Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Ventura, CA
No earthquake was likely felt in Ventura in the 24 hours to 8:07 am PST (16:07 UTC). The last one was M 3.8, 50 km (31 mi) ENE, at 8:00 pm PDT on 29 September 2026, estimated intensity II (weak) in town; 199 felt reports to USGS. Every earthquake near Ventura
This page: a magnitude 1.5 earthquake was recorded 9 km (6 mi) northeast of Ventura, CA, at 12:15 pm PDT on 12 October 2017 (19:15 UTC), 7.5 km deep.
USGS: 7km N of Ventura, CA
8 km (5 mi) NNE of San Buenaventura (Ventura), CA · 82 km (51 mi) WNW of Los Angeles, CA
- When
- 12:15 pm PDT on 12 October 2017 ()
- Where
- 9 km (6 mi) northeast of Ventura, CA · earthquakes near Ventura
- Magnitude
- M 1.5 (ml)
- Depth
- 7.5 km below the surface
- Felt
- no reports yet
- Nearest
- Ventura County, 8 km ENE
- Nearest mapped fault
- Ventura fault, 6 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 3304 days ago
Earthquake alerts for Ventura, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 7 km (4 mi) from the epicentre. In Ventura, 9 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: Saticoy, Oak View, El Rio, Mira Monte, Ojai, Meiners Oaks.
How big was it?
This earthquake released about 6.2 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.
- Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
- Around the size people start to feel M 3.0 150× the energy of this one
- This earthquake M 1.5 about 6.2 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 7,700 times the energy of this one.
Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:
- 5.6 7km NNE of Simi Valley, California · 47 km E of this epicentre
- 5.5 Southwest of Tejon Pass, California · 45 km NNE of this epicentre
- 5.5 30 km SW of Channel Islands Beach, California · 45 km SW of this epicentre
- 5.5 10 km NE of Toro Canyon, California · 32 km NW of this epicentre
- 5.5 The 1941 Santa Barbara, California Earthquake · 32 km W 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 34.3340, -119.2152. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Ventura County, CA | 8 km (5 mi) | ENE | earthquakes near Ventura County |
| Santa Barbara County, CA | 79 km (49 mi) | WNW | earthquakes near Santa Barbara County |
| Los Angeles County, CA | 89 km (55 mi) | E | earthquakes near Los Angeles County |
| Kern County, CA | 121 km (75 mi) | NNE | earthquakes near Kern County |
| San Luis Obispo County, CA | 163 km (101 mi) | NW | earthquakes near San Luis Obispo County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
48 earthquakes have been recorded within 50 km since this one.
- 1.7 14km SSE of Santa Barbara, CA
- 2.0 7km S of Montecito, CA
- 2.5 9km WNW of Malibu, CA
- 2.6 21km S of Port Hueneme, CA
- 1.6 8km ESE of Carpinteria, CA
- 2.1 20km WSW of Ventura, CA
- 1.8 14km SSE of Santa Barbara, CA
- 1.8 15km SSE of Santa Barbara, CA
- 2.1 9km WNW of Malibu, CA
- 1.5 2km ENE of Simi Valley, CA
- 2.4 15km WNW of Malibu, CA
- 1.7 11km N of Piru, CA
- 2.3 21km NNW of Santa Cruz Is. (E end), CA
- 2.0 14km SW of Port Hueneme, CA
- 1.7 6km ESE of Port Hueneme, CA
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.
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.