QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

Earthquake near Lone Pine, CA

No earthquake was likely felt in Lone Pine in the 24 hours to 1:00 pm PST (21:00 UTC). The last one was M 2.2, 16 km (10 mi) SE, at 9:24 pm PDT on 29 October 2026, estimated intensity II (weak) in town. Every earthquake near Lone Pine

This page: a magnitude 3.0 earthquake was recorded 49 km (31 mi) south of Lone Pine, CA, at 9:32 pm PST on 4 March 2021 (05:32 UTC), 1.7 km deep. 1 person has reported feeling it to USGS.

USGS: 14km SSW of Olancha, CA

9:32 pm PST, Mar 4, 2021 · · 1.7 km deep · released about 890 lb of TNT

Every earthquake near Lone Pine Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tulare County 64 kmInyo County 74 kmKern County 109 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
9:32 pm PST on 4 March 2021 ()
Where
49 km (31 mi) south of Lone Pine, CA · earthquakes near Lone Pine
Magnitude
M 3.0 (ml)
Depth
1.7 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Tulare County, 64 km W
Nearest mapped fault
Southern Sierra Nevada fault, 10 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 1557 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 36 km (22 mi) from the epicentre. In Lone Pine, 49 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 890 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 380,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 17,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 890 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 5.8 on 2020-06-24 — about 17,000 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. 5.3 27km E of Coso Junction, California · 39 km ESE of this epicentre
  2. 5.2 28km E of Coso Junction, California · 40 km ESE of this epicentre
  3. 5.2 7km ESE of Coso Junction, CA · 24 km SE of this epicentre
  4. 5.2 18km NE of Olancha, CA · 32 km NE of this epicentre
  5. 5.1 13km SE of Little Lake, CA · 41 km SE 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 36.1628, -118.0693. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Tulare County, CA 64 km (40 mi) W earthquakes near Tulare County
Inyo County, CA 74 km (46 mi) NE earthquakes near Inyo County
Kern County, CA 109 km (67 mi) SSW earthquakes near Kern County

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

Aftershocks so far

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

  1. 2.3 14km NE of Coso Junction, CA
  2. 1.7 21km E of Little Lake, CA
  3. 2.2 15km ESE of Little Lake, CA
  4. 2.1 29km W of Olancha, CA
  5. 1.6 10km NE of Coso Junction, CA
  6. 1.5 10km NE of Coso Junction, CA
  7. 1.9 7km ESE of Lone Pine, CA
  8. 1.8 14km SSW of Olancha, CA
  9. 2.7 33km ENE of Coso Junction, CA
  10. 1.6 9km ENE of Coso Junction, CA
  11. 1.8 14km SE of Olancha, CA
  12. 1.9 6km ESE of Lone Pine, CA
  13. 1.8 21km ESE of Little Lake, CA
  14. 2.2 7km ESE of Lone Pine, CA
  15. 1.7 20km ESE of Little Lake, 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.