QuakeIndex

quarry blast · reviewed by a seismologist

M 1.7ml

13km SE of Woodlake, CA

· -0.9 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tulare County 23 kmFresno County 76 kmKings County 79 kmKern County 113 kmMadera County 118 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 1.7 (ml)
Depth
-0.9 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Tulare County, 23 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2714 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 36.3382, -118.9933. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tulare County, CA 23 km (14 mi) WNW of here earthquakes near Tulare County
Fresno County, CA 76 km (47 mi) SE of here earthquakes near Fresno County
Kings County, CA 79 km (49 mi) ENE of here earthquakes near Kings County
Kern County, CA 113 km (70 mi) NNW of here earthquakes near Kern County
Madera County, CA 118 km (73 mi) SE of here earthquakes near Madera County

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

Aftershocks so far

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

  1. 2.7 1 km S of Orange Cove, CA
  2. 1.6 9 km SE of Porterville, CA
  3. 1.6 6 km SE of Poplar-Cotton Center, CA
  4. 1.9 10 km E of Porterville, CA
  5. 2.1 6 km ENE of Orange Cove, CA
  6. 1.7 10 km E of Porterville, CA
  7. 1.6 9 km SE of Porterville, CA
  8. 2.0 4 km E of Pixley, CA
  9. 1.7 8 km NNE of Porterville, CA
  10. 1.6 15 km ESE of Porterville, CA
  11. 1.8 13 km E of Porterville, CA
  12. 2.5 29 km ENE of Porterville, CA
  13. 2.1 1 km SE of Orosi, CA
  14. 2.0 7 km ESE of Orange Cove, CA
  15. 1.7 10 km ESE of Three Rivers, 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.