QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Osburn, ID

USGS: 0 km NE of Mullan, Idaho

6:00 pm PST, Jan 22, 2021 · · 0.0 km deep · released about 15 lb of TNT

Every earthquake near Osburn Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shoshone County 16 kmSanders County 56 kmMineral County 66 kmBenewah County 69 kmKootenai County 71 kmClearwater County 90 kmLatah County 102 kmBonner County 113 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
6:00 pm PST on 22 January 2021 ()
Where
16 km (10 mi) ESE of Osburn, ID · earthquakes near Osburn
Magnitude
M 1.8 (ml)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
Shoshone County, 16 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2078 days ago

A magnitude 1.8 earthquake was recorded 16 km (10 mi) ESE of Osburn, ID, at 6:00 pm PST on 22 January 2021 (02:00 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Kellogg.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 47.4763, -115.7940. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shoshone County, ID 16 km (10 mi) SSW earthquakes near Shoshone County
Sanders County, MT 56 km (35 mi) NE earthquakes near Sanders County
Mineral County, MT 66 km (41 mi) SE earthquakes near Mineral County
Benewah County, ID 69 km (43 mi) WSW earthquakes near Benewah County
Kootenai County, ID 71 km (44 mi) WNW earthquakes near Kootenai County
Clearwater County, ID 90 km (56 mi) S earthquakes near Clearwater County

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

Aftershocks so far

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

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