Earthquake near Fillmore, 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 9 km (6 mi) from the epicentre. In Fillmore, 4 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: Santa Paula, Piru, Moorpark, Saticoy, Simi Valley, Camarillo.

How big was it?

This earthquake released about 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
3. Around the size people start to feel M 3.0 160× the energy of this one
4. This earthquake M 1.5 about 5.9 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 4.2 on 2020-07-30 — about 9,100 times the energy of this one.

Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:

1. 6.7 Northridge, California, earthquake · 45 km ESE of this epicentre Jan 17, 1994
2. 5.9 1km ENE of Granada Hills, California · 46 km ESE of this epicentre Jan 17, 1994
3. 5.6 7km NNE of Simi Valley, California · 26 km ESE of this epicentre Jan 17, 1994
4. 5.5 Southwest of Tejon Pass, California · 32 km N of this epicentre Oct 23, 1916
5. 5.3 The 1973 Point Mugu, California Earthquake · 49 km S of this epicentre Feb 21, 1973

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 34.4163, -118.9615. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 2.1 3km SE of Frazier Park, CA 18:16 UTC
2. 2.3 4km NW of Frazier Park, CA 12:29 UTC
3. 1.5 6km ESE of Moorpark, CA 15:21 UTC
4. 1.5 21km N of Fillmore, CA 16:21 UTC
5. 2.2 6km WNW of Malibu Beach, CA 12:47 UTC
6. 1.7 14km SSE of Port Hueneme, CA 08:25 UTC
7. 2.6 5km W of Malibu, CA 23:19 UTC
8. 1.6 12km ESE of Carpinteria, CA 09:46 UTC
9. 1.6 2km SW of Sylmar, CA 22:02 UTC
10. 3.6 15km SSE of Port Hueneme, CA 20:24 UTC
11. 2.2 5km NNW of Sylmar, CA 17:47 UTC
12. 1.5 18km NNE of Ojai, CA 05:13 UTC
13. 1.7 11km WSW of Ojai, CA 07:22 UTC
14. 1.6 8km N of Carpinteria, CA 11:32 UTC
15. 1.9 7km NNE of Carpinteria, CA 11:30 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 18:20 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.