M3.7 earthquake 5 km WSW of Geff, Illinois
A magnitude 3.7 earthquake struck 5 km WSW of Geff, Illinois on Thu, Jun 1, 1978, 9:07 PM CDT (02:07 UTC), 20 km (12 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (mlg), minor
- Local time
- UTC
- 1978-06-02 02:07:28 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 38.420° N, 88.460° W
- Region
- Illinois
- Strongest shaking
- IV, light shaking
- 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
- IV, light shaking
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayIllinois earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event nm600726 (also filed as usp0000uvj). Read Sat, Sep 26, 2026, 11:03 PM UTC.