. 1.6 13km NNE of Dixon Lane-Meadow Creek, CA
  8. 1.9 9km E of Mammoth Lakes, CA
  9. 1.6 13km W of Toms Place, CA
  10. 1.6 6km NW of Big Pine, CA
  11. 2.0 14km ESE of Mammoth Lakes, CA
  12. 2.2 11 km W of Aspen Springs, California
  13. 2.7 14km ESE of Mammoth Lakes, CA
  14. 1.5 12km SE of Mammoth Lakes, CA
  15. 1.6 15km SW 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.