QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near Oakhurst, CA

No earthquake was likely felt in Oakhurst in the 24 hours to 3:51 am PST (11:51 UTC). The last one was M 5.7, 230 km (143 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 Oakhurst

This page: a magnitude 2.4 earthquake was recorded 21 km (13 mi) east-southeast of Oakhurst, CA, at 8:47 pm PDT on 14 May 2021 (03:47 UTC), 32 km deep.

USGS: 8km ENE of North Fork, CA

62 km (38 mi) NNE of Fresno, CA · 53 km (33 mi) NNE of Clovis, CA

8:47 pm PDT, May 14, 2021 · · 32 km deep · released about 120 lb of TNT

10 km30 km60 km120 km N Madera County 29 kmMariposa County 55 kmFresno County 58 kmMono County 88 kmTuolumne County 97 kmMerced County 115 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
8:47 pm PDT on 14 May 2021 ()
Where
21 km (13 mi) east-southeast of Oakhurst, CA · earthquakes near Oakhurst
Magnitude
M 2.4 (md)
Depth
32 km below the surface
Felt
no reports yet
Nearest
Madera County, 29 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2002 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 Oakhurst, 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: Auberry, Coarsegold, Ahwahnee.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 92,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.2× the energy of this one
  4. This earthquake M 2.4 about 120 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 37.2552, -119.4302. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Madera County, CA 29 km (18 mi) W earthquakes near Madera County
Mariposa County, CA 55 km (34 mi) NW earthquakes near Mariposa County
Fresno County, CA 58 km (36 mi) SSW earthquakes near Fresno County
Mono County, CA 88 km (55 mi) NNE earthquakes near Mono County
Tuolumne County, CA 97 km (60 mi) NNW earthquakes near Tuolumne County
Merced County, CA 115 km (71 mi) W earthquakes near Merced 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. 2.0 8km SE of Oakhurst, CA
  2. 1.5 27km S of Mammoth Lakes, CA
  3. 2.8 14km NNE of Shaver Lake, CA
  4. 2.1 6km NE of Bonadelle Ranchos-Madera Ranchos, CA
  5. 1.5 16km ESE of Yosemite Valley, CA
  6. 1.8 20km ESE of Yosemite Valley, CA
  7. 1.7 14km ESE of Yosemite Valley, CA
  8. 1.8 28km NE of Oakhurst, CA
  9. 1.5 27km W of Round Valley, CA
  10. 1.8 19km SE of Yosemite Valley, CA
  11. 1.5 19km SE of Yosemite Valley, CA
  12. 1.8 19km SE of Yosemite Valley, CA
  13. 2.2 20km SE of Yosemite Valley, CA
  14. 1.5 31km SSW of Mammoth Lakes, CA
  15. 1.5 14km SE of Yosemite Valley, 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.