Yulee-area historical tornado activity is below Florida state average. It is 39% smaller than the overall U.S. average. On 10/2/1994, a category F2 (max. wind speeds 113-157 mph) tornado 7.0 miles away from the Yulee place center injured one person and caused between $500,000 and $5,000,000 in damages.
An Urban Institute paper argued that what they referred to as upper middle class, or those with a three-person household income between to $100,000 and $350,000, has grown from 12.9% of the population in 1979 to 29.4% in 2014.
You can find people earning 7 figures who think they are middle class - by income definition (and a generous one at that), household making between $30,000 and $100,000 are middle class. The top 5% are household incomes of $165,000 and up.