Earthquake · reviewed by a seismologist
M 1.7ml
13km N of Castaic, CA
- When
- Magnitude
- M 1.7 (ml)
- Depth
- 8.0 km below the surface
- Felt
- no reports yet
- Nearest
- Ventura County, 53 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3807 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
How big was it?
This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
- Magna, Utah 2020 M 5.7 870,000× the energy of this one
- Around the size people start to feel M 3.0 78× the energy of this one
- This earthquake M 1.7 about 12 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.
Where
Epicentre 34.6070, -118.6448. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Ventura County, CA | 53 km (33 mi) | ENE of here | earthquakes near Ventura County |
| Los Angeles County, CA | 58 km (36 mi) | NW of here | earthquakes near Los Angeles County |
| Kern County, CA | 83 km (51 mi) | S of here | earthquakes near Kern County |
| Orange County, CA | 131 km (81 mi) | NW of here | earthquakes near Orange County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 2.4 14km N of Santa Paula, CA
- 1.7 4km S of Frazier Park, CA
- 2.2 13km NNE of Ojai, CA
- 1.8 14km N of Santa Paula, CA
- 1.9 2km E of Tarzana, CA
- 1.9 17km ENE of Grapevine, CA
- 1.6 20km SSE of Gorman, CA
- 2.7 10km SE of Gorman, CA
- 1.7 5km SW of Valencia, CA
- 1.8 16km NE of Ojai, CA
- 1.7 21km SSW of Tehachapi, CA
- 1.6 12km NE of Castaic, CA
- 1.6 13km WNW of Castaic, CA
- 2.7 8km W of Grapevine, CA
- 1.9 5km NNW of Oak Park, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 4.1 on 2016-03-12 — it released about 3,800 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.