Earthquake · automatic estimate, may change
M 2.5md
Earthquake near Big Pine, CA
No earthquake was likely felt in Big Pine in the 24 hours to 7:01 am PST (15:01 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 47 km (29 mi) east-northeast of Big Pine, CA, at 8:42 am PDT on 1 August 2025 (15:42 UTC), less than 1 km deep. The magnitude and location are an automatic first estimate and may change.
USGS: 14 km E of Deep Springs, CA
- When
- 8:42 am PDT on 1 August 2025 ()
- Where
- 47 km (29 mi) east-northeast of Big Pine, CA · earthquakes near Big Pine
- Magnitude
- M 2.5 (md)
- Depth
- -0.3 km below the surface
- Felt
- no reports yet
- Nearest
- Esmeralda County, 48 km NNE
- Nearest mapped fault
- Fish Lake Valley fault, 3 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 462 days ago
Earthquake alerts for Big Pine, CA
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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 22 km (14 mi) from the epicentre. In Big Pine, 47 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 160 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.
- Mineral, Virginia 2011 M 5.8 92,000× the energy of this one
- Magna, Utah 2020 M 5.7 65,000× the energy of this one
- Around the size people start to feel M 3.0 5.8× the energy of this one
- This earthquake M 2.5 about 160 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 2022-01-06 — about 2,500 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 6.1 46km E of Big Pine, California · 24 km S of this epicentre
- 5.8 10 km NNE of Dixon Lane-Meadow Creek, California · 49 km WNW 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 37.3758, -117.8263. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Esmeralda County, NV | 48 km (30 mi) | NNE | earthquakes near Esmeralda County |
| Inyo County, CA | 98 km (61 mi) | SSE | earthquakes near Inyo County |
| Mono County, CA | 110 km (68 mi) | WNW | earthquakes near Mono County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 1.5 19 km SE of Silver Peak, Nevada
- 1.6 43 km SSE of Dyer, Nevada
- 1.6 21 km SSW of Silver Peak, Nevada
- 1.6 20 km SSW of Silver Peak, Nevada
- 2.1 21 km SSW of Silver Peak, Nevada
- 1.9 7 km SE of Deep Springs, CA
- 2.2 11 km ENE of Big Pine, CA
- 1.5 15 km NE of Big Pine, California
- 1.5 57 km SSW of Goldfield, Nevada
- 1.8 28 km S of Dyer, Nevada
- 1.7 38 km ENE of Big Pine, California
- 1.6 15 km WNW of Silver Peak, Nevada
- 1.8 23 km SSE of Dyer, Nevada
- 1.8 40 km ENE of Independence, California
- 1.8 11 km NE of Big Pine, California
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.