Just one day after a derecho brought widespread wind damage to Middle Tennessee, another complex of severe thunderstorms called a MCS (Mesoscale Convective System) developed across western Tennessee in the afternoon hours on May 4, then moved across southern Middle Tennessee during the evening hours. These storms once again produced widespread straight-line wind damage across Perry, Lewis, Wayne, Lawrence, and Giles Counties, and also dropped very large hail up to lime size in parts of Wayne County. Behind these storms, an uncommon feature called a wake low formed on the back edge of the rain shield across the Nashville metro area and surrounding counties, producing strong southeast winds of 40 to 60 mph for around one hour late in the evening. These winds, although well north of the severe thunderstorms along the Alabama border, nevertheless caused additional widespread wind damage from Lewis County northeastward to Wilson County.

Hail in PERRY, TENNESSEE
From 04-MAY-20 18:08:00 to 04-MAY-20 18:08:00 (CST-6)
Location: LINDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail up to quarter size fell on Airport Ridge Road.

Hail in WAYNE, TENNESSEE
From 04-MAY-20 19:18:00 to 04-MAY-20 19:18:00 (CST-6)
Location: LUTTS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golfball size hail was reported in Lutts.

Hail in PERRY, TENNESSEE
From 04-MAY-20 18:48:00 to 04-MAY-20 18:48:00 (CST-6)
Location: LINDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Quarter size hail was reported near Linden.

Hail in WAYNE, TENNESSEE
From 04-MAY-20 18:57:00 to 04-MAY-20 18:57:00 (CST-6)
Location: CLIFTON HASSELL ARPT
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two inch diameter hail was reported in the Beech Creek area.

Thunderstorm Wind in PERRY, TENNESSEE
From 04-MAY-20 19:00:00 to 04-MAY-20 19:00:00 (CST-6)
Location: PETERS LNDG
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

Numerous trees and power lines were blown down on Whiteoak Creek Road.

Thunderstorm Wind in WAYNE, TENNESSEE
From 04-MAY-20 19:15:00 to 04-MAY-20 19:15:00 (CST-6)
Location: WAYNESBORO
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Social Media

A large tree was uprooted on Hassell Street near the Town Square in downtown Waynesboro.

Hail in WAYNE, TENNESSEE
From 04-MAY-20 19:20:00 to 04-MAY-20 19:20:00 (CST-6)
Location: LUTTS
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A Facebook photo showed 2 inch diameter hail fell near Lutts.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:29:00 to 04-MAY-20 19:29:00 (CST-6)
Location: NEW HAVEN
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down onto a power line at Gravel Hill Road near Highway 64.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:35:00 to 04-MAY-20 19:35:00 (CST-6)
Location: SUMMERTOWN
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down across Buffalo Road near Highway 240. Many other trees were blown down across northern and northwestern Lawrence County.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:35:00 to 04-MAY-20 19:35:00 (CST-6)
Location: BARNESVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down across Highway 240 near Locker Road in Summertown.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:38:00 to 04-MAY-20 19:38:00 (CST-6)
Location: SUMMERTOWN
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down that blocked part of Highway 20.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:38:00 to 04-MAY-20 19:38:00 (CST-6)
Location: SUMMERTOWN
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down that blocked Railroad Bed Road in Summertown.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:33:00 to 04-MAY-20 19:33:00 (CST-6)
Location: HENRYVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Highway 240 was blocked by a fallen tree in Henryville.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:41:00 to 04-MAY-20 19:41:00 (CST-6)
Location: LAWRENCEBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Winds of 55 to 60 mph were reported on Mattoxtown Road in north Lawrenceburg.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:43:00 to 04-MAY-20 19:43:00 (CST-6)
Location: DUNN
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines were blown down at Virginia Drive and Highway 43.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:43:00 to 04-MAY-20 19:43:00 (CST-6)
Location: LAWRENCEBURG
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down across Springer Road in east Lawrenceburg and pea size hail was reported in west Lawrenceburg.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:44:00 to 04-MAY-20 19:44:00 (CST-6)
Location: LAWRENCEBURG ARPT
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down that blocked Weekly Creek Road at Miller Road east of Lawrenceburg.

Thunderstorm Wind in LAWRENCE, TENNESSEE
From 04-MAY-20 19:44:00 to 04-MAY-20 19:44:00 (CST-6)
Location: GUM SPGS
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down onto a car trapping a person inside at 1290 Crowder Road.

Thunderstorm Wind in GILES, TENNESSEE
From 04-MAY-20 19:57:00 to 04-MAY-20 19:57:00 (CST-6)
Location: PULASKI
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Social Media

Several power lines were blown down in Pulaski.

Thunderstorm Wind in GILES, TENNESSEE
From 04-MAY-20 20:05:00 to 04-MAY-20 20:05:00 (CST-6)
Location: MINOR HILL
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous trees and power lines were blown down across Giles County with approximately 40 roads blocked.

High Wind in LEWIS, TENNESSEE
From 04-MAY-20 20:00:00 to 04-MAY-20 21:00:00 (CST-6)
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A wake low pressure area on the back side of the precipitation associated with the severe thunderstorms across southern Middle Tennessee caused strong to severe southeast winds of 40 to 60 mph across Lewis County. Several trees were blown down around Hohenwald.

High Wind in WILLIAMSON, TENNESSEE
From 04-MAY-20 20:15:00 to 04-MAY-20 21:15:00 (CST-6)
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A wake low pressure area on the back side of the precipitation associated with the severe thunderstorms across southern Middle Tennessee caused strong to severe southeast winds of 40 to 60 mph across Williamson County. Numerous trees and power lines were blown down in Fairview, Franklin, Nolensville, and Brentwood with several roads blocked.

High Wind in WILSON, TENNESSEE
From 04-MAY-20 20:30:00 to 04-MAY-20 21:15:00 (CST-6)
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A wake low pressure area on the back side of the precipitation associated with the severe thunderstorms across southern Middle Tennessee caused strong to severe southeast winds of 40 to 60 mph across Wilson County. Numerous trees, power lines, and fences were blown down in Green Hill, Mount Juliet, and Lebanon. Some roads that were blocked by fallen trees included Saundersville Road near the NWS Nashville office; Buffalo Trail, Noel Drive, and Dallas Drive in Mount Juliet; and Interstate 40 eastbound in Lebanon. One tree fell onto a car on North Greenhill Road in Mount Juliet.

High Wind in DAVIDSON, TENNESSEE
From 04-MAY-20 20:30:00 to 04-MAY-20 21:15:00 (CST-6)
Magnitude: 52.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A wake low pressure area on the back side of the precipitation associated with the severe thunderstorms across southern Middle Tennessee caused strong to severe southeast winds of 40 to 60 mph across Davidson County. Numerous trees, power lines, and fences were blown down in Goodlettsville, Old Hickory, Hermitage, East Nashville, Green Hills, 12 South, and other areas of Nashville with numerous roads blocked. One tree limb fell through the roof of a home in East Nashville. Power was knocked out to around 15,000 customers. The Nashville International Airport ASOS measured a peak wind gust of 47 mph, along with a rapid sea level pressure fall of 9.4 mb between 9pm to 10pm CDT followed by a sharp sea level pressure rise of 3.4 mb from 10pm CDT to 11pm CDT.