Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Piru, CA
USGS: 3 km SSE of Piru, CA
14 km (9 mi) NNW of Simi Valley, CA · 53 km (33 mi) NW of Los Angeles, CA
- When
- 3:03 am PDT on 30 September 2026 ()
- Where
- 3 km (2 mi) SSE of Piru, CA · earthquakes near Piru
- Magnitude
- M 1.6 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Ventura County, 33 km W
- Nearest mapped fault
- Oak Ridge fault, under 1 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3 days ago
A magnitude 1.6 earthquake was recorded 3 km (2 mi) SSE of Piru, CA, at 3:03 am PDT on 30 September 2026 (10:03 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
Earthquakes near other towns within 30 km: Val Verde, Fillmore, Simi Valley, Moorpark, Valencia, Castaic.
How big was it?
This earthquake released about 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
- Around the size people start to feel M 3.0 110× the energy of this one
- This earthquake M 1.6 about 8.7 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 140,000 times the energy of this one.
Before 2016, the USGS record lists 17 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 30 km SE of this epicentre
- 6.6 1971 San Fernando Earthquake, California · 38 km E of this epicentre
- 5.9 1km ENE of Granada Hills, California · 29 km ESE of this epicentre
- 5.8 10km SSW of Agua Dulce, CA · 38 km E of this epicentre
- 5.8 10km SSW of Agua Dulce, CA · 38 km E of this epicentre
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 34.3900, -118.7792. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Ventura County, CA | 33 km (20 mi) | W | earthquakes near Ventura County |
| Los Angeles County, CA | 52 km (32 mi) | ESE | earthquakes near Los Angeles County |
| Kern County, CA | 106 km (66 mi) | N | earthquakes near Kern County |
| Santa Barbara County, CA | 117 km (72 mi) | W | earthquakes near Santa Barbara County |
| Orange County, CA | 122 km (76 mi) | SE | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
2 earthquakes have been recorded within 50 km since this one.
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . 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.
| What changed | From | To | When |
|---|---|---|---|
| review status | automatic | reviewed | |
| longitude | -118.78 | -118.78 | |
| latitude | 34.39 | 34.39 | |
| depth | 6.41 | 10.29 | |
| magnitude | 1.62 | 1.64 | |
| location | 3 km S of Piru, CA | 3 km SSE of Piru, CA | |
| longitude | -118.79 | -118.78 | |
| latitude | 34.39 | 34.39 | |
| depth | 7.73 | 6.41 | |
| magnitude | 1.74 | 1.62 |
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.