M3.6 earthquake 7 km SE of Madison, Ohio
A magnitude 3.6 earthquake struck 7 km SE of Madison, Ohio on Sun, Aug 27, 2023, 10:43 PM EDT (02:43 UTC), 5 km (3 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.6 (mwr), minor
- Local time
- UTC
- 2023-08-28 02:43:26 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 41.731° N, 80.972° W
- Region
- Ohio
- Felt reports
- 1,722
- Strongest shaking
- V, moderate shaking
- PAGER alert
- Green
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- V, moderate shaking
- Peak ground acceleration
- 10.1% of gravity
- Peak ground velocity
- 1.7 cm/s
- Map
- Automatic
Did you feel it?
1,722 people reported to the USGS what they felt; the strongest reported shaking was VI, strong shaking.
Estimated impact
The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.
- Alert level
- Green: little or no damage or loss of life expected
| Range | Chance |
|---|---|
| Under 1 | 65% |
| 1 to 10 | 30% |
| 10 to 100 | 4% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
| Range, million USD | Chance |
|---|---|
| Under 1 | 65% |
| 1 to 10 | 30% |
| 10 to 100 | 4% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Oblique reverse
- Moment magnitude
- 3.6 Mwr
- Nodal plane 1
- Strike 180°, dip 81°, rake 138°
- Nodal plane 2
- Strike 278°, dip 49°, rake 13°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 4.5 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- Operator assigned
- Station coverage gap
- 47°
- Stations used
- 86
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.3Ohio · 1122 days ago · 5 km deep · 4 km away · felt by 34
- 2.43 km SE of Madison, Ohio · 1117 days ago · 7 km deep · 4 km away · felt by 4
- 2.22 km E of Madison, Ohio · 1117 days ago · 5 km deep · 6 km away · felt by 2
- 2.3Ohio · 1117 days ago · 9 km deep · 4 km away · felt by 3
- 2.0Ohio · 1097 days ago · 5 km deep · 11 km away · felt by 9
- 2.22 km ESE of Madison, Ohio · 1096 days ago · 5 km deep · 5 km away · felt by 6
- 1.73 km W of Madison, Ohio · 1091 days ago · 5 km deep · 11 km away · felt by 2
- 1.85 km SE of Madison, Ohio · 1089 days ago · 5 km deep · 2 km away
Before
Earthquakes todayOhio earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000krer. Read Tue, Sep 22, 2026, 7:39 PM UTC.