Earthquakes by city United States 100 km
Seismic city profile

Upper Alton

Upper Alton, United States: 8 earthquakes of magnitude 4.0+ detected within 100 km.

Population
29,251
Residents in the indexed city record.
Earthquakes
8
Earthquakes at M4.0+ nearby.
Max magnitude
5.1
Strongest recorded event in the current radius.
Timezone
America/Chicago
Coordinates 38.911, -90.151
Nearby activity pulse
Last 30 days
0
Last 12 months
0
Last nearby event: 1983-05-15 05:16 UTC
Strongest nearby event
M 5.1
US
1917-04-09 20:52 UTC

Map

Earthquakes within 100 km of Upper Alton

The map centers on Upper Alton and highlights the most recent earthquakes detected within 100 km.

Average magnitude
4.4
Average depth
3.8 km

Timeline

Recent seismic activity

Latest 8 events shown
UTC Magnitude Region Depth
1983-05-15 05:16 M 4.3
Belleville
United States
8.5 km
1974-06-05 08:06 M 4.0
St Louis
United States
11.0 km
1955-04-09 13:01 M 4.3
Belleville
United States
11.0 km
1953-09-11 18:26 M 4.0
St Louis
United States
0.0 km
1947-06-30 04:23 M 4.2
Belleville
United States
0.0 km
1939-11-23 15:14 M 4.6
Belleville
United States
0.0 km
1917-04-09 20:52 M 5.1 Oakville
United States
0.0 km
1902-01-24 10:48 M 4.5
St Louis
United States
0.0 km

Monthly profile

Recent monthly trend

Historic snapshot

Earthquakes history

Year Max magnitude Earthquakes