M1.5 earthquake 6 km SSE of Des Arc, Missouri
A magnitude 1.5 earthquake struck 6 km SSE of Des Arc, Missouri on Sun, Aug 21, 1983, 5:01 PM CDT (22:01 UTC), 17 km (10 mi) below the surface.
A larger quake followed: M2.3 10 km SSE of Grandin, Missouri. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (md), micro
- Local time
- UTC
- 1983-08-21 22:01:47 UTC
- Depth
- 16.8 km (10.4 mi), shallow
- Epicenter
- 37.230° N, 90.600° W
- Region
- Missouri
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
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: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.310 km SSE of Grandin, Missouri · 15726 days ago · 5 km deep · 57 km away
- 2.44 km NW of Terre du Lac, Missouri · 15679 days ago · 2 km deep · 79 km away
Before
Earthquakes todayMissouri earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event nm602021. Read Tue, Sep 22, 2026, 3:35 PM UTC.