QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Big Pine, CA

No earthquake was likely felt in Big Pine in the 24 hours to 11:33 am PST (19:33 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 2.5 earthquake was recorded 26 km (16 mi) west-southwest of Big Pine, CA, at 12:00 am PDT on 23 July 2024 (07:00 UTC), 12 km deep.

USGS: 26 km WSW of Big Pine, CA

12:00 am PDT, Jul 23, 2024 · · 12 km deep · released about 170 lb of TNT

10 km30 km60 km120 km N Tulare County 93 kmMono County 102 kmFresno County 104 kmMadera County 109 kmInyo County 114 kmEsmeralda County 115 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
12:00 am PDT on 23 July 2024 ()
Where
26 km (16 mi) west-southwest of Big Pine, CA · earthquakes near Big Pine
Magnitude
M 2.5 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Tulare County, 93 km SSW
Nearest mapped fault
Southern Sierra Nevada fault, 12 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 765 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 Big Pine, 26 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.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 2,500 times the energy of this one.

Before 2016, the USGS record lists 8 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.1 4 km NNW of Round Valley, California · 47 km N of this epicentre
  2. 6.0 Near Bishop, California · 34 km NNE of this epicentre
  3. 5.6 6 km WNW of Round Valley, California · 46 km NNW of this epicentre
  4. 5.5 4 km SSW of Bishop, California · 34 km NNE of this epicentre
  5. 5.5 10 km N of Independence, California · 34 km ESE 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 37.0388, -118.5408. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Tulare County, CA 93 km (58 mi) SSW earthquakes near Tulare County
Mono County, CA 102 km (63 mi) NNW earthquakes near Mono County
Fresno County, CA 104 km (64 mi) WSW earthquakes near Fresno County
Madera County, CA 109 km (68 mi) W earthquakes near Madera County
Inyo County, CA 114 km (71 mi) ESE earthquakes near Inyo County
Esmeralda County, NV 115 km (71 mi) NE earthquakes near Esmeralda County

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

Aftershocks so far

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

  1. 2.8 12 km WSW of Wilkerson, CA
  2. 1.9 2 km SW of Dixon Lane-Meadow Creek, CA
  3. 3.8 2 km SW of Round Valley, CA
  4. 1.7 2 km SSW of Round Valley, CA
  5. 1.8 7 km NW of West Bishop, CA
  6. 2.2 8 km ENE of Big Pine, CA
  7. 1.5 30 km WSW of Independence, CA
  8. 2.0 3 km NW of Dixon Lane-Meadow Creek, CA
  9. 1.5 8 km WSW of West Bishop, CA
  10. 1.7 14 km WNW of Round Valley, CA
  11. 1.7 22 km W of Wilkerson, CA
  12. 2.2 5 km NW of Round Valley, CA
  13. 1.6 16 km WSW of Wilkerson, CA
  14. 1.9 5 km N of Big Pine, CA
  15. 1.7 5 km NNW of West Bishop, 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.