QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near Big Pine, CA

No earthquake was likely felt in Big Pine in the 24 hours to 12:29 pm PST (20:29 UTC). The last one was M 1.6, 9 km (6 mi) NNE, at 10:07 am PST on 4 November 2026, estimated intensity II (weak) in town. Every earthquake near Big Pine

This page: a magnitude 1.6 earthquake was recorded 18 km (11 mi) west-southwest of Big Pine, CA, at 12:09 am PDT on 14 September 2025 (07:09 UTC), 7.5 km deep.

USGS: 18 km WSW of Big Pine, CA

12:09 am PDT, Sep 14, 2025 · · 7.5 km deep · released about 8.1 lb of TNT

10 km30 km60 km120 km N Mono County 96 kmTulare County 102 kmEsmeralda County 105 kmFresno County 112 kmMadera County 113 kmInyo County 114 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
12:09 am PDT on 14 September 2025 ()
Where
18 km (11 mi) west-southwest of Big Pine, CA · earthquakes near Big Pine
Magnitude
M 1.6 (md)
Depth
7.5 km below the surface
Felt
no reports yet
Nearest
Mono County, 96 km NNW
Nearest mapped fault
Southern Sierra Nevada fault, 8 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 421 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 9 km (6 mi) from the epicentre. In Big Pine, 18 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, Bishop.

How big was it?

This earthquake released about 8.1 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 1,300,000× 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 8.1 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 53,000 times the energy of this one.

Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 The 1986 Chalfant Valley, California Earthquake · 47 km N of this epicentre
  2. 6.1 4 km NNW of Round Valley, California · 40 km NNW of this epicentre
  3. 6.0 Near Bishop, California · 24 km NNE of this epicentre
  4. 5.8 10 km NNE of Dixon Lane-Meadow Creek, California · 41 km NNE of this epicentre
  5. 5.7 11 km NE of Mesa, California · 42 km N 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 37.1148, -118.4788. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mono County, CA 96 km (59 mi) NNW earthquakes near Mono County
Tulare County, CA 102 km (63 mi) SSW earthquakes near Tulare County
Esmeralda County, NV 105 km (65 mi) NE earthquakes near Esmeralda County
Fresno County, CA 112 km (69 mi) WSW earthquakes near Fresno County
Madera County, CA 113 km (70 mi) W earthquakes near Madera County
Inyo County, CA 114 km (71 mi) ESE earthquakes near Inyo County

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

Aftershocks so far

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

  1. 1.5 7 km NW of Dixon Lane-Meadow Creek, CA
  2. 1.6 11 km NNE of Dixon Lane-Meadow Creek, CA
  3. 1.7 11 km ESE of Big Pine, California
  4. 1.6 17 km SW of Toms Place, CA
  5. 1.7 14 km WSW of Round Valley, CA
  6. 2.4 5 km WNW of Dixon Lane-Meadow Creek, CA
  7. 1.7 7 km NNW of Round Valley, CA
  8. 2.0 18 km SW of Toms Place, CA
  9. 2.6 3 km SE of Wilkerson, CA
  10. 2.5 24 km SE of Big Pine, CA
  11. 3.0 3 km SE of Round Valley, CA
  12. 2.2 3 km SE of Round Valley, CA
  13. 1.8 13 km SW of Big Pine, California
  14. 2.8 21 km SW of Toms Place, CA
  15. 2.9 4 km ENE 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.