The numbers tell the story of the storm that raked the area about 4:30.
According to data collected at Lee Gilmer Memorial Airport, the barometric pressure dropped from 29.76 at 12:50 Saturday morning to 29.63 at 3:50, about 40 minutes before the storm struck. The temperature dipped six degrees between 4:30 and 5:00 as the storm passed through, briefly producing hail in many areas.
For about 20 minutes, between 4:30 and 4:50, rain was falling at the rate of about one inch per hour. But, the storm was over quickly - after only about 15 minutes and produced only about .33 inches of rain.
Sustained winds during the storm were recorded at 25 miles-an-hour with the top gust at 43 miles-an-hour.
The storm was part of a cell that damaged scores of businesses and homes in metro Atlanta (see separate story) and about 100 boats at Aqualand Marina on Lake Lanier near Flowery Brach (see separate story).
http://accesswdun.com/article/2006/4/112719