QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

13km SW of Alpaugh, CA

· 23 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 38 kmTulare County 86 kmKern County 91 kmSan Luis Obispo County 91 kmFresno 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 1.8 (ml)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Kings County, 38 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2253 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 35.7933, -119.5688. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 38 km (24 mi) SE of here earthquakes near Kings County
Tulare County, CA 86 km (53 mi) SW of here earthquakes near Tulare County
Kern County, CA 91 km (56 mi) WNW of here earthquakes near Kern County
San Luis Obispo County, CA 91 km (57 mi) ENE of here earthquakes near San Luis Obispo County
Fresno County, CA 108 km (67 mi) S of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.6 0km ENE of Kettleman City, CA
  2. 1.7 13km ESE of Kettleman City, CA
  3. 1.9 12km ESE of Kettleman City, CA
  4. 1.7 20km ESE of Kettleman City, CA
  5. 2.4 13km ESE of Kettleman City, CA
  6. 2.3 13km ESE of Kettleman City, CA
  7. 2.9 9km SE of Kettleman City, CA
  8. 1.5 10km SE of Avenal, CA
  9. 1.6 6km WSW of Kettleman City, CA
  10. 2.0 12km S of Home Garden, CA
  11. 2.1 10km SSW of Stratford, CA
  12. 1.6 9km SSE of Alpaugh, CA
  13. 1.8 10km SE of Home Garden, CA
  14. 2.4 9km WSW of Corcoran, CA
  15. 2.3 8km WSW of Corcoran, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.9 on 2016-02-24 — it released about 40,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.