QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

2 km NNW of Corunna, Canada

· 5.0 km deep · released about 170 lb of TNT

10 km30 km60 km120 km N St. Clair County 18 kmMacomb County 46 kmSanilac County 63 kmLapeer County 67 kmOakland County 81 kmWayne County 96 kmGenesee County 104 kmTuscola County 104 kmHuron 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 2.5 (ml)
Depth
5.0 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
St. Clair County, 18 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1406 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 42.8995, -82.4453. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
St. Clair County, MI 18 km (11 mi) E of here earthquakes near St. Clair County
Macomb County, MI 46 km (28 mi) NE of here earthquakes near Macomb County
Sanilac County, MI 63 km (39 mi) SSE of here earthquakes near Sanilac County
Lapeer County, MI 67 km (41 mi) ESE of here earthquakes near Lapeer County
Oakland County, MI 81 km (50 mi) ENE of here earthquakes near Oakland County
Wayne County, MI 96 km (59 mi) NE of here earthquakes near Wayne County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 2.4 3 km SW of Corunna, Canada

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.