QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Big Pine, CA

No earthquake was likely felt in Big Pine in the 24 hours to 10:06 am PST (18:06 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 2.3 earthquake was recorded 39 km (24 mi) east-southeast of Big Pine, CA, at 1:50 pm PST on 18 February 2019 (21:50 UTC), 1.3 km deep. 1 person has reported feeling it to USGS.

USGS: 39km ESE of Big Pine, CA

1:50 pm PST, Feb 18, 2019 · · 1.3 km deep · released about 77 lb of TNT

10 km30 km60 km120 km N Inyo County 72 kmEsmeralda County 79 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
1:50 pm PST on 18 February 2019 ()
Where
39 km (24 mi) east-southeast of Big Pine, CA · earthquakes near Big Pine
Magnitude
M 2.3 (ml)
Depth
1.3 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Inyo County, 72 km SE
Nearest mapped fault
Deep Springs fault, 22 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 2781 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 19 km (12 mi) from the epicentre. In Big Pine, 39 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 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 77 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 5,600 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 6.1 46km E of Big Pine, California · 11 km NE of this epicentre
  2. 5.5 10 km N of Independence, California · 37 km SW 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 37.0953, -117.8617. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Inyo County, CA 72 km (45 mi) SE earthquakes near Inyo County
Esmeralda County, NV 79 km (49 mi) NNE earthquakes near Esmeralda County
Tulare County, CA 127 km (79 mi) SW earthquakes near Tulare County
Mono County, CA 128 km (79 mi) NW earthquakes near Mono County

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

Aftershocks so far

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

  1. 1.8 10km NE of Big Pine, CA
  2. 1.6 50 km SSW of Goldfield, Nevada
  3. 1.5 57km NNW of Stovepipe Wells, CA
  4. 2.1 4km SE of Independence, CA
  5. 2.1 61 km WNW of Beatty, Nevada
  6. 2.0 60 km S of Goldfield, Nevada
  7. 2.0 4km NNE of Big Pine, CA
  8. 1.9 4km NE of Big Pine, CA
  9. 1.9 4km NE of Big Pine, CA
  10. 1.5 39 km NNE of Keeler, California
  11. 2.5 7km ENE of Wilkerson, CA
  12. 1.5 47km NNW of Stovepipe Wells, CA
  13. 1.7 49 km SSW of Goldfield, Nevada
  14. 3.3 50 km SSW of Goldfield, Nevada
  15. 1.9 49 km SSW of Goldfield, Nevada

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.