QuakeIndex

mining explosion · reviewed by a seismologist

M 3.3ml

3 km S of Kinney, Minnesota

· 0.0 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N St. Louis County 19 kmItasca County 67 kmCarlton County 97 kmLake County 99 kmAitkin County 111 kmKoochiching County 116 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 3.3 (ml)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
St. Louis County, 19 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2346 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

USGS catalogues this as mining explosion, not an earthquake.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× more

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 47.4784, -92.7255. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
St. Louis County, MN 19 km (12 mi) SW of here earthquakes near St. Louis County
Itasca County, MN 67 km (41 mi) E of here earthquakes near Itasca County
Carlton County, MN 97 km (60 mi) N of here earthquakes near Carlton County
Lake County, MN 99 km (61 mi) W of here earthquakes near Lake County
Aitkin County, MN 111 km (69 mi) NNE of here earthquakes near Aitkin County
Koochiching County, MN 116 km (72 mi) SE of here earthquakes near Koochiching County

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

Aftershocks so far

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

  1. 3.0 12 km NNE of Chisholm, Minnesota
  2. 3.0 13 km N of Parkville, Minnesota
  3. 3.2 7 km NNE of Kinney, Minnesota
  4. 3.4 5 km NNE of Kinney, Minnesota
  5. 3.1 3 km N of Mountain Iron, Minnesota
  6. 3.2 10 km N of Mountain Iron, Minnesota
  7. 3.1 12 km N of Parkville, Minnesota
  8. 3.0 3 km NE of Nashwauk, Minnesota
  9. 3.0 0 km NE of Leonidas, Minnesota
  10. 3.1 7 km NNW of Mountain Iron, Minnesota
  11. 3.1 10 km N of Virginia, Minnesota
  12. 2.7 10 km NNW of Mountain Iron, Minnesota
  13. 3.4 7 km N of Parkville, Minnesota
  14. 2.8 Minnesota
  15. 3.0 6 km N of Mountain Iron, Minnesota

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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