M3.2 earthquake 7 km NE of Sims, Illinois
A magnitude 3.2 earthquake struck 7 km NE of Sims, Illinois on Mon, Apr 16, 1984, 10:44 PM CST (04:44 UTC), 14 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.2 (Md, duration), minor
- Magnitude from
- NM
- Local time
- UTC
- 1984-04-17 04:44:44 UTC
- Depth
- 14.3 km (8.9 mi), shallow
- Epicenter
- 38.410° N, 88.480° W
- Region
- Illinois
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 3.2 | Md, duration | NM | Preferred · Reviewed |
| 3.4 | mb_Lg, Lg-wave body | USGS National Earthquake Information Center | Reviewed |
What happened
The USGS’s account of the effects of this earthquake.
Felt (IV) at Fairfield, Ellery, Dix, Griffin, Keenes and Mill Shoals. Felt (III) at Barnhill, Bluford, Geff, Macedonia and Mount Erie.
From the USGS event page for nm602314. U.S. Geological Survey text and figures are in the public domain.
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: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayIllinois earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event nm602314 (also filed as usp00023ma). Read Fri, Oct 2, 2026, 11:06 AM UTC.