Earthquake · reviewed by a seismologist
M 2.2ml
27 km SSW of Silver Gate, Montana
- When
- Magnitude
- M 2.2 (ml)
- Depth
- 15 km below the surface
- Felt
- no reports yet
- Nearest
- Park County, 48 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2370 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 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
- Magna, Utah 2020 M 5.7 190,000× the energy of this one
- Around the size people start to feel M 3.0 17× the energy of this one
- This earthquake M 2.2 about 56 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 44.7635, -110.0658. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Park County, WY | 48 km (30 mi) | NW of here | earthquakes near Park County |
| Teton County, WY | 84 km (52 mi) | NNE of here | earthquakes near Teton County |
| Park County, MT | 86 km (53 mi) | SSE of here | earthquakes near Park County |
| Carbon County, MT | 96 km (60 mi) | WSW of here | earthquakes near Carbon County |
| Stillwater County, MT | 113 km (70 mi) | SSW of here | earthquakes near Stillwater County |
| Sweet Grass County, MT | 117 km (73 mi) | S of here | earthquakes near Sweet Grass County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
11 earthquakes have been recorded within 50 km since this one.
- 1.9 50 km SSE of Mammoth, Wyoming
- 1.5 45 km SE of Mammoth, Wyoming
- 1.5 41 km SSE of Mammoth, Wyoming
- 1.7 Wyoming
- 2.2 49 km SSE of Mammoth, Wyoming
- 1.9 49 km SSE of Mammoth, Wyoming
- 1.8 34 km S of Silver Gate, Montana
- 1.7 Wyoming
- 1.6 39 km SSE of Mammoth, Wyoming
- 1.8 37 km S of Silver Gate, Montana
- 1.6 34 km SW of Silver Gate, Montana
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.