Earthquake · reviewed by a seismologist
M 2.7mb_lg
4 km ENE of North Madison, Ohio
- When
- Magnitude
- M 2.7 (mb_lg)
- Depth
- 5.0 km below the surface
- Felt
- 85 reports · strongest reported intensity IV
- Nearest
- Lake County, 17 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 29 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 85 people have reported feeling it to USGS.
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.
- Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
- Magna, Utah 2020 M 5.7 32,000× the energy of this one
- Around the size people start to feel M 3.0 2.8× the energy of this one
- 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 41.8102, -80.9995. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Lake County, OH | 17 km (10 mi) | ENE of here | earthquakes near Lake County |
| Ashtabula County, OH | 24 km (15 mi) | WSW of here | earthquakes near Ashtabula County |
| Geauga County, OH | 37 km (23 mi) | NNE of here | earthquakes near Geauga County |
| Cuyahoga County, OH | 58 km (36 mi) | ENE of here | earthquakes near Cuyahoga County |
| Trumbull County, OH | 59 km (37 mi) | NNW of here | earthquakes near Trumbull County |
| Portage County, OH | 73 km (45 mi) | NNE of here | earthquakes near Portage County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
8 earthquakes have been recorded within 50 km since this one.
- 2.0 1 km W of North Perry, Ohio
- 2.0 3 km SE of Madison, Ohio
- 2.2 5 km W of Rock Creek, Ohio
- 2.1 2 km SE of Madison, Ohio
- 2.2 6 km SE of Madison, Ohio
- 2.3 4 km SE of Madison, Ohio
- 2.9 3 km SW of Madison, Ohio
- 2.2 3 km SSE of Madison, Ohio
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 4.0 on 2019-06-10 — it released about 89 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.