Earthquake near Kettleman City, CA

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 44 km (27 mi) from the epicentre. In Kettleman City, 6 km away, the estimate is intensity III (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 6 km, intensity III · Avenal 18 km, intensity III · Huron 31 km, intensity II · Corcoran 38 km, intensity II · Lemoore 41 km, intensity II · Coalinga 43 km, intensity II · Lost Hills 44 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 200,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 8,800× the energy of this one
3. Magna, Utah 2020 M 5.7 6,200× the energy of this one
4. This earthquake M 3.2 about 1,700 lb of TNT
5. Around the size people start to feel M 3.0 this one released 1.8× 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.0 on 2018-11-27 — about 18 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

1. 6.7 The 1983 Coalinga, California Earthquake · 46 km NW of this epicentre May 2, 1983
2. 6.5 1922 Parkfield, California Earthquake · 36 km SW of this epicentre Mar 10, 1922
3. 6.0 2004 Parkfield, California Earthquake · 41 km WSW of this epicentre Sep 28, 2004
4. 5.6 8 km SW of Huron, California · 29 km NW of this epicentre Aug 4, 1985
5. 5.5 1966 Parkfield, California Earthquake · 37 km WSW of this epicentre Jun 28, 1966

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 35.9547, -119.9395. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 2.2 12km SSE of Huron, CA 02:42 UTC
2. 2.4 8km SE of Home Garden, CA 06:48 UTC
3. 1.5 3km N of Cholame, CA 13:02 UTC
4. 1.7 7km E of Coalinga, CA 13:12 UTC
5. 1.6 13km NW of Avenal, CA 07:59 UTC
6. 2.4 6km SE of Kettleman City, CA 10:48 UTC
7. 2.2 6km SE of Parkfield, CA 23:47 UTC
8. 2.9 6km SE of Parkfield, CA 23:46 UTC
9. 1.8 12km S of Kettleman City, CA 12:26 UTC
10. 1.5 0km WNW of Avenal, CA 15:53 UTC
11. 1.5 11km SW of Huron, CA 11:51 UTC
12. 1.9 13km ESE of Kettleman City, CA 07:25 UTC
13. 2.1 7km ESE of Huron, CA 08:58 UTC
14. 1.7 11km WSW of Huron, CA 15:30 UTC
15. 1.8 12km SW of Huron, CA 15:28 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 22:20 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

• The official USGS event page — the source of record for every value above
• Did you feel it? Report it to USGS — reports go to USGS, not to us
• ShakeMap for this event, when USGS has produced one

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