QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

7km N of North Fork, CA

· 37 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Madera County 23 kmMariposa County 47 kmFresno County 61 kmMono County 89 kmTuolumne County 90 kmMerced County 108 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
Magnitude
M 1.9 (md)
Depth
37 km below the surface
Felt
no reports yet
Nearest
Madera County, 23 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2330 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 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.

Where

Epicentre 37.2952, -119.5085. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Madera County, CA 23 km (15 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 47 km (29 mi) SE of here earthquakes near Mariposa County
Fresno County, CA 61 km (38 mi) NNE of here earthquakes near Fresno County
Mono County, CA 89 km (55 mi) SW of here earthquakes near Mono County
Tuolumne County, CA 90 km (56 mi) SSE of here earthquakes near Tuolumne County
Merced County, CA 108 km (67 mi) E of here earthquakes near Merced County

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

Aftershocks so far

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

  1. 1.6 4km WSW of Auberry, CA
  2. 1.6 20km ESE of Yosemite Valley, CA
  3. 1.8 3 km NNW of Shaver Lake, California
  4. 1.8 2km NNW of Coarsegold, CA
  5. 1.5 33km NE of Shaver Lake, CA
  6. 1.7 26km NNE of Shaver Lake, CA
  7. 1.5 20km ESE of Yosemite Valley, CA
  8. 2.0 15km SSW of Bootjack, CA
  9. 2.1 2km SW of Shaver Lake, CA
  10. 1.8 20km ESE of Yosemite Valley, CA
  11. 1.5 11km NNE of North Fork, CA
  12. 2.4 3km ENE of Bootjack, CA
  13. 2.1 17km WSW of Mammoth Lakes, CA
  14. 2.2 17km WSW of Mammoth Lakes, CA
  15. 1.5 22km ESE 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.