QuakeIndex

Earthquake · reviewed by a seismologist

M 5.8mww

11 km SE of Lincoln, Montana

· 12 km deep · released about 7.6 kilotons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Powell County 27 kmLewis and Clark County 31 kmGranite County 85 kmJefferson County 93 kmDeer Lodge County 98 kmMissoula County 101 kmBroadwater County 103 kmCascade County 105 kmTeton County 107 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
Magnitude
M 5.8 (mww)
Depth
12 km below the surface
Felt
13377 reports · strongest reported intensity VIII
Measured shaking
intensity VII (ShakeMap)
USGS impact alert
green
Nearest
Powell County, 27 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 95 days ago

This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre. 13377 people have reported feeling it to USGS.

How big was it?

This earthquake released about 7.6 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.8 would have released about 32 times as much.

  1. Ridgecrest, California 2019 M 7.1 89× the energy of this one
  2. Loma Prieta, California 1989 M 6.9 45× the energy of this one
  3. Northridge, California 1994 M 6.7 22× the energy of this one
  4. This earthquake M 5.8 about 7.6 kilotons of TNT
  5. Magna, Utah 2020 M 5.7 this one released 1.4× more
  6. Around the size people start to feel M 3.0 this one released 16,000× more

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 46.8811, -112.5753. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Powell County, MT 27 km (17 mi) E of here earthquakes near Powell County
Lewis and Clark County, MT 31 km (19 mi) SSW of here earthquakes near Lewis and Clark County
Granite County, MT 85 km (53 mi) NE of here earthquakes near Granite County
Jefferson County, MT 93 km (58 mi) NNW of here earthquakes near Jefferson County
Deer Lodge County, MT 98 km (61 mi) NNE of here earthquakes near Deer Lodge County
Missoula County, MT 101 km (63 mi) E of here earthquakes near Missoula County

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

Aftershocks so far

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

  1. 3.0 14 km WSW of Lincoln, Montana
  2. 2.2 17 km SE of Lincoln, Montana
  3. 2.5 9 km SE of Lincoln, Montana
  4. 2.0 12 km ESE of Lincoln, Montana
  5. 3.1 14 km SE of Lincoln, Montana
  6. 2.6 16 km SSE of Lincoln, Montana
  7. 2.0 14 km SE of Lincoln, Montana
  8. 3.0 13 km ESE of Lincoln, Montana
  9. 2.3 13 km ESE of Lincoln, Montana
  10. 2.3 15 km SE of Lincoln, Montana
  11. 2.4 15 km SE of Lincoln, Montana
  12. 2.6 14 km SE of Lincoln, Montana
  13. 2.5 14 km SE of Lincoln, Montana
  14. 2.5 13 km SSE of Lincoln, Montana
  15. 2.9 12 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 4.3 on 2016-01-30.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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