QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Osburn, ID

No earthquake was likely felt in Osburn in the 24 hours to 3:38 am PST (11:38 UTC). The last one was M 2.3, 5 km (3 mi) SSE, at 2:46 pm PST on 3 March 2026, estimated intensity III (weak) in town. Every earthquake near Osburn

This page: a magnitude 2.1 earthquake was recorded 13 km (8 mi) east-southeast of Osburn, ID, at 6:22 am PDT on 6 October 2022 (13:22 UTC), 1.0 km deep.

USGS: Idaho-Montana border region

6:22 am PDT, Oct 6, 2022 · · 1.0 km deep · released about 43 lb of TNT

10 km30 km60 km120 km N Shoshone County 13 kmSanders County 59 kmBenewah County 66 kmMineral County 67 kmKootenai County 69 kmClearwater County 89 kmLatah County 99 kmBonner County 113 kmSpokane County 119 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
6:22 am PDT on 6 October 2022 ()
Where
13 km (8 mi) east-southeast of Osburn, ID · earthquakes near Osburn
Magnitude
M 2.1 (ml)
Depth
1.0 km below the surface
Felt
no reports yet
Nearest
Shoshone County, 13 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1433 days ago

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 17 km (11 mi) from the epicentre. In Osburn, 13 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: Osburn 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 47.4620, -115.8340. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shoshone County, ID 13 km (8 mi) SSW earthquakes near Shoshone County
Sanders County, MT 59 km (37 mi) NE earthquakes near Sanders County
Benewah County, ID 66 km (41 mi) WSW earthquakes near Benewah County
Mineral County, MT 67 km (42 mi) ESE earthquakes near Mineral County
Kootenai County, ID 69 km (43 mi) WNW earthquakes near Kootenai County
Clearwater County, ID 89 km (55 mi) S earthquakes near Clearwater County

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

Aftershocks so far

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

  1. 1.0 1 km WSW of Wallace, Idaho
  2. 2.3 3 km WSW of Wallace, Idaho
  3. 1.6 2 km SSE of Osburn, Idaho
  4. 2.3 1 km E of Mullan, Idaho
  5. 1.6 0 km ENE of Mullan, Idaho
  6. 3.3 2 km NNW of Mullan, Idaho
  7. 1.6 1 km E of Mullan, Idaho
  8. 2.4 20 km N of Kellogg, Idaho
  9. 2.1 19 km N of Kellogg, Idaho
  10. 1.9 0 km SE of Mullan, Idaho
  11. 1.9 19 km N of Kellogg, Idaho
  12. 1.7 1 km E of Mullan, Idaho
  13. 1.6 0 km E of Mullan, Idaho
  14. 2.0 1 km SE of Mullan, Idaho
  15. 2.4 1 km NNE 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

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