Earthquake Information for Grand Tower Township, Illinois

Grand Tower Township, IL has a moderate earthquake risk, with a total of 15 earthquakes since 1931. The USGS database shows that there is a 6.96% chance of a major earthquake within 50km of Grand Tower Township, IL within the next 50 years. The largest earthquake within 30 miles of Grand Tower Township, IL was a 5.0 Magnitude in 1977.

Risk Level:
Moderate
Total Number of Earthquakes in Grand Tower Township since 1931 within 30 miles
15
Probability of A 5.0 Earthquake within next 50 years
6.96%

Earthquake Probability for Grand Tower Township, IL

View the probability of a major earthquake within the next 50 years in Grand Tower Township, IL.

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2
(within 31 km/51 miles above magnitude)
MAGNITUDE
PROBABILITY
5.0
6.96%
5.1
5.72%
5.2
5.72%
5.2
5.72%
5.3
4.72%
5.4
3.90%
5.5
3.24%
5.6
3.03%
5.7
2.54%
5.8
2.28%
5.9
1.93%
6.0
1.82%
6.1
1.50%
6.2
1.33%
6.3
1.10%
6.4
1.03%
6.5
0.85%
6.6
0.75%
6.7
0.70%
6.8
0.58%
6.9
0.53%
7.0
0.50%
7.1
0.44%
7.2
0.42%
7.3
0.42%
7.4
0.34%
7.5
0.18%
7.6
0.18%
7.7
0.07%
7.8
0.07%
7.9
0.04%
8.0
0.00%
8.1
0.00%
8.2
0.00%
8.3
0.00%
8.4
0.00%
8.5
0.00%
8.6
0.00%
8.7
0.00%
8.8
0.00%
8.9
0.00%
9.0
0.00%
9.1
0.00%
9.2
0.00%