QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

7km E of North Fork, CA

· 25 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Madera County 28 kmFresno County 56 kmMariposa County 56 kmMono County 90 kmTuolumne County 99 kmMerced County 114 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 1.6 (md)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Madera County, 28 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1907 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 37.2363, -119.4373. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Madera County, CA 28 km (17 mi) E of here earthquakes near Madera County
Fresno County, CA 56 km (35 mi) NNE of here earthquakes near Fresno County
Mariposa County, CA 56 km (35 mi) SE of here earthquakes near Mariposa County
Mono County, CA 90 km (56 mi) SSW of here earthquakes near Mono County
Tuolumne County, CA 99 km (61 mi) SSE of here earthquakes near Tuolumne County
Merced County, CA 114 km (71 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

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

  1. 1.7 29km NE of Oakhurst, CA
  2. 2.3 29km NE of Oakhurst, CA
  3. 2.0 23km ESE of Yosemite Valley, CA
  4. 1.7 12km S of Bootjack, CA
  5. 2.1 20km S of Auberry, CA
  6. 2.3 6km SE of Shaver Lake, CA
  7. 1.5 Central California
  8. 1.9 18km SSW of Bootjack, CA
  9. 1.6 22km NE of North Fork, CA
  10. 2.2 29km NE of Oakhurst, CA
  11. 1.7 20km SE of Yosemite Valley, CA
  12. 2.2 5km SW of North Fork, CA
  13. 1.6 15km ESE of Yosemite Valley, CA
  14. 1.9 19km SE of Yosemite Valley, CA
  15. 1.6 21km 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.