Earthquake near Kettleman City, CA

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 12 km (7 mi) from the epicentre. In Kettleman City, 20 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.

Earthquakes near other towns within 30 km: Avenal.

How big was it?

This earthquake released about 13 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 1,200,000× the energy of this one
2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
3. Around the size people start to feel M 3.0 75× the energy of this one
4. This earthquake M 1.8 about 13 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 4.3 on 2019-12-17 — about 6,500 times the energy of this one.

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 · 37 km WSW of this epicentre Mar 10, 1922
2. 6.0 2004 Parkfield, California Earthquake · 46 km W of this epicentre Sep 28, 2004
3. 5.6 8 km SW of Huron, California · 42 km NW of this epicentre Aug 4, 1985
4. 5.5 1966 Parkfield, California Earthquake · 40 km W of this epicentre Jun 28, 1966
5. 5.0 11 km NNE of Shandon, California · 44 km WSW of this epicentre Mar 16, 1922

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 35.8520, -119.8585. 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. 2.5 10km ESE of Coalinga, CA 10:08 UTC
2. 2.0 10km ESE of Shandon, CA 04:47 UTC
3. 2.2 8km NW of Avenal, CA 11:53 UTC
4. 2.0 11km NNW of Cholame, CA 07:24 UTC
5. 2.0 8km SW of Kettleman City, CA 21:32 UTC
6. 1.7 8km SSW of Kettleman City, CA 21:15 UTC
7. 2.8 8km SSW of Kettleman City, CA 21:14 UTC
8. 1.8 10km SW of Huron, CA 03:48 UTC
9. 2.0 9km E of Kettleman City, CA 11:03 UTC
10. 1.8 24km NNW of Simmler, CA 05:01 UTC
11. 2.2 10km SSE of Kettleman City, CA 02:31 UTC
12. 2.5 6km S of Armona, CA 16:16 UTC
13. 1.7 30km NW of Buttonwillow, CA 10:15 UTC
14. 1.6 28km NW of Buttonwillow, CA 12:14 UTC
15. 1.8 30km WNW of Buttonwillow, CA 12:04 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 21:40 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.