An upper-level disturbance continued to track from the south central U.S. toward the eastern U.S. on the north side of a large subtropical ridge in the western Gulf of Mexico.  Scattered thunderstorms developed during the early and mid-afternoon across northwest and north central Georgia and then moved southeast across north and central Georgia during the afternoon and evening.  The disturbance was slightly stronger and the air mass slightly more unstable than on the 11th.  Thus, strong to severe thunderstorms became somewhat more numerous than the previous day, but remained scattered in the north and just isolated in central areas.

Thunderstorm Wind in BANKS, GEORGIA
From 11-JUN-09 14:32:00 to 11-JUN-09 15:02:00 (EST-5)
Location: LULA
Magnitude: 50.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Banks County Emergency Management Director reported that at least 25 trees were blown down across the county, several blocking roads, and one downed tree causing significant damage to the roof of a home.  Widespread power outages were observed and a number of traffic signals were rendered inoperative as a result.  Some railroad crossing arms were also torn off by the strong winds gusts.

Thunderstorm Wind in GILMER, GEORGIA
From 11-JUN-09 12:40:00 to 11-JUN-09 13:03:00 (EST-5)
Location: ELLIJAY
Magnitude: 50.00 EG
Property damage: 45.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Gilmer County Emergency Management Director reported that at least 40 trees were either uprooted or twisted across the county.  Several power lines were also down.  The roof was also ripped off an old fire station near Ellijay that had been converted into a parks and recreational building.  Pea-sized hail was also observed during the thunderstorm.

Hail in COBB, GEORGIA
From 11-JUN-09 17:36:00 to 11-JUN-09 17:40:00 (EST-5)
Location: MABLETON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public observed penny-sized hail near Six Flags and the Fulton county line, or about eight miles west to west-northwest of Atlanta.

Hail in DODGE, GEORGIA
From 11-JUN-09 19:00:00 to 11-JUN-09 19:20:00 (EST-5)
Location: EASTMAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public observed quarter-sized hail around Eastman.  The Dodge County 911 Center observed pea-sized hail in Eastman.  Radar data suggests that penny to nickel-sized hail likely fell from Eastman to approximately six miles east-northeast of Eastman.

Hail in FULTON, GEORGIA
From 11-JUN-09 14:40:00 to 11-JUN-09 15:07:00 (EST-5)
Location: ATLANTA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur radio operators relayed reports of nickel-sized hail near the Downtown Connector, Interstate 75/85, and Freedom Parkway.  The public observed penny-sized hail in the western part of the county near Six Flags.  The public also observed pea-sized hail in downtown Atlanta.  Wind gusts near 40 mph also blew over traffic barrels and caused minor damage to hanging plastic banners.

Thunderstorm Wind in FULTON, GEORGIA
From 12-JUN-09 14:40:00 to 12-JUN-09 14:53:00 (EST-5)
Location: ATLANTA
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Fulton County Emergency Management Director reported that several trees were down in the central part of the county.  Radar data indicates that most of this likely occurred between Six Flags and just northwest of East Point.  A tree fell on a vehicle trapping two people inside.  No injuries were reported.

Lightning in WHITFIELD, GEORGIA
From 11-JUN-09 12:15:00 to 11-JUN-09 12:15:00 (EST-5)
Location: DALTON
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

The Daily Citizen of Dalton reported that lightning caused serious injuries to a horse located at a private residence on Charlotte Drive in Dalton.  The lightning struck a tree next to which the horse was huddled during the thunderstorm.

Thunderstorm Wind in WHITFIELD, GEORGIA
From 11-JUN-09 12:04:00 to 11-JUN-09 12:08:00 (EST-5)
Location: TUNNEL HILL
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Whitfield County Emergency Management Director reported that at least seven trees were blown down around Tunnel Hill.  One of the trees fell on a house on Tunnel-Hill Varnell Road causing significant damage to the structure.  Some power lines and power poles were also down in the area.