Earthquake Information for Helena, Alabama

Helena, AL has a low earthquake risk, with a total of 20 earthquakes since 1931. The USGS database shows that there is a 2.54% chance of a major earthquake within 50km of Helena, AL within the next 50 years. The largest earthquake within 30 miles of Helena, AL was a 4.8 Magnitude in 1999.

Risk Level:
Low
Total Number of Earthquakes in Helena since 1931 within 30 miles
20
Probability of A 5.0 Earthquake within next 50 years
2.54%

Earthquake Probability for Helena, AL

View the probability of a major earthquake within the next 50 years in Helena, AL.

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
2.54%
5.1
2.05%
5.2
2.05%
5.2
2.05%
5.3
1.66%
5.4
1.34%
5.5
1.08%
5.6
1.00%
5.7
0.81%
5.8
0.71%
5.9
0.58%
6.0
0.54%
6.1
0.43%
6.2
0.37%
6.3
0.28%
6.4
0.26%
6.5
0.20%
6.6
0.16%
6.7
0.14%
6.8
0.10%
6.9
0.08%
7.0
0.06%
7.1
0.04%
7.2
0.03%
7.3
0.02%
7.4
0.01%
7.5
0.00%
7.6
0.00%
7.7
0.00%
7.8
0.00%
7.9
0.00%
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%