QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

13 km WSW of Saint Regis, Montana

· 11 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mineral County 20 kmShoshone County 48 kmSanders County 56 kmClearwater County 71 kmLake County 99 kmBenewah County 103 kmMissoula County 107 kmKootenai County 117 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 2.6 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Mineral County, 20 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1336 days ago

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

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 47.2568, -115.2674. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mineral County, MT 20 km (12 mi) NW of here earthquakes near Mineral County
Shoshone County, ID 48 km (30 mi) ESE of here earthquakes near Shoshone County
Sanders County, MT 56 km (35 mi) S of here earthquakes near Sanders County
Clearwater County, ID 71 km (44 mi) NNE of here earthquakes near Clearwater County
Lake County, MT 99 km (61 mi) WSW of here earthquakes near Lake County
Benewah County, ID 103 km (64 mi) E of here earthquakes near Benewah County

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

Aftershocks so far

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

  1. 2.3 1 km E of Mullan, Idaho
  2. 1.6 0 km ENE of Mullan, Idaho
  3. 3.3 2 km NNW of Mullan, Idaho
  4. 1.6 1 km E of Mullan, Idaho
  5. 1.9 0 km SE of Mullan, Idaho
  6. 1.7 1 km E of Mullan, Idaho
  7. 1.6 0 km E of Mullan, Idaho
  8. 2.0 1 km SE of Mullan, Idaho
  9. 2.4 1 km NNE of Mullan, Idaho
  10. 1.5 1 km SE of Mullan, Idaho
  11. 2.2 0 km NNE of Mullan, Idaho
  12. 2.3 0 km E of Mullan, Idaho
  13. 2.4 1 km SSW of Mullan, Idaho
  14. 2.1 1 km NE of Mullan, Idaho
  15. 2.3 1 km NE of Mullan, Idaho

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.