QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

13 km WNW of Ovando, Montana

· 13 km deep · released about 24 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Powell County 36 kmMissoula County 45 kmLewis and Clark County 70 kmGranite County 74 kmLake County 88 kmDeer Lodge County 107 kmTeton County 115 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 1.9 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Powell County, 36 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1622 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 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 47.0518, -113.3025. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Powell County, MT 36 km (23 mi) NW of here earthquakes near Powell County
Missoula County, MT 45 km (28 mi) E of here earthquakes near Missoula County
Lewis and Clark County, MT 70 km (44 mi) W of here earthquakes near Lewis and Clark County
Granite County, MT 74 km (46 mi) N of here earthquakes near Granite County
Lake County, MT 88 km (55 mi) SE of here earthquakes near Lake County
Deer Lodge County, MT 107 km (67 mi) N of here earthquakes near Deer Lodge County

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

Aftershocks so far

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

  1. 2.3 34 km NE of Seeley Lake, Montana
  2. 1.8 20 km N of Ovando, Montana
  3. 2.4 10 km S of Ovando, Montana
  4. 2.2 43 km NNE of Ovando, Montana
  5. 2.5 42 km NNE of Ovando, Montana
  6. 2.4 16 km ENE of Seeley Lake, Montana
  7. 1.8 17 km ENE of Drummond, Montana
  8. 2.3 16 km ENE of Drummond, Montana
  9. 2.7 6 km SSE of Seeley Lake, Montana
  10. 1.9 6 km SSE of Seeley Lake, Montana
  11. 1.5 12 km SW of Seeley Lake, Montana
  12. 1.9 7 km WSW of Drummond, Montana
  13. 1.6 15 km WNW of Lincoln, Montana
  14. 1.8 21 km E of Seeley Lake, Montana
  15. 2.2 33 km NE of Seeley Lake, 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.