QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near Kettleman City, CA

USGS: 24 km S of Kettleman City, California

59 km (36 mi) W of Delano, CA · 111 km (69 mi) S of Fresno, CA

10:59 pm PST, Dec 23, 2016 · · 11 km deep · released about 19 lb of TNT

10 km30 km60 km120 km N Kings County 33 kmSan Luis Obispo County 66 kmFresno County 111 kmTulare County 113 kmKern 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
10:59 pm PST on 23 December 2016 ()
Where
25 km (15 mi) S of Kettleman City, CA · earthquakes near Kettleman City
Magnitude
M 1.9 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Kings County, 33 km NNE
Nearest mapped fault
Great Valley thrust fault system, 24 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3521 days ago

A magnitude 1.9 earthquake was recorded 25 km (15 mi) S of Kettleman City, CA, at 10:59 pm PST on 23 December 2016 (06:59 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Lost Hills.

How big was it?

This earthquake released about 19 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 5.8 810,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 580,000× the energy of this one
  3. Around the size people start to feel M 3.0 51× the energy of this one
  4. This earthquake M 1.9 about 19 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.5 1922 Parkfield, California Earthquake · 31 km W of this epicentre
  2. 6.0 2004 Parkfield, California Earthquake · 41 km W of this epicentre
  3. 5.6 8 km SW of Huron, California · 45 km NNW of this epicentre
  4. 5.5 1966 Parkfield, California Earthquake · 34 km W of this epicentre
  5. 5.0 11 km NNE of Shandon, California · 38 km W of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 35.7877, -119.9127. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kings County, CA 33 km (20 mi) NNE earthquakes near Kings County
San Luis Obispo County, CA 66 km (41 mi) SW earthquakes near San Luis Obispo County
Fresno County, CA 111 km (69 mi) NNE earthquakes near Fresno County
Tulare County, CA 113 km (70 mi) ENE earthquakes near Tulare County
Kern County, CA 118 km (73 mi) ESE earthquakes near Kern County
San Benito County, CA 140 km (87 mi) NW earthquakes near San Benito 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. 1.5 12 km NW of Avenal, California
  2. 1.5 11 km NW of Avenal, California
  3. 2.5 12 km NW of Avenal, California
  4. 2.8 12 km NW of Avenal, California
  5. 1.6 12 km NW of Avenal, California
  6. 1.5 12 km NW of Avenal, California
  7. 1.5 12 km ESE of Coalinga, California
  8. 1.6 12 km SW of Huron, California
  9. 2.6 12 km NW of Avenal, California
  10. 3.3 13 km NW of Avenal, California
  11. 1.5 13 km SSW of Kettleman City, California
  12. 2.3 15 km SSE of Avenal, California
  13. 1.9 15 km SSE of Avenal, California
  14. 1.8 Central California
  15. 1.9 15 km SSE of Avenal, California

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.