QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Northern Idaho

· 10 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Lewis County 34 kmClearwater County 56 kmIdaho County 58 kmNez Perce County 61 kmLatah County 88 kmAsotin County 96 kmWallowa 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 1.7 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Lewis County, 34 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1345 days ago

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

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 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× 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 46.2245, -115.9810. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lewis County, ID 34 km (21 mi) E of here earthquakes near Lewis County
Clearwater County, ID 56 km (35 mi) SSW of here earthquakes near Clearwater County
Idaho County, ID 58 km (36 mi) NW of here earthquakes near Idaho County
Nez Perce County, ID 61 km (38 mi) E of here earthquakes near Nez Perce County
Latah County, ID 88 km (54 mi) SE of here earthquakes near Latah County
Asotin County, WA 96 km (60 mi) E of here earthquakes near Asotin 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. 2.2 4 km SSE of Grangeville, Idaho
  2. 2.1 7 km SSW of Orofino, Idaho
  3. 2.2 11 km SE of Weippe, Idaho
  4. 1.7 28 km ESE of Weippe, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2018-11-20 — it released about 4,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.