QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near West Bishop, CA

No earthquake was likely felt in West Bishop in the 24 hours to 3:19 am PST (11:19 UTC). The last one was M 2.3, 15 km (10 mi) WNW, at 4:24 pm PDT on 24 October 2026, estimated intensity II (weak) in town. Every earthquake near West Bishop

This page: a magnitude 2.6 earthquake was recorded 21 km (13 mi) west of West Bishop, CA, at 2:54 pm PDT on 18 August 2026 (21:54 UTC), 14 km deep.

USGS: 11 km SW of Round Valley, CA

2:54 pm PDT, Aug 18, 2026 · · 14 km deep · released about 250 lb of TNT

10 km30 km60 km120 km N Mono County 65 kmMadera County 95 kmEsmeralda County 105 kmFresno County 107 kmMariposa County 111 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
2:54 pm PDT on 18 August 2026 ()
Where
21 km (13 mi) west of West Bishop, CA · earthquakes near West Bishop
Magnitude
M 2.6 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Mono County, 65 km NNW
Nearest mapped fault
Round Valley fault, 7 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 53 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 19 km (12 mi) from the epicentre. In West 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, Bishop.

How big was it?

This earthquake released about 250 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 61,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 43,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.8× the energy of this one
  4. This earthquake M 2.6 about 250 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 1,700 times the energy of this one.

Before 2016, the USGS record lists 38 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 The 1986 Chalfant Valley, California Earthquake · 31 km NE of this epicentre
  2. 6.2 9 km SW of Aspen Springs, California · 20 km NNW of this epicentre
  3. 6.1 11 km WNW of Aspen Springs, California · 30 km NNW of this epicentre
  4. 6.1 8 km W of Aspen Springs, California · 25 km NNW of this epicentre
  5. 6.1 4 km NNW of Round Valley, California · 15 km NNE 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 37.3457, -118.6910. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mono County, CA 65 km (41 mi) NNW earthquakes near Mono County
Madera County, CA 95 km (59 mi) W earthquakes near Madera County
Esmeralda County, NV 105 km (65 mi) ENE earthquakes near Esmeralda County
Fresno County, CA 107 km (67 mi) SW earthquakes near Fresno County
Mariposa County, CA 111 km (69 mi) WNW earthquakes near Mariposa County
Tuolumne County, CA 135 km (84 mi) NW earthquakes near Tuolumne County

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

Aftershocks so far

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

  1. 2.3 2 km W of Round Valley, CA
  2. 1.6 13 km WSW of Toms Place, CA
  3. 2.5 17 km SW of Toms Place, CA
  4. 1.7 18 km SW of Toms Place, CA
  5. 2.9 19 km SW of Toms Place, CA
  6. 1.3 6 km SSW of Toms Place, CA
  7. 1.0 18 km SW of Toms Place, CA
  8. 0.9 4 km WNW of Mammoth Lakes, CA
  9. 1.4 17 km SW of Toms Place, CA
  10. 1.5 19 km SW of Toms Place, CA
  11. 1.6 17 km WSW of Toms Place, CA
  12. 1.1 4 km W of Toms Place, CA
  13. 1.6 12 km SSW of Aspen Springs, California
  14. 2.4 19 km SW of Toms Place, CA
  15. 1.0 33 km SSW 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

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