QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near Kettleman City, CA

No earthquake was likely felt in Kettleman City in the 24 hours to 9:32 am PST (17:32 UTC). The last one was M 2.0, 13 km (8 mi) S, at 5:43 pm PST on 3 November 2026, estimated intensity II (weak) in town. Every earthquake near Kettleman City

This page: a magnitude 2.4 earthquake was recorded 13 km (8 mi) east-southeast of Kettleman City, CA, at 11:49 pm PDT on 18 October 2021 (06:49 UTC), 5.1 km deep. 1 person has reported feeling it to USGS.

USGS: 13km ESE of Kettleman City, CA

92 km (57 mi) S of Fresno, CA · 44 km (27 mi) SSW of Hanford, CA

11:49 pm PDT, Oct 18, 2021 · · 5.1 km deep · released about 100 lb of TNT

Every earthquake near Kettleman City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 13 kmSan Luis Obispo County 84 kmFresno County 91 kmTulare County 99 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
11:49 pm PDT on 18 October 2021 ()
Where
13 km (8 mi) east-southeast of Kettleman City, CA · earthquakes near Kettleman City
Magnitude
M 2.4 (md)
Depth
5.1 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Kings County, 13 km N
Nearest mapped fault
Great Valley thrust fault system, 10 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 1847 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 20 km (12 mi) from the epicentre. In Kettleman City, 13 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Kettleman City 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 100,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.1× the energy of this one
  4. This earthquake M 2.4 about 100 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

The largest earthquake within 50 km since 2016 was M 4.0 on 2018-11-27 — about 290 times the energy of this one.

Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:

  1. 6.5 1922 Parkfield, California Earthquake · 44 km WSW of this epicentre
  2. 5.6 8 km SW of Huron, California · 36 km NW of this epicentre
  3. 5.5 1966 Parkfield, California Earthquake · 46 km WSW of this epicentre
  4. 5.5 11 km NE of Coalinga, California · 50 km NW of this epicentre
  5. 5.0 4 km NE of Coalinga, California · 50 km WNW 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 35.9585, -119.8332. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kings County, CA 13 km (8 mi) N earthquakes near Kings County
San Luis Obispo County, CA 84 km (52 mi) SW earthquakes near San Luis Obispo County
Fresno County, CA 91 km (56 mi) N earthquakes near Fresno County
Tulare County, CA 99 km (62 mi) ENE earthquakes near Tulare County
Kern County, CA 121 km (75 mi) SE earthquakes near Kern County
San Benito County, CA 134 km (83 mi) WNW earthquakes near San Benito County

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

Aftershocks so far

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

  1. 2.6 6km ENE of Avenal, CA
  2. 1.6 5km ENE of Avenal, CA
  3. 2.8 10km NNW of Cholame, CA
  4. 2.3 9km SW of Corcoran, CA
  5. 1.6 9km NNW of Avenal, CA
  6. 2.6 7km WSW of Avenal, CA
  7. 1.6 5km W of Avenal, CA
  8. 2.4 7km WSW of Avenal, CA
  9. 2.3 7km WSW of Avenal, CA
  10. 1.5 9km NNW of Avenal, CA
  11. 1.5 9km NNW of Avenal, CA
  12. 2.2 9km NNW of Avenal, CA
  13. 1.7 8km N of Kettleman City, CA
  14. 1.6 9km NW of Avenal, CA
  15. 2.0 12km ENE of Coalinga, 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.