Earthquake · reviewed by a seismologist
M 1.8ml
19 km S of Lincoln, Montana
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 1.2 km below the surface
- Felt
- no reports yet
- Nearest
- Powell County, 22 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 150 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 17 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 5.8 870,000× the energy of this one
- Magna, Utah 2020 M 5.7 620,000× the energy of this one
- Around the size people start to feel M 3.0 55× the energy of this one
- This earthquake M 1.8 about 17 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 46.7827, -112.6583. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Powell County, MT | 22 km (14 mi) | ESE of here | earthquakes near Powell County |
| Lewis and Clark County, MT | 43 km (27 mi) | SSW of here | earthquakes near Lewis and Clark County |
| Granite County, MT | 73 km (45 mi) | NE of here | earthquakes near Granite County |
| Deer Lodge County, MT | 85 km (53 mi) | NNE of here | earthquakes near Deer Lodge County |
| Jefferson County, MT | 86 km (54 mi) | NNW of here | earthquakes near Jefferson County |
| Missoula County, MT | 98 km (61 mi) | ESE of here | earthquakes near Missoula County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 1.7 8 km S of Marysville, Montana
- 1.7 13 km SE of Lincoln, Montana
- 1.7 16 km W of Lincoln, Montana
- 2.4 7 km SSE of Lincoln, Montana
- 2.0 7 km SSE of Lincoln, Montana
- 1.5 14 km SE of Lincoln, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 5.8 on 2017-07-06 — it released about 870,000 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.