Earthquake · reviewed by a seismologist
M 3.2mwr
2 km SSE of Detroit Beach, Michigan
- When
- Magnitude
- M 3.2 (mwr)
- Depth
- 9.2 km below the surface
- Felt
- 2157 reports · strongest reported intensity V
- Measured shaking
- intensity IV (ShakeMap)
- Nearest
- Monroe County, 14 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 977 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2157 people have reported feeling it to USGS.
How big was it?
This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 180,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
- Magna, Utah 2020 M 5.7 5,600× the energy of this one
- This earthquake M 3.2 about 1,900 lb of TNT
- Around the size people start to feel M 3.0 this one released 2× 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 41.9125, -83.3179. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Monroe County, MI | 14 km (9 mi) | E of here | earthquakes near Monroe County |
| Lucas County, OH | 28 km (18 mi) | NNE of here | earthquakes near Lucas County |
| Wayne County, MI | 42 km (26 mi) | S of here | earthquakes near Wayne County |
| Ottawa County, OH | 48 km (30 mi) | NNW of here | earthquakes near Ottawa County |
| Washtenaw County, MI | 58 km (36 mi) | SE of here | earthquakes near Washtenaw County |
| Lenawee County, MI | 63 km (39 mi) | E of here | earthquakes near Lenawee County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 2.7 8 km N of Maybee, Michigan
- 3.0 7 km SSE of Amherstburg, Canada
- 2.3 4 km SSE of Walbridge, Ohio
- 2.5 4 km WSW of Millbury, Ohio
- 2.6 3 km SSE of Walbridge, Ohio
- 2.4 5 km W of Luna Pier, Michigan
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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.