Severe thunderstorms associated with a bow echo and separate Derecho caused widespread wind damage and a few marginally severe hail reports during the evening and overnight hours of May 27th.  The storms severely impacted Shelby County.  Winds downed over 480 trees across the county, with over 100 buildings damaged (many from falling trees).  Over 180,000 people were without power.  It took over a week for all power to be restored.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 22:05:00 to 27-MAY-17 22:10:00 (CST-6)
Location: MEMPHIS
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Sixty-nine mile per hour gust measured in downtown Memphis.

Thunderstorm Wind in MCNAIRY, TENNESSEE
From 27-MAY-17 23:05:00 to 27-MAY-17 23:15:00 (CST-6)
Location: MICHIE
Magnitude: 55.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Tree down on a house in Highway 22 in Michie.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 22:12:00 to 27-MAY-17 22:15:00 (CST-6)
Location: (MEM)MEMPHIS INTL AR
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Sixty-one mile per hour gust at Memphis International.

Thunderstorm Wind in TIPTON, TENNESSEE
From 27-MAY-17 21:40:00 to 27-MAY-17 21:45:00 (CST-6)
Location: FLATWOOD
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Several poles down along Double bridges road near Munford.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 22:05:00 to 27-MAY-17 22:15:00 (CST-6)
Location: CORDOVA
Magnitude: 65.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

External warning siren destroyed at Bazemore Road and Forest Hill Irene.

Thunderstorm Wind in MADISON, TENNESSEE
From 27-MAY-17 21:45:00 to 27-MAY-17 21:50:00 (CST-6)
Location: DENMARK
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees down and uprooted.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 21:50:00 to 27-MAY-17 22:00:00 (CST-6)
Location: MEMPHIS DEWITT SPAIN
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Tractor trailer overturned on the Hernando Desoto I-40 bridge.

Hail in MADISON, TENNESSEE
From 27-MAY-17 21:52:00 to 27-MAY-17 21:55:00 (CST-6)
Location: EAST UNION
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in WEAKLEY, TENNESSEE
From 27-MAY-17 18:05:00 to 27-MAY-17 18:15:00 (CST-6)
Location: HILLSIDE
Magnitude: 55.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees down county wide. Fifteen to twenty roads temporarily blocked.

Thunderstorm Wind in HENRY, TENNESSEE
From 27-MAY-17 18:20:00 to 27-MAY-17 18:30:00 (CST-6)
Location: SOUTH MIDWAY
Magnitude: 55.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees down on roadways across Henry County, including Antioch, Rowe School road, and Old Paris Murray road.

Thunderstorm Wind in HENRY, TENNESSEE
From 27-MAY-17 18:25:00 to 27-MAY-17 18:35:00 (CST-6)
Location: MANLYVILLE
Magnitude: 55.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree fell on vehicle on Highway 69A between Springville and Big Sandy.

Thunderstorm Wind in CARROLL, TENNESSEE
From 27-MAY-17 18:43:00 to 27-MAY-17 18:50:00 (CST-6)
Location: BRUCETON
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large limbs as well as a large tree down. Winds estimated at 60+ mph.

Thunderstorm Wind in HENDERSON, TENNESSEE
From 27-MAY-17 21:56:00 to 27-MAY-17 22:05:00 (CST-6)
Location: BARGERTON
Magnitude: 55.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and power lines down across central and northern sections of Henderson County.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 22:00:00 to 27-MAY-17 22:10:00 (CST-6)
Location: NORTH
Magnitude: 65.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Large tree down on East Parkway near Sam Cooper Blvd.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 21:55:00 to 27-MAY-17 22:05:00 (CST-6)
Location: FRAYSER
Magnitude: 70.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Partial building collapse and gas leak at the 100 block of Harbor Circle on Mud Island just north of downtown Memphis.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 22:07:00 to 27-MAY-17 22:15:00 (CST-6)
Location: SHELBY FARMS
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Large satellite dish blown off of the roof of the Memphis office of Emergency Management.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 22:00:00 to 27-MAY-17 22:10:00 (CST-6)
Location: BINGHAMTON
Magnitude: 70.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Dollar General Store at 2980 Summer Ave received 50 percent of roof collapse.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 22:00:00 to 27-MAY-17 22:10:00 (CST-6)
Location: BERCLAIR
Magnitude: 70.00 EG
Property damage: 9.00M
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and power-lines down countywide.  Several of them on cars. Many buildings damaged by falling trees.  Over 180,000 people without power.

Thunderstorm Wind in DECATUR, TENNESSEE
From 27-MAY-17 19:20:00 to 27-MAY-17 19:30:00 (CST-6)
Location: PARSONS
Magnitude: 55.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and power lines down across the county. Several roads blocked.

Hail in GIBSON, TENNESSEE
From 27-MAY-17 20:18:00 to 27-MAY-17 20:23:00 (CST-6)
Location: HUMBOLDT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in GIBSON, TENNESSEE
From 27-MAY-17 20:30:00 to 27-MAY-17 20:35:00 (CST-6)
Location: MEDINA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in OBION, TENNESSEE
From 27-MAY-17 17:55:00 to 27-MAY-17 18:05:00 (CST-6)
Location: SPOUT SPGS
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Trees and power lines down in Obion County. especially along Highway 22 from Union City to Samburg. Trees are also down in Clayton and Woodland Mills.

Thunderstorm Wind in OBION, TENNESSEE
From 27-MAY-17 18:00:00 to 27-MAY-17 18:10:00 (CST-6)
Location: MASON HALL
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Trees and power lines down.

Thunderstorm Wind in SHELBY, TENNESSEE
From 27-MAY-17 21:47:00 to 27-MAY-17 21:55:00 (CST-6)
Location: WEST UNION
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Tree down on trailer where one person was trapped for a short period of time and suffered minor injuries.