Earthquake · reviewed by a seismologist
M 1.8ml
22 km NW of Sun Valley, Idaho
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 5.6 km below the surface
- Felt
- no reports yet
- Nearest
- Camas County, 39 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1593 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 710,000× the energy of this one
- Around the size people start to feel M 3.0 63× the energy of this one
- This earthquake M 1.8 about 15 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 43.8243, -114.5707. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Camas County, ID | 39 km (24 mi) | NNE of here | earthquakes near Camas County |
| Custer County, ID | 56 km (35 mi) | SSW of here | earthquakes near Custer County |
| Blaine County, ID | 69 km (43 mi) | NW of here | earthquakes near Blaine County |
| Elmore County, ID | 87 km (54 mi) | ENE of here | earthquakes near Elmore County |
| Boise County, ID | 93 km (58 mi) | E of here | earthquakes near Boise County |
| Gooding County, ID | 97 km (60 mi) | NNE of here | earthquakes near Gooding County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
5 earthquakes have been recorded within 50 km since this one.
- 1.8 29 km S of Clayton, Idaho
- 1.8 17 km SSE of Clayton, Idaho
- 2.2 28 km SSE of Clayton, Idaho
- 2.4 8 km ESE of Stanley, Idaho
- 2.1 30 km N of Sun Valley, Idaho
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.