Earthquake · reviewed by a seismologist
M 1.5ml
25km W of Johannesburg, CA
- When
- Magnitude
- M 1.5 (ml)
- Depth
- 9.6 km below the surface
- Felt
- no reports yet
- Nearest
- Kern County, 74 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2291 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 5.7 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 2,600,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
- Around the size people start to feel M 3.0 170× the energy of this one
- This earthquake M 1.5 about 5.7 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.
Where
Epicentre 35.3478, -117.9112. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Kern County, CA | 74 km (46 mi) | E of here | earthquakes near Kern County |
| Tulare County, CA | 126 km (78 mi) | SE of here | earthquakes near Tulare County |
| Ventura County, CA | 157 km (97 mi) | NE of here | earthquakes near Ventura County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
15 earthquakes have been recorded within 50 km since this one.
- 1.9 5km NNW of Boron, CA
- 1.9 13km SE of Bodfish, CA
- 1.5 5km NW of Boron, CA
- 2.1 12km ENE of Ridgecrest, CA
- 1.6 21km W of Johannesburg, CA
- 1.7 12km SE of Bodfish, CA
- 2.3 11km ENE of Ridgecrest, CA
- 1.6 20km ESE of Ridgecrest, CA
- 2.0 4km NNW of Boron, CA
- 1.9 13km ENE of Ridgecrest, CA
- 1.6 17 km E of Ridgecrest, CA
- 1.8 13km ENE of Ridgecrest, CA
- 1.7 12 km ENE of Ridgecrest, CA
- 2.0 5km NW of Boron, CA
- 2.0 12km SE of Bodfish, 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 4.9 on 2019-07-12 — it released about 120,000 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.