QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Lincoln, MT

No earthquake was likely felt in Lincoln in the 24 hours to 8:24 am MST (15:24 UTC). The last one was M 3.1, 40 km (25 mi) WNW, at 8:34 pm MDT on 4 October 2026, estimated intensity II (weak) in town; 4 felt reports to USGS. Every earthquake near Lincoln

This page: a magnitude 2.5 earthquake was recorded 22 km (14 mi) west-northwest of Lincoln, MT, at 7:01 am MST on 7 February 2018 (14:01 UTC), 5.0 km deep. 1 person has reported feeling it to USGS.

USGS: 13 km E of Ovando, Montana

7:01 am MST, Feb 7, 2018 · · 5.0 km deep · released about 170 lb of TNT

10 km30 km60 km120 km N Powell County 20 kmLewis and Clark County 44 kmMissoula County 71 kmGranite County 79 kmTeton County 102 kmDeer Lodge County 105 kmLake County 109 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
7:01 am MST on 7 February 2018 ()
Where
22 km (14 mi) west-northwest of Lincoln, MT · earthquakes near Lincoln
Montana today
every earthquake in Montana in the last 24 hours
Magnitude
M 2.5 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Powell County, 20 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3114 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 21 km (13 mi) from the epicentre. In Lincoln, 22 km away, the estimate is intensity II (weak). 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.

Likely felt in: Lincoln 22 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 89,000 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 47.0256, -112.9516. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Powell County, MT 20 km (13 mi) S earthquakes near Powell County
Lewis and Clark County, MT 44 km (28 mi) ENE earthquakes near Lewis and Clark County
Missoula County, MT 71 km (44 mi) W earthquakes near Missoula County
Granite County, MT 79 km (49 mi) SSW earthquakes near Granite County
Teton County, MT 102 km (63 mi) NNE earthquakes near Teton County
Deer Lodge County, MT 105 km (65 mi) S earthquakes near Deer Lodge County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

59 earthquakes have been recorded within 50 km since this one.

  1. 2.3 11 km ESE of Lincoln, Montana
  2. 1.6 15 km SE of Lincoln, Montana
  3. 1.7 14 km SE of Lincoln, Montana
  4. 1.6 15 km SE of Lincoln, Montana
  5. 1.5 14 km SE of Lincoln, Montana
  6. 3.1 17 km SE of Lincoln, Montana
  7. 3.6 16 km SE of Lincoln, Montana
  8. 1.5 14 km SE of Lincoln, Montana
  9. 1.5 14 km SE of Lincoln, Montana
  10. 1.8 14 km ESE of Lincoln, Montana
  11. 1.9 10 km ESE of Lincoln, Montana
  12. 1.8 14 km ESE of Lincoln, Montana
  13. 1.9 14 km ESE of Lincoln, Montana
  14. 1.6 27 km W of Augusta, Montana
  15. 1.7 14 km ESE 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.