Earthquake near Huron, 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 15 km (9 mi) from the epicentre. In Huron, 6 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: Huron 6 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 22 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 5.8 680,000× the energy of this one
2. Magna, Utah 2020 M 5.7 480,000× the energy of this one
3. Around the size people start to feel M 3.0 43× the energy of this one
4. This earthquake M 1.9 about 22 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 1,400 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 · 25 km W of this epicentre May 2, 1983
2. 6.4 1901 Parkfield, California Earthquake · 47 km WSW of this epicentre Mar 3, 1901
3. 5.6 8 km SW of Huron, California · 12 km WSW of this epicentre Aug 4, 1985
4. 5.5 11 km NNE of Coalinga, California · 23 km W of this epicentre May 2, 1983
5. 5.5 11 km NE of Coalinga, California · 22 km W of this epicentre Sep 9, 1983

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 36.1993, -120.0360. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 2.5 8km WSW of Corcoran, CA 15:55 UTC
2. 2.0 8km W of Corcoran, CA 06:41 UTC
3. 1.7 11km WSW of Huron, CA 08:31 UTC
4. 2.2 6km SSE of Riverdale, CA 03:41 UTC
5. 1.6 18km SSE of Kettleman City, CA 23:39 UTC
6. 3.6 11km WSW of Huron, CA 14:44 UTC
7. 1.6 25km S of Kettleman City, CA 08:29 UTC
8. 1.5 3km ENE of Coalinga, CA 14:56 UTC
9. 1.8 1km SW of Kettleman City, CA 15:38 UTC
10. 2.6 8km NE of Coalinga, CA 14:58 UTC
11. 2.5 2km N of Armona, CA 20:24 UTC
12. 1.7 13km NNW of Avenal, CA 22:31 UTC
13. 1.6 9km NW of Avenal, CA 19:43 UTC
14. 2.1 15km SSE of Cantua Creek, CA 05:50 UTC
15. 2.5 7km NW of Avenal, CA 21:16 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 11:35 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.