Showers and thunderstorms developed across Middle Tennessee throughout the day on May 20, with numerous reports of large hail and damaging winds as well as some flash flooding.

Hail in COFFEE, TENNESSEE
From 20-MAY-18 14:51:00 to 20-MAY-18 14:51:00 (CST-6)
Location: TULLAHOMA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A Facebook video showed dime sized hail falling on Old Estill Springs Road.

Thunderstorm Wind in ROBERTSON, TENNESSEE
From 20-MAY-18 15:50:00 to 20-MAY-18 15:50:00 (CST-6)
Location: ADAMS
Magnitude: 45.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Tree down at the intersection of Highway 41 and Johnson Spring Road.

Thunderstorm Wind in SUMNER, TENNESSEE
From 20-MAY-18 17:50:00 to 20-MAY-18 17:50:00 (CST-6)
Location: ROCK BRIDGE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees and power lines were blown down.

Thunderstorm Wind in MONTGOMERY, TENNESSEE
From 20-MAY-18 17:55:00 to 20-MAY-18 17:55:00 (CST-6)
Location: HILLTOP
Magnitude: 45.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several tree limbs were blown down in the area of Bobby Road and Cumberland Heights.

Hail in MONTGOMERY, TENNESSEE
From 20-MAY-18 05:30:00 to 20-MAY-18 05:30:00 (CST-6)
Location: SAILORS REST
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Quarter size hail was reported along Highway 149 in Montgomery County.

Thunderstorm Wind in GRUNDY, TENNESSEE
From 20-MAY-18 13:20:00 to 20-MAY-18 13:20:00 (CST-6)
Location: ELKHEAD
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees were blown down across western portions of the county near the Grundy/Coffee County line.

Thunderstorm Wind in MACON, TENNESSEE
From 20-MAY-18 18:50:00 to 20-MAY-18 18:50:00 (CST-6)
Location: LAFAYETTE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines were blown down across western and central Macon County.

Flash Flood in SUMNER, TENNESSEE
From 20-MAY-18 18:15:00 to 20-MAY-18 18:15:00 (CST-6)
Location: FOUNTAIN HEAD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Three swift water rescues were conducted by emergency personnel across eastern Sumner County.

Thunderstorm Wind in MACON, TENNESSEE
From 20-MAY-18 19:00:00 to 20-MAY-18 19:00:00 (CST-6)
Location: WILLIAMS
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was blown down on Cave Hollow Road east of Akersville Road.

Thunderstorm Wind in DAVIDSON, TENNESSEE
From 20-MAY-18 16:00:00 to 20-MAY-18 16:20:00 (CST-6)
Location: OAK HILL
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe 8 mile long by 4 mile wide downburst spread west-southwestward and caused widespread wind damage in and around Belle Meade, West Nashville, and Bellevue. Numerous trees and power lines were blown down with several roadways blocked, including Belmont Boulevard, Page Road, Blackburn Avenue, Wildwood Avenue, Park Avenue, 12th Avenue North, and Belle Meade Boulevard. A tree fell onto a home on Percy Warner Boulevard, and another tree fell onto a house on Cross Timbers Drive. A tree also fell and crushed a car at an apartment complex in the 800 block of Bellevue Road. Part of the awning at a gas station on Highway 70 at Old Hickory Boulevard was blown off. Power was knocked out to roughly 7,000 customers. Winds were estimated up to 65 mph.

Hail in ROBERTSON, TENNESSEE
From 20-MAY-18 16:28:00 to 20-MAY-18 16:38:00 (CST-6)
Location: SPRINGFIELD MUNI ARP
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in West Springfield reported pea to dime size hail fell for 10 minutes starting at 5:18 PM CDT, then hail up to quarter size fell for another 10 minutes along with very heavy rain and high winds.

Thunderstorm Wind in DICKSON, TENNESSEE
From 20-MAY-18 16:50:00 to 20-MAY-18 16:50:00 (CST-6)
Location: CHARLOTTE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were blown down on Highway 48.

Hail in DAVIDSON, TENNESSEE
From 20-MAY-18 16:55:00 to 20-MAY-18 16:55:00 (CST-6)
Location: GOODLETTSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A Facebook report indicated marble to quarter size hail fell in Goodlettsville.

Hail in DAVIDSON, TENNESSEE
From 20-MAY-18 17:00:00 to 20-MAY-18 17:00:00 (CST-6)
Location: GOODLETTSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A Facebook report and photo showed quarter size hail in Goodlettsville.

Flood in DAVIDSON, TENNESSEE
From 20-MAY-18 17:00:00 to 20-MAY-18 18:00:00 (CST-6)
Location: NEWSOM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Considerable street and parking lot flooding was reported around Bellevue.

Hail in DICKSON, TENNESSEE
From 20-MAY-18 16:07:00 to 20-MAY-18 16:07:00 (CST-6)
Location: POND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DAVIDSON, TENNESSEE
From 20-MAY-18 16:12:00 to 20-MAY-18 16:12:00 (CST-6)
Location: BORDEAUX
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A tSpotter Twitter report and photo showed quarter size hail near Bordeaux.

Hail in ROBERTSON, TENNESSEE
From 20-MAY-18 16:25:00 to 20-MAY-18 16:25:00 (CST-6)
Location: SPRINGFIELD MUNI ARP
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur radio operator reported quarter size hail on Airport Road near Springfield.

Thunderstorm Wind in ROBERTSON, TENNESSEE
From 20-MAY-18 16:12:00 to 20-MAY-18 16:12:00 (CST-6)
Location: SPRINGFIELD
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Social Media

Facebook photo showed a tree was blown down on a car at 408 Circle Drive in Springfield.

Flash Flood in MACON, TENNESSEE
From 20-MAY-18 19:00:00 to 20-MAY-18 20:00:00 (CST-6)
Location: CROSS RD
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Widespread flash flooding was reported across western and central Macon County with several homes flooded and numerous roads impassable due to high water. Westfork Creek Road was washed out. Two swift water rescues were conducted by emergency personnel.

Flood in ROBERTSON, TENNESSEE
From 20-MAY-18 17:00:00 to 20-MAY-18 18:00:00 (CST-6)
Location: KINNEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Considerable street and yard flooding was reported in parts of Springfield. The southbound lane of Memorial Blvd was flooded between 5th Avenue to 13th Avenue.

Hail in MONTGOMERY, TENNESSEE
From 20-MAY-18 15:55:00 to 20-MAY-18 15:55:00 (CST-6)
Location: EXCELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Montgomery County Emergency Management reported quarter size hail along Highway 12.