The entire state averages 30 days of thunderstorm activity per year.

South Carolina averages around 50 days of thunderstorm activity a year.

Iowa averages about 50 days of thunderstorm activity per year.

By then, the storm had a lot of thunderstorm activity near its center.

The total was higher than average, although many of them were poorly defined and had little thunderstorm activity.

As a result, new thunderstorm activity began to blossom and move to the east.

The system formed within a very large area of thunderstorm activity.

South Carolina averages around 64 days of thunderstorm activity per year.

This leads to a significant decrease in thunderstorm activity, and may last from a day or two to close to a week.

The result was thunderstorm activity in an area where it normally does not occur.