Earthquake · reviewed by a seismologist
M 2.0ml
19 km SW of Heart Butte, Montana
- When
- Magnitude
- M 2.0 (ml)
- Depth
- 23 km below the surface
- Felt
- no reports yet
- Nearest
- Glacier County, 59 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1412 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 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
- Magna, Utah 2020 M 5.7 350,000× the energy of this one
- Around the size people start to feel M 3.0 32× the energy of this one
- This earthquake M 2.0 about 30 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 48.1754, -113.0497. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Glacier County, MT | 59 km (37 mi) | S of here | earthquakes near Glacier County |
| Pondera County, MT | 62 km (38 mi) | W of here | earthquakes near Pondera County |
| Teton County, MT | 70 km (43 mi) | NW of here | earthquakes near Teton County |
| Flathead County, MT | 75 km (47 mi) | E of here | earthquakes near Flathead County |
| Lake County, MT | 97 km (60 mi) | NE of here | earthquakes near Lake County |
| Toole County, MT | 110 km (69 mi) | WSW of here | earthquakes near Toole County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
4 earthquakes have been recorded within 50 km since this one.
- 2.1 27 km E of Swan Lake, Montana
- 2.5 24 km E of Swan Lake, Montana
- 2.4 27 km E of Swan Lake, Montana
- 1.6 19 km SSE of East Glacier Park Village, 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.