QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

10 km NE of Lima, Montana

· 10 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 48 kmBeaverhead County 57 kmMadison County 83 kmFremont County 97 kmJefferson County 102 kmLemhi 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 3.0 (ml)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Clark County, 48 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2656 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 44.7065, -112.4959. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, ID 48 km (30 mi) NNW of here earthquakes near Clark County
Beaverhead County, MT 57 km (35 mi) SSE of here earthquakes near Beaverhead County
Madison County, MT 83 km (51 mi) SW of here earthquakes near Madison County
Fremont County, ID 97 km (60 mi) NW of here earthquakes near Fremont County
Jefferson County, ID 102 km (63 mi) N of here earthquakes near Jefferson County
Lemhi County, ID 112 km (70 mi) ESE of here earthquakes near Lemhi County

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

Aftershocks so far

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

  1. 2.2 35 km NNE of Spencer, Idaho
  2. 1.5 37 km SSW of Dillon, Montana
  3. 2.5 21 km SW of Lima, Montana
  4. 2.0 36 km NNE of Spencer, Idaho
  5. 1.6 3 km ENE of Lima, Montana
  6. 1.6 23 km ESE of Dillon, Montana
  7. 2.6 16 km NE of Lima, Montana
  8. 1.8 46 km NNE of Spencer, Idaho
  9. 1.7 6 km E of Lima, Montana
  10. 2.0 28 km SW of Dillon, Montana
  11. 1.7 8 km E of Lima, Montana
  12. 1.6 7 km E of Lima, Montana
  13. 1.6 8 km E of Lima, Montana
  14. 1.9 7 km E of Lima, Montana
  15. 3.3 8 km ESE of Lima, Montana

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 4.6 on 2019-04-09 — it released about 250 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.