16km NNE of Coso Junction, 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 22 km (14 mi) from the epicentre. 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.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 78,000× the energy of this one
2. Magna, Utah 2020 M 5.7 55,000× the energy of this one
3. Around the size people start to feel M 3.0 4.9× the energy of this one
4. This earthquake M 2.5 about 190 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 5.5 on 2019-07-06 — about 28,000 times the energy of this one.

Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:

1. 5.4 17km N of Ridgecrest, California · 49 km SSE of this epicentre Aug 17, 1995
2. 5.3 27km E of Coso Junction, California · 24 km ESE of this epicentre Nov 27, 1996
3. 5.2 15km NNE of Inyokern, CA · 45 km SSE of this epicentre Mar 18, 1946
4. 5.2 28km E of Coso Junction, California · 25 km ESE of this epicentre Mar 6, 1998
5. 5.2 7km ESE of Coso Junction, CA · 18 km S of this epicentre Jul 17, 2001

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 36.1757, -117.8838. Map © OpenStreetMap contributors.

Nearby places

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. 2.0 8km ENE of Coso Junction, CA 18:59 UTC
2. 3.1 8km ENE of Coso Junction, CA 18:27 UTC
3. 2.7 9km NE of Coso Junction, CA 16:20 UTC
4. 2.2 9km NE of Coso Junction, CA 16:08 UTC
5. 2.5 9km NE of Coso Junction, CA 16:08 UTC
6. 2.3 9km ENE of Coso Junction, CA 16:04 UTC
7. 1.8 9km ENE of Coso Junction, CA 15:51 UTC
8. 1.5 21km E of Little Lake, CA 15:33 UTC
9. 1.6 10km ENE of Coso Junction, CA 13:25 UTC
10. 2.2 9km ENE of Coso Junction, CA 13:22 UTC
11. 1.8 10km NE of Coso Junction, CA 10:09 UTC
12. 2.2 20km E of Little Lake, CA 08:25 UTC
13. 2.6 20km E of Little Lake, CA 08:23 UTC
14. 1.9 10km ENE of Coso Junction, CA 07:44 UTC
15. 3.3 9km ENE of Coso Junction, CA 07:42 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 13:56 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.