QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Earthquake near Le Grand, CA

No earthquake was likely felt in Le Grand in the 24 hours to 5:17 am PST (13:17 UTC). The last one was M 5.7, 258 km (160 mi) NNE, at 6:29 pm PDT on 13 April 2026, estimated intensity II (weak) in town; 6,515 felt reports to USGS. Every earthquake near Le Grand

This page: a magnitude 2.1 earthquake was recorded 21 km (13 mi) east-northeast of Le Grand, CA, at 7:56 pm PST on 22 November 2022 (03:56 UTC), 22 km deep.

USGS: 22km ENE of Le Grand, CA

61 km (38 mi) NNW of Fresno, CA · 37 km (23 mi) N of Madera, CA

7:56 pm PST, Nov 22, 2022 · · 22 km deep · released about 47 lb of TNT

10 km30 km60 km120 km N Madera County 26 kmMariposa County 32 kmMerced County 63 kmFresno County 68 kmTuolumne County 81 kmStanislaus County 92 kmCalaveras County 110 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
7:56 pm PST on 22 November 2022 ()
Where
21 km (13 mi) east-northeast of Le Grand, CA · earthquakes near Le Grand
Magnitude
M 2.1 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Madera County, 26 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1450 days ago

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 Le Grand, 21 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: Mariposa, Yosemite Lakes, Planada, Ahwahnee, Coarsegold, Chowchilla.

How big was it?

This earthquake released about 47 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 37.2958, -120.0207. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Madera County, CA 26 km (16 mi) ESE earthquakes near Madera County
Mariposa County, CA 32 km (20 mi) NNE earthquakes near Mariposa County
Merced County, CA 63 km (39 mi) W earthquakes near Merced County
Fresno County, CA 68 km (42 mi) SSE earthquakes near Fresno County
Tuolumne County, CA 81 km (50 mi) N earthquakes near Tuolumne County
Stanislaus County, CA 92 km (57 mi) WNW earthquakes near Stanislaus County

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

Aftershocks so far

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

  1. 2.1 13 km SSW of Mariposa, CA
  2. 1.9 10 km SSW of Mariposa, CA
  3. 2.2 9 km SSW of Mariposa, CA
  4. 1.9 8 km NW of Friant, CA
  5. 2.3 18 km E of Le Grand, CA
  6. 2.5 13 km NW of Yosemite Lakes, CA
  7. 2.3 8 km WNW of Friant, CA
  8. 2.4 11 km SSW of Mariposa, CA
  9. 2.1 7 km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  10. 2.7 11 km W of Ahwahnee, CA
  11. 2.3 8 km ENE of Bonadelle Ranchos-Madera Ranchos, CA
  12. 2.2 5 km NW of Friant, CA
  13. 2.4 9 km SSW of Mariposa, CA
  14. 1.9 12 km W of Auberry, CA
  15. 1.9 7 km NNE of Friant, 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.