Port St. John, FL has a very low earthquake risk, with a total of 1 earthquakes since 1931. The USGS database shows that there is a 0.43% chance of a major earthquake within 50km of Port St. John, FL within the next 50 years. The largest earthquake within 30 miles of Port St. John, FL was a 0.0 Magnitude in 1973.
View the probability of a major earthquake within the next 50 years in Port St. John, FL.
Total Number of Earthquakes in Port St. John, FL within 30 miles. All distances and depths in the table are measured in miles.