QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7ml

20 km NE of Maricopa, CA

· 18 km deep · released about 5.2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 50 kmVentura County 91 kmSanta Barbara County 102 kmKings County 113 kmSan Luis Obispo County 113 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 3.7 (ml)
Depth
18 km below the surface
Felt
305 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
Nearest
Kern County, 50 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 298 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 305 people have reported feeling it to USGS.

How big was it?

This earthquake released about 5.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 33,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,000× the energy of this one
  4. This earthquake M 3.7 about 5.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 11× more

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 35.1762, -119.2337. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 50 km (31 mi) WSW of here earthquakes near Kern County
Ventura County, CA 91 km (57 mi) N of here earthquakes near Ventura County
Santa Barbara County, CA 102 km (64 mi) NE of here earthquakes near Santa Barbara County
Kings County, CA 113 km (70 mi) SSE of here earthquakes near Kings County
San Luis Obispo County, CA 113 km (70 mi) ESE of here earthquakes near San Luis Obispo County
Tulare County, CA 124 km (77 mi) SSW of here earthquakes near Tulare County

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

Aftershocks so far

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

  1. 1.6 19 km NW of Grapevine, CA
  2. 1.7 19 km WSW of Lamont, CA
  3. 3.0 22 km NW of Grapevine, CA
  4. 1.9 8 km NNE of Lebec, CA
  5. 3.2 24 km SW of Maricopa, CA
  6. 1.8 18 km SE of Buttonwillow, CA
  7. 2.1 16 km WNW of Grapevine, CA
  8. 1.5 3 km WNW of Frazier Park, CA
  9. 2.4 2 km WNW of Frazier Park, CA
  10. 1.8 2 km NNE of Frazier Park, CA
  11. 1.5 19 km WSW of Lamont, CA
  12. 1.6 16 km SE of Maricopa, CA
  13. 1.7 18 km S of Maricopa, CA
  14. 2.7 9 km WSW of Grapevine, CA
  15. 2.1 10 km NNW of Grapevine, 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 5.2 on 2024-08-07 — it released about 200 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.