Earthquake · automatic estimate, may change
M 1.7ml
24km W of Johannesburg, CA
- When
- Magnitude
- M 1.7 (ml)
- Depth
- 8.4 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Kern County, 76 km W
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2634 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.
How big was it?
This earthquake released about 9.3 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 1,600,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 100× the energy of this one
- This earthquake M 1.7 about 9.3 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 35.3513, -117.8967. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Kern County, CA | 76 km (47 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 | 158 km (98 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
24 earthquakes have been recorded within 50 km since this one.
- 2.5 12km ENE of Ridgecrest, CA
- 1.8 23km NNE of California City, CA
- 1.9 14km ENE of Ridgecrest, CA
- 1.9 15km SSW of Searles Valley, CA
- 1.8 26km NE of Johannesburg, CA
- 1.6 7km ESE of Ridgecrest, CA
- 2.1 23km W of Johannesburg, CA
- 1.6 15km ENE of Ridgecrest, CA
- 2.2 17km ESE of Ridgecrest, CA
- 1.6 18km SSW of Searles Valley, CA
- 1.6 12km ENE of Ridgecrest, CA
- 2.4 14km ENE of Ridgecrest, CA
- 2.3 12km ENE of Ridgecrest, CA
- 1.8 4km NNE of Ridgecrest, CA
- 2.8 13km ENE of Ridgecrest, 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 72,000 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.