QuakeIndex

mining explosion · reviewed by a seismologist

M 2.7mb_lg

11 km N of Keewatin, Minnesota

· 0.0 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Itasca County 39 kmSt. Louis County 44 kmKoochiching County 97 kmAitkin County 103 kmCarlton County 105 kmCass 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 2.7 (mb_lg)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
Itasca County, 39 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2682 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 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 47.5019, -93.0937. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Itasca County, MN 39 km (24 mi) E of here earthquakes near Itasca County
St. Louis County, MN 44 km (28 mi) W of here earthquakes near St. Louis County
Koochiching County, MN 97 km (60 mi) SSE of here earthquakes near Koochiching County
Aitkin County, MN 103 km (64 mi) NNE of here earthquakes near Aitkin County
Carlton County, MN 105 km (65 mi) NNW of here earthquakes near Carlton County
Cass County, MN 112 km (69 mi) ENE of here earthquakes near Cass 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. 2.7 10 km NNW of Mountain Iron, Minnesota
  2. 3.4 7 km N of Parkville, Minnesota
  3. 2.8 Minnesota
  4. 3.0 6 km N of Mountain Iron, Minnesota
  5. 3.1 9 km NNW of Mountain Iron, Minnesota
  6. 3.1 4 km NNW of Mountain Iron, Minnesota
  7. 3.0 5 km NW of Mountain Iron, Minnesota
  8. 3.1 9 km NNW of Kinney, Minnesota
  9. 3.2 3 km N of Leonidas, Minnesota
  10. 3.0 5 km NNE of Parkville, Minnesota
  11. 3.1 3 km W of Mountain Iron, Minnesota
  12. 3.1 3 km NNW of Parkville, Minnesota
  13. 3.1 9 km N of Parkville, Minnesota
  14. 3.2 6 km NNE of Parkville, Minnesota
  15. 3.3 7 km NNW 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

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