mining explosion · reviewed by a seismologist
M 3.4ml
18 km NNE of Wright, Wyoming
- When
- Magnitude
- M 3.4 (ml)
- Depth
- 0.0 km below the surface
- Felt
- no reports yet
- Nearest
- Campbell County, 35 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 8 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
USGS catalogues this as mining explosion, not an earthquake.
How big was it?
This earthquake released about 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 89,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,800× the energy of this one
- This earthquake M 3.4 about 1.9 tons of TNT
- Around the size people start to feel M 3.0 this one released 4× 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.
Where
Epicentre 43.8965, -105.3818. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Campbell County, WY | 35 km (21 mi) | SSE of here | earthquakes near Campbell County |
| Weston County, WY | 65 km (41 mi) | W of here | earthquakes near Weston County |
| Johnson County, WY | 98 km (61 mi) | E of here | earthquakes near Johnson County |
| Crook County, WY | 101 km (63 mi) | SW of here | earthquakes near Crook County |
| Converse County, WY | 102 km (63 mi) | N of here | earthquakes near Converse County |
| Niobrara County, WY | 118 km (74 mi) | NW of here | earthquakes near Niobrara County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further earthquakes have been recorded within 50 km since this one.
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 2023-01-23 — it released about 11 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.