Earthquake near Pine Mountain Club, 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 Pine Mountain Club, 12 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: Frazier Park 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 94 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 160,000× the energy of this one
2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
3. Around the size people start to feel M 3.0 10× the energy of this one
4. This earthquake M 2.3 about 94 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 4.1 on 2016-03-12 — about 500 times the energy of this one.

Before 2016, the USGS record lists 19 earthquakes of M5 or more within 50 km; the five largest:

1. 7.5 The 1952 Kern County, California Earthquake · 7 km NE of this epicentre Jul 21, 1952
2. 6.0 Tejon Pass, California · 13 km E of this epicentre Oct 23, 1916
3. 5.8 Near Bakersfield, California · 49 km NNE of this epicentre Dec 23, 1905
4. 5.8 13km WNW of Grapevine, CA · 8 km NNW of this epicentre Jul 21, 1952
5. 5.5 Southwest of Tejon Pass, California · 23 km S of this epicentre Oct 23, 1916

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 34.9055, -119.0420. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 2.0 13km NNW of Piru, CA 23:38 UTC
2. 2.8 16km NNW of Grapevine, CA 17:43 UTC
3. 2.0 15km NW of Grapevine, CA 19:45 UTC
4. 1.7 7km NW of Pine Mountain Club, CA 14:56 UTC
5. 1.8 25km ENE of Maricopa, CA 01:36 UTC
6. 1.6 17km S of Maricopa, CA 03:18 UTC
7. 1.5 15km WNW of Grapevine, CA 00:34 UTC
8. 1.7 24km ENE of Maricopa, CA 20:57 UTC
9. 1.9 14km WNW of Pine Mountain Club, CA 18:49 UTC
10. 2.7 12km NE of Ojai, CA 15:18 UTC
11. 1.6 17km ESE of Arvin, CA 00:27 UTC
12. 1.9 17km N of Pine Mountain Club, CA 13:21 UTC
13. 3.0 5km WNW of Arvin, CA 04:12 UTC
14. 2.1 18km NNW of Neenach, CA 10:04 UTC
15. 1.6 10km E of Taft, CA 20:45 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 13:07 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.