Earthquake · reviewed by a seismologist
M 3.1ml
Earthquake near Fillmore, CA
No earthquake was likely felt in Fillmore in the 24 hours to 4:38 am PST (12:38 UTC). The last one was M 3.8, 14 km (9 mi) E, at 8:00 pm PDT on 29 September 2026, estimated intensity III (weak) in town; 199 felt reports to USGS. Every earthquake near Fillmore
This page: a magnitude 3.1 earthquake was recorded 13 km (8 mi) northwest of Fillmore, CA, at 10:27 am PST on 11 December 2025 (18:27 UTC), 11 km deep. 30 people have reported feeling it to USGS.
USGS: 13 km NW of Fillmore, CA
76 km (47 mi) NW of Los Angeles, CA · 30 km (18 mi) N of Camarillo, CA
- When
- 10:27 am PST on 11 December 2025 ()
- Where
- 13 km (8 mi) northwest of Fillmore, CA · earthquakes near Fillmore
- Magnitude
- M 3.1 (ml)
- Depth
- 11 km below the surface
- Felt
- 30 reports · strongest reported intensity IV
- Measured shaking
- intensity III (ShakeMap)
- Nearest
- Ventura County, 18 km SW
- Nearest mapped fault
- Santa Ynez fault, 7 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 133 days ago
Earthquake alerts for Fillmore, 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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 41 km (25 mi) from the epicentre. In Fillmore, 13 km away, the estimate is intensity III (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: Santa Paula 15 km, intensity III · Ojai 21 km, intensity II · Piru 22 km, intensity II · Moorpark 26 km, intensity II · Camarillo 30 km, intensity II · Simi Valley 33 km, intensity II · Ventura 34 km, intensity II · Oxnard 35 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1,400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 230,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
- Magna, Utah 2020 M 5.7 7,400× the energy of this one
- This earthquake M 3.1 about 1,400 lb of TNT
- Around the size people start to feel M 3.0 this one released 1.5× more
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 870 times the energy of this one.
Before 2016, the USGS record lists 13 earthquakes of M5 or more within 50 km; the five largest:
- 6.0 Tejon Pass, California · 47 km NNE of this epicentre
- 5.6 7km NNE of Simi Valley, California · 34 km ESE of this epicentre
- 5.5 Southwest of Tejon Pass, California · 24 km N of this epicentre
- 5.5 10 km NE of Toro Canyon, California · 44 km W of this epicentre
- 5.2 9km N of Chatsworth, California · 41 km ESE 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 34.4878, -119.0178. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Ventura County, CA | 18 km (11 mi) | SW | earthquakes near Ventura County |
| Los Angeles County, CA | 77 km (48 mi) | ESE | earthquakes near Los Angeles County |
| Santa Barbara County, CA | 94 km (58 mi) | W | earthquakes near Santa Barbara County |
| Kern County, CA | 99 km (62 mi) | NNE | earthquakes near Kern County |
| Orange County, CA | 146 km (90 mi) | SE | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.8 5 km NW of Frazier Park, CA
- 2.2 18 km NNW of Fillmore, CA
- 2.0 23 km SSW of Frazier Park, CA
- 2.1 5 km NNE of Castaic, CA
- 2.4 8 km W of Frazier Park, CA
- 2.3 7 km S of Carpinteria, CA
- 1.6 10 km SSW of Valencia, CA
- 2.5 10 km SSW of Valencia, CA
- 2.6 10 km SSW of Valencia, CA
- 1.8 11 km S of Carpinteria, CA
- 1.7 7 km S of Ojai, CA
- 1.8 6 km SSW of Ojai, CA
- 2.5 10 km SSW of Valencia, CA
- 1.8 9 km SSW of Ojai, CA
- 1.7 14 km NW of Fillmore, 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.