Earthquake near Piru, CA

A magnitude 1.2 earthquake was recorded 15 km (9 mi) NNW of Piru, CA, at 11:40 pm PDT on 29 September 2026 (06:40 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Fillmore, Val Verde, Castaic, Valencia, Moorpark, Santa Paula.

How big was it?

This earthquake released about 1.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.2 would have released about 32 times as much.

1. Mineral, Virginia 2011 M 5.8 8,800,000× the energy of this one
2. Magna, Utah 2020 M 5.7 6,200,000× the energy of this one
3. Around the size people start to feel M 3.0 560× the energy of this one
4. This earthquake M 1.2 about 1.7 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 5.1 on 2023-08-20 — about 730,000 times the energy of this one.

Before 2016, the USGS record lists 22 earthquakes of M5 or more within 50 km; the five largest:

1. 7.5 The 1952 Kern County, California Earthquake · 48 km NNW of this epicentre Jul 21, 1952
2. 6.7 Northridge, California, earthquake · 46 km SE of this epicentre Jan 17, 1994
3. 6.6 1971 San Fernando Earthquake, California · 45 km ESE of this epicentre Feb 9, 1971
4. 6.0 Tejon Pass, California · 40 km N of this epicentre Oct 23, 1916
5. 5.9 1km ENE of Granada Hills, California · 44 km SE of this epicentre Jan 17, 1994

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 34.5440, -118.8400. Map © OpenStreetMap contributors.

Nearby places

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

Aftershocks so far

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

1. 1.8 3 km SE of Piru, CA 00:28 UTC
2. 1.3 5 km ENE of Simi Valley, CA 23:31 UTC
3. 1.6 3 km SSE of Piru, CA 10:03 UTC
4. 1.2 15 km NNW of Piru, CA 08:39 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 01:37 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

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.