Old Saybrook Earthquake Information

Old Saybrook Earthquake Risk Grade

The USGS database shows that there is a 1.268% chance of a major earthquake within 50 miles of Old Saybrook, Connecticut within the next 50 years. The largest earthquake within 50 miles of Old Saybrook, Connecticut was a 3.8 Magnitude in 1981.

Probability of earthquakes within the next 50 years

Within 31 Miles / 50km above magnitude

Magnitude
Probability
5.0
1.268%
5.1
1.026%
5.2
1.026%
5.3
0.831%
5.4
0.674%
5.5
0.548%
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5.6
0.508%
5.7
0.414%
5.8
0.365%
5.9
0.299%
6.0
0.278%
6.1
0.223%
6.2
0.194%
6.3
0.155%
6.4
0.143%
6.5
0.113%
6.6
0.096%
6.7
0.087%
6.8
0.064%
6.9
0.052%
7.0
0.045%
7.1
0.028%
7.2
0.020%
7.3
0.015%
7.4
0.006%
7.5
0.001%
7.6
0.001%
7.7
0.000%
7.8
0.000%
7.9
0.000%
8.0
0.000%
8.1
0.000%
8.2
0.000%
8.3
0.000%
8.4
0.000%
8.5
0.000%
8.6
0.000%
8.7
0.000%
8.8
0.000%
8.9
0.000%
9.0
0.000%
9.1
0.000%
9.2
0.000%

Historical Earthquake Data (Within 50 Miles)

All distances and depths in the table below are measured in miles.