A series of short waves moving through an unseasonably strong northwesterly upper-level flow pattern brought several rounds of strong to severe thunderstorms across north and central Georgia. The first round swept through in the early morning hours producing large swathes of wind damage and a few reports of small to moderate size hail. Heavy rainfall also produced isolated flash flooding in portions of north Georgia.

Thunderstorm Wind in MORGAN, GEORGIA
From 21-JUL-18 06:24:00 to 21-JUL-18 06:35:00 (EST-5)
Location: MADISON MUNI ARPT
Magnitude: 50.00 EG
Property damage: 4.00K
Reported by: 911 Call Center

The Morgan County 911 center reported trees blown down from Bostwick Road and Sandy Creek Road north of Madison to around mile maker 108 on I-20 east of Madison.

Thunderstorm Wind in COWETA, GEORGIA
From 21-JUL-18 06:45:00 to 21-JUL-18 06:55:00 (EST-5)
Location: NEWNAN
Magnitude: 50.00 EG
Property damage: 25.00K
Reported by: Emergency Manager

The Coweta County Emergency Manager reported trees blown down in Newnan around Mansour Circle. One tree fell onto a house, no injuries were reported.

Hail in FORSYTH, GEORGIA
From 21-JUL-18 05:05:00 to 21-JUL-18 05:15:00 (EST-5)
Location: DREW
Magnitude: 1.00 
Reported by: Public

The public reported quarter size hail in the Sawnee View Farms neighborhood near Bethelview Road and Sawnee View Drive.

Hail in GWINNETT, GEORGIA
From 21-JUL-18 05:15:00 to 21-JUL-18 05:25:00 (EST-5)
Location: SUGAR HILL
Magnitude: 1.00 
Reported by: Public

The public reported quarter size hail at the Buford Dam Park.

Lightning in CHEROKEE, GEORGIA
From 21-JUL-18 04:59:00 to 21-JUL-18 04:59:00 (EST-5)
Location: CHEROKEE
Property damage: 1.00K
Reported by: Emergency Manager

The Cherokee County Emergency Manager reported a house struck by lightning on Bridge Mill Avenue.

Thunderstorm Wind in DAWSON, GEORGIA
From 21-JUL-18 02:30:00 to 21-JUL-18 02:55:00 (EST-5)
Location: AMICALOLA
Magnitude: 60.00 EG
Property damage: 25.00K
Reported by: Emergency Manager

The Dawson County Emergency Manager reported multiple trees blown down across the east side of the county from Amicalola Falls State Park to an area near New Bethel Church Road and Highway 136.

Thunderstorm Wind in LUMPKIN, GEORGIA
From 21-JUL-18 02:55:00 to 21-JUL-18 03:20:00 (EST-5)
Location: ETOWAH
Magnitude: 60.00 EG
Property damage: 50.00K
Reported by: 911 Call Center

The Lumpkin County 911 center reported numerous trees blown down across the southwest and south end of the county, from the Castleberry Bridge Road and Auraria Road area southwest of Dahlonega to the River Trace Drive and 7 Mile Hill Road area south of Dahlonega. A tree fell onto a house along River Trace Drive, no injuries were reported.

Thunderstorm Wind in MURRAY, GEORGIA
From 21-JUL-18 03:48:00 to 21-JUL-18 04:10:00 (EST-5)
Location: ORAN
Magnitude: 60.00 EG
Property damage: 75.00K
Reported by: Emergency Manager

The Murray County Emergency Manager reported numerous trees blown down across the west side of Chatsworth from the Wildwood Estates neighborhood to the Springdale Estates neighborhood. A few homes received damage from falling trees. On Mary Avenue a tree fell onto a home trapping a family of 4 inside. Three family members were transported to the hospital with injuries, including a laceration to the head.

Thunderstorm Wind in FANNIN, GEORGIA
From 21-JUL-18 01:48:00 to 21-JUL-18 02:05:00 (EST-5)
Location: CURTIS
Magnitude: 50.00 EG
Property damage: 4.00K
Reported by: Emergency Manager

The Fannin County Emergency Manager reported a few trees blown down from around North Toccoa River Road and Curtis Switch Road north of Blue Ridge to Highway 515 near the Gilmer County line southwest of Blue Ridge.

Thunderstorm Wind in FULTON, GEORGIA
From 21-JUL-18 05:16:00 to 21-JUL-18 05:30:00 (EST-5)
Location: WARSAW
Magnitude: 50.00 EG
Property damage: 20.00K
Reported by: 911 Call Center

The Fulton County 911 center and the public reported numerous trees blown down across far northeastern Fulton County in the Johns Creek area.

Thunderstorm Wind in DE KALB, GEORGIA
From 21-JUL-18 05:50:00 to 21-JUL-18 05:55:00 (EST-5)
Location: BELVEDERE PARK
Magnitude: 45.00 EG
Property damage: 2.00K
Reported by: Emergency Manager

The DeKalb County Emergency Manager reported a tree blown down onto a power line around the intersection of Glenwood Road and Columbia Drive.

Thunderstorm Wind in FLOYD, GEORGIA
From 21-JUL-18 04:45:00 to 21-JUL-18 04:55:00 (EST-5)
Location: PINSON
Magnitude: 55.00 EG
Property damage: 4.00K
Reported by: Broadcast Media

The local broadcast media reported power poles and trees snapped in the 5000 block of Calhoun Road NE.

Thunderstorm Wind in GILMER, GEORGIA
From 21-JUL-18 02:10:00 to 21-JUL-18 02:25:00 (EST-5)
Location: ELDERS
Magnitude: 74.00 EG
Property damage: 150.00K
Reported by: NWS Storm Survey

A National Weather Service survey team found that very strong thunderstorm winds caused significant damage across southwestern Gilmer County along a path around 5 miles long and 3 miles wide. The damage began near the intersection of Highway 76 and Crossroads Church Road and extended east southeast to around the intersection of Old Highway 5 and Howard Simmons Road. Numerous trees and power lines were blown down or snapped with several falling on homes and other structures. Significant damage was observed in the Coosawattee River Resort area. No injuries were reported.

Flash Flood in GILMER, GEORGIA
From 21-JUL-18 04:20:00 to 21-JUL-18 09:00:00 (EST-5)
Location: KIKER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Gilmer County Emergency Management reported water and mud inside the American Legion Post off Legion Road. Radar estimates indicate up to 3 inches of rain occurred in less than two hours.

Flash Flood in LUMPKIN, GEORGIA
From 21-JUL-18 05:00:00 to 21-JUL-18 09:00:00 (EST-5)
Location: NEW BRIDGE
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lumpkin County Emergency Management reported River Trace Drive was washed out due to flash flooding. Radar estimates indicate rainfall amounts of around 3 inches, with locally higher amounts, occurred in this area in less than 3 hours.

Thunderstorm Wind in DAWSON, GEORGIA
From 21-JUL-18 04:05:00 to 21-JUL-18 04:10:00 (EST-5)
Location: EMMA
Magnitude: 60.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Dawson County EMA reported numerous trees down, some on structures, along North Seed Tick Road east of Dawsonville. At least nine homes received damage from falling trees, three with major damage. One falling tree drove a fence post through a water main on N. Seed Tick Road. No injuries were reported.

Thunderstorm Wind in CHEROKEE, GEORGIA
From 21-JUL-18 04:40:00 to 21-JUL-18 04:50:00 (EST-5)
Location: WALESKA
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A portion of a roof was damaged in the 1000 block of Ammons Road. Time estimated from radar.

Thunderstorm Wind in FORSYTH, GEORGIA
From 21-JUL-18 05:10:00 to 21-JUL-18 05:25:00 (EST-5)
Location: CUMMING
Magnitude: 60.00 EG
Property damage: 125.00K
Reported by: Emergency Manager

Multiple trees and power lines blown down from just west of Cumming, along Chamblee Gap Road, Greystone Place and Hickory Court. Several trees on cars in this area. The path of damage extended south-southeast to near Union Road and Brandywine Circle, where trees were on houses in this area.  In the Sawnee View Farms neighborhood over two dozen trees were blown down.

Thunderstorm Wind in HALL, GEORGIA
From 21-JUL-18 04:45:00 to 21-JUL-18 04:55:00 (EST-5)
Location: NEW HOLLAND
Magnitude: 50.00 EG
Property damage: 4.00K
Reported by: Broadcast Media

The local broadcast media reported trees and power lines blown down across the roadway on Highway 129 around South Enota Drive.

Thunderstorm Wind in GWINNETT, GEORGIA
From 21-JUL-18 05:30:00 to 21-JUL-18 05:40:00 (EST-5)
Location: SUGAR HILL
Magnitude: 50.00 EG
Property damage: 100.00K
Reported by: Emergency Manager

The Gwinnett County Emergency Manager reported numerous trees and power lines blown down across the northwest side of the county from Buford to Lilburn. Trees were blown down onto at least three homes and one vehicle. No injuries were reported.

Thunderstorm Wind in WALTON, GEORGIA
From 21-JUL-18 06:05:00 to 21-JUL-18 06:25:00 (EST-5)
Location: CAMPTON
Magnitude: 55.00 EG
Property damage: 50.00K
Reported by: 911 Call Center

The Walton County 911 center reported numerous trees and power lines blown down across the county.

Hail in PICKENS, GEORGIA
From 21-JUL-18 04:30:00 to 21-JUL-18 04:40:00 (EST-5)
Location: RUDEN
Magnitude: 1.00 
Reported by: Amateur Radio

An amateur radio operator reported quarter size hail in the Hunters Ridge subdivision.

Thunderstorm Wind in CHEROKEE, GEORGIA
From 21-JUL-18 04:50:00 to 21-JUL-18 05:00:00 (EST-5)
Location: OPHIR
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Multiple trees reported down on power lines near the intersection of Hightower Road and Yellow Creek Road. Time estimated from radar.

Hail in PICKENS, GEORGIA
From 21-JUL-18 04:35:00 to 21-JUL-18 04:45:00 (EST-5)
Location: JASPER PICKENS CO AR
Magnitude: 1.00 
Reported by: Amateur Radio

An amateur radio operator reported quarter size hail on Cornerstone Drive near Jasper.

Hail in CHEROKEE, GEORGIA
From 21-JUL-18 04:49:00 to 21-JUL-18 05:00:00 (EST-5)
Location: BALL GROUND
Magnitude: 1.00 
Reported by: Public

The public reported quarter size hail in the 1500 block of Old Canton Road.

Thunderstorm Wind in FORSYTH, GEORGIA
From 21-JUL-18 05:00:00 to 21-JUL-18 05:10:00 (EST-5)
Location: DREW
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Visual confirmation of a gas canopy being blown over along Highway 20 and Bethelview Road, in Cumming. Time estimated from radar.

Thunderstorm Wind in UNION, GEORGIA
From 21-JUL-18 01:50:00 to 21-JUL-18 02:05:00 (EST-5)
Location: BLAIRSVILLE
Magnitude: 60.00 EG
Property damage: 25.00K
Reported by: Emergency Manager

The Union County Emergency Manager reported more than two dozen trees blown down across the county, mainly south and east of Blairsville to the Union/White county line.