QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

6 km S of Saint Maries, Idaho

· -0.8 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Benewah County 7 kmKootenai County 48 kmLatah County 50 kmShoshone County 52 kmSpokane County 76 kmWhitman County 83 kmClearwater County 94 kmNez Perce County 103 kmMineral County 112 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 1.7 (ml)
Depth
-0.8 km below the surface
Felt
no reports yet
Nearest
Benewah County, 7 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 796 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 47.2517, -116.5585. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Benewah County, ID 7 km (4 mi) ENE of here earthquakes near Benewah County
Kootenai County, ID 48 km (30 mi) SSE of here earthquakes near Kootenai County
Latah County, ID 50 km (31 mi) NNE of here earthquakes near Latah County
Shoshone County, ID 52 km (32 mi) WSW of here earthquakes near Shoshone County
Spokane County, WA 76 km (47 mi) ESE of here earthquakes near Spokane County
Whitman County, WA 83 km (52 mi) ENE of here earthquakes near Whitman 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 9 km ESE of Princeton, Idaho
  2. 2.1 4 km NW of Rockford Bay, Idaho
  3. 1.6 7 km SSE of Saint Maries, Idaho
  4. 2.1 6 km N of Onaway, Idaho
  5. 2.0 3 km N of Harrison, Idaho
  6. 2.1 10 km SSW of Saint Maries, Idaho
  7. 1.9 4 km SSE of Saint Maries, Idaho
  8. 2.0 4 km E of Plummer, Idaho
  9. 2.3 11 km WNW of Deary, Idaho
  10. 1.6 9 km NNE of Parkline, Idaho
  11. 1.6 4 km N of Rockford Bay, Idaho
  12. 1.9 4 km SW of Farmington, Washington
  13. 1.9 7 km S of Chatcolet, Idaho
  14. 2.4 7 km NE of Bovill, Idaho
  15. 1.6 7 km WNW of Rockford Bay, 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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