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

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

Last 12 months

Last nearby event: 1983-05-15 05:16 UTC

Strongest nearby event

M 5.1

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

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

Historic snapshot

Year	Max magnitude	Earthquakes