Earthquake · reviewed by a seismologist
M 1.8ml
Earthquake near Deer Lodge, MT
No earthquake was likely felt in Deer Lodge in the 24 hours to 2:55 pm MST (21:55 UTC). The last one was M 3.2, 33 km (20 mi) N, at 11:22 am MST on 9 December 2025, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Deer Lodge
This page: a magnitude 1.8 earthquake was recorded 43 km (27 mi) north-northwest of Deer Lodge, MT, at 12:19 pm MST on 13 January 2025 (19:19 UTC), 13 km deep.
USGS: 17 km ENE of Drummond, Montana
- When
- 12:19 pm MST on 13 January 2025 ()
- Where
- 43 km (27 mi) north-northwest of Deer Lodge, MT · earthquakes near Deer Lodge
- Montana today
- every earthquake in Montana in the last 24 hours
- Magnitude
- M 1.8 (ml)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- Powell County, 10 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 667 days ago
Earthquake alerts for Deer Lodge, MT
Get a notification in this browser when USGS records an earthquake near Deer Lodge, MT. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 3 km (2 mi) from the epicentre. In Deer Lodge, 43 km away, the estimate is intensity I (not felt). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
How big was it?
This earthquake released about 14 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 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 760,000× the energy of this one
- Around the size people start to feel M 3.0 68× the energy of this one
- This earthquake M 1.8 about 14 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.
For this area
The largest earthquake within 50 km since 2016 was M 5.8 on 2017-07-06 — about 1,100,000 times the energy of this one.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 46.7528, -112.9540. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Powell County, MT | 10 km (6 mi) | N | earthquakes near Powell County |
| Granite County, MT | 54 km (33 mi) | SW | earthquakes near Granite County |
| Lewis and Clark County, MT | 60 km (37 mi) | NE | earthquakes near Lewis and Clark County |
| Deer Lodge County, MT | 75 km (46 mi) | S | earthquakes near Deer Lodge County |
| Missoula County, MT | 78 km (48 mi) | WNW | earthquakes near Missoula County |
| Silver Bow County, MT | 98 km (61 mi) | SSE | earthquakes near Silver Bow County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
50 earthquakes have been recorded within 50 km since this one.
- 1.2 14 km SE of Lincoln, Montana
- 1.2 22 km SW of Ovando, Montana
- 1.0 15 km SE of Lincoln, Montana
- 1.7 14 km ESE of Lincoln, Montana
- 1.4 5 km WSW of Elliston, Montana
- 2.1 6 km WSW of Elliston, Montana
- 1.2 17 km WNW of Lincoln, Montana
- 0.9 12 km ESE of Lincoln, Montana
- 1.3 14 km ESE of Lincoln, Montana
- 1.2 14 km ESE of Lincoln, Montana
- 3.1 5 km NW of Ovando, Montana
- 1.6 11 km ESE of Lincoln, 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
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.