QuakeIndex

explosion · reviewed by a seismologist

M 1.6md

13 km NNW of Athol, Idaho

· -1.0 km deep · released about 8.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bonner County 30 kmKootenai County 44 kmPend Oreille County 64 kmSpokane County 69 kmBoundary County 80 kmStevens County 89 kmBenewah County 95 kmShoshone County 103 kmLincoln County 110 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 1.6 (md)
Depth
-1.0 km below the surface
Felt
no reports yet
Nearest
Bonner County, 30 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 297 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 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 48.0680, -116.7537. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bonner County, ID 30 km (19 mi) SSW of here earthquakes near Bonner County
Kootenai County, ID 44 km (27 mi) N of here earthquakes near Kootenai County
Pend Oreille County, WA 64 km (40 mi) SE of here earthquakes near Pend Oreille County
Spokane County, WA 69 km (43 mi) NE of here earthquakes near Spokane County
Boundary County, ID 80 km (50 mi) SSW of here earthquakes near Boundary County
Stevens County, WA 89 km (55 mi) ESE of here earthquakes near Stevens County

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

Aftershocks so far

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

  1. 2.3 2 km NE of Dover, Idaho
  2. 2.2 8 km WNW of Dover, Idaho
  3. 1.7 9 km WSW of Newport, Washington
  4. 1.8 6 km SSW of Athol, 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.