The following events were reported: Hail, Thunderstorm Wind. These occurred near station USW00013874, approximately 28.9763 km away, between 2008-08-02 17:30:00 and 2008-08-02 19:35:00. The events included records with hailstones measuring 39.48909090909091 inches.The events resulted in 1 injuries and 0 fatalities. The events caused property damage valued at 178000.0 and crop damage of 0.0. Episode Narrative: An unusually strong upper trough was sweeping through the Great Lakes and Northeast from the 2nd into the 3rd of August. This was pushing an equally unusually strong cold front for early August into the southeast U.S. This front combined with a very warm humid air mass, partially a result of the lingering remnants of Hurricane Dolly, to result in the development of numerous strong to severe thunderstorms in far north Georgia during the mid to late afternoon hours. Thunderstorms across north Georgia merged into a near solid arched band of thunderstorms which raced southward during the evening hours into the Atlanta metropolitan area. Large hail and intense cloud-to-ground lightning accompanied the thunderstorms in north Georgia. Leading outflow winds produced a wind gust of 71 mph at Atlanta's Hartsfield-Jackson International Airport as the thunderstorms came through around 730 pm EDT. The thunderstorms subsequently diminished as they pushed further south of the Atlanta area, but redeveloped once again into strong to severe thunderstorms during the late evening as the outflow boundary pushed into the Macon area and nearby counties. Numerous reports of downed trees were received from many north and central Georgia counties as a result of these thunderstorms. An unusually strong upper trough was sweeping through the Great Lakes and Northeast from the 2nd into the 3rd of August. Event Narrative: The Spalding County 911 Center reported that a couple of power lines were down in the county. The Atlanta Hartsfield-Jackson International Airport ASOS located in extreme northwest Clayton county recorded a wind gust of 71 mph. The Newton County 911 Center reported that a few trees were down west of Covington. A couple of roads were blocked from downed trees. The public estimated winds at 65 mph, but radar data did not indicate winds supportive of this speed. The Fayette County Emergency Management Director and the county 911 center reported that dozens of large trees were down between Fayetteville and Peachtree City to areas just south of Fayetteville. All lanes of Georgia Highway 54 were closed near Whitewater Creek and one lane of Georgia Highway 85 was blocked about three miles south of Fayetteville. The DeKalb County 911 Center reported that dozens of trees were down in the western part of the county near Decatur. The public reported that dozens of trees were blown down from Acworth, to Kennesaw, especially in the Red Top Mountain Estates located southwest of Acworth in the far northwest part of the county. Doppler base velocity wind data indicated inbound values in excess of 60 mph across much of the eastern two-thirds of the county. The Newton County 911 Center relayed a report of penny-sized hail west of Covington. The public observed nickel-sized hail northwest of Atlanta. Radar data supports that penny to nickel-sized hail likely fell further north around Sandy Springs as well. An amateur radio operator relayed a report that numerous large trees were down across the Georgia Tech campus, just northwest of Atlanta. Some of the trees were up to two feet in diameter. A wind gust of 71 mph was measured at Atlanta's Hartsfield-Jackson International Airport just along the Fulton/Clayton county line at 739 pm EDT. The Cherokee County Emergency Management Director reported that thunderstorm downburst winds blew down dozens of trees on the east and north side of Lake Allatoona. A number of trees were also down between the eastern side of Lake Allatoona and Woodstock as well. Several campers were damaged at the Sweetwater Campground and one person at the campground sustained non-life threatening injuries when a large tree fell on their tent. In addition, playground equipment was damaged at a park in Woodstock from a large downed tree. Several roads were blocked from downed trees and many power lines and also down in the area. Up to 25,000 people in the area were left without power for several hours following the storm. The Cherokee Tribune reported that up to 134 homes in the area sustained at least minor damage from wind and/or lightning. An amateur radio operator reported penny-sized hail in the Kennesaw area. The public observed penny-sized hail on the east side of Kennesaw at exit three on I-575, and a storm spotter observed hail in the far northeastern part of the county at the intersection of Johnson Ferry and Roswell Roads.