Earthquake · reviewed by a seismologist
M 1.8md
Earthquake near Big Pine, CA
No earthquake was likely felt in Big Pine in the 24 hours to 5:47 am PST (13:47 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 1.8 earthquake was recorded 18 km (11 mi) west-southwest of Big Pine, CA, at 7:20 am PST on 15 February 2023 (15:20 UTC), 16 km deep.
USGS: 18km WSW of Big Pine, CA
- When
- 7:20 am PST on 15 February 2023 ()
- Where
- 18 km (11 mi) west-southwest of Big Pine, CA · earthquakes near Big Pine
- Magnitude
- M 1.8 (md)
- Depth
- 16 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 98 km NNW
- Nearest mapped fault
- Southern Sierra Nevada 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 1360 days ago
Earthquake alerts for Big Pine, CA
Get a notification in this browser when USGS records an earthquake near Big Pine, CA. No account or email needed.
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 it was probably too small to be felt, even directly above it. 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.
How big was it?
This earthquake released about 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 870,000× the energy of this one
- Magna, Utah 2020 M 5.7 620,000× the energy of this one
- Around the size people start to feel M 3.0 55× the energy of this one
- This earthquake M 1.8 about 17 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 25,000 times the energy of this one.
Before 2016, the USGS record lists 14 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1986 Chalfant Valley, California Earthquake · 49 km N of this epicentre
- 6.1 4 km NNW of Round Valley, California · 42 km NNW of this epicentre
- 6.0 Near Bishop, California · 27 km N of this epicentre
- 5.8 10 km NNE of Dixon Lane-Meadow Creek, California · 43 km NNE of this epicentre
- 5.7 11 km NE of Mesa, California · 44 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 37.0948, -118.4783. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mono County, CA | 98 km (61 mi) | NNW | earthquakes near Mono County |
| Tulare County, CA | 100 km (62 mi) | SSW | earthquakes near Tulare County |
| Esmeralda County, NV | 107 km (66 mi) | NE | earthquakes near Esmeralda County |
| Fresno County, CA | 111 km (69 mi) | WSW | earthquakes near Fresno County |
| Inyo County, CA | 112 km (70 mi) | ESE | earthquakes near Inyo County |
| Madera County, CA | 113 km (70 mi) | W | earthquakes near Madera County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
3 earthquakes have been recorded within 50 km since this one.
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.