An upper level disturbance and associated surface frontal system, moving across the Ohio and Tennessee Valleys, caused numerous thunderstorms across Central Alabama over a two day period.  Many of the storms produced damaging winds, large hail, and locally heavy rainfall.

Thunderstorm Wind in SHELBY, ALABAMA
From 20-MAY-10 18:00:00 to 20-MAY-10 18:00:00 (CST-6)
Location: TURNER
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A 61 mph wind gust was reported at Fox Valley, at the intersection of CR-17 and 1st Avenue in Alabaster.

Flood in JEFFERSON, ALABAMA
From 20-MAY-10 18:00:00 to 20-MAY-10 19:30:00 (CST-6)
Location: THOMAS JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A prolonged period of moderate to heavy rainfall led to flooding at several locations around the city of Birmingham. Emergency water rescues were performed at 9th Ave. North and 22nd Street North, and at Carraway Blvd. and 26th Street.  Street flooding was reported on Arkadelphia Road near the railroad tracks, and on Happy Hollow Road in Trussville.

Thunderstorm Wind in JEFFERSON, ALABAMA
From 20-MAY-10 18:27:00 to 20-MAY-10 18:27:00 (CST-6)
Location: (BHM)BIRMINGHAM ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Peak winds reached 62 mph at the Birmingham Airport.

Lightning in JEFFERSON, ALABAMA
From 20-MAY-10 18:26:00 to 20-MAY-10 18:26:00 (CST-6)
Location: MAGELLA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A person was reportedly injured by a lightning strike at a shopping center near the intersection of Greensprings Highway and Valley Avenue.

Thunderstorm Wind in MONTGOMERY, ALABAMA
From 20-MAY-10 18:45:00 to 20-MAY-10 18:45:00 (CST-6)
Location: MITYLENE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and power lines were blown down near Carmichael Road, in the Woodmere area of Montgomery.

Thunderstorm Wind in BULLOCK, ALABAMA
From 20-MAY-10 19:40:00 to 20-MAY-10 19:40:00 (CST-6)
Location: PINE GROVE
Magnitude: 70.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A suspected microburst destroyed 5 mobile homes, damaged 3 others, damaged 2 site built homes, destroyed 4 outbuildings, caused a tree to fall on and extensively damage a car, and destroyed 6 quail houses.  The damage occurred on Antioch Church Road, about a mile west of AL-51, south of the Midway community in the southeastern portion of Bullock County.

Thunderstorm Wind in SHELBY, ALABAMA
From 20-MAY-10 18:44:00 to 20-MAY-10 18:44:00 (CST-6)
Location: WILSONVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Large tree limbs were blown down across a large section of Wilsonville.

Thunderstorm Wind in PERRY, ALABAMA
From 21-MAY-10 13:50:00 to 21-MAY-10 13:50:00 (CST-6)
Location: MARION
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees were blown down on CR-7, north of Marion.

Hail in TUSCALOOSA, ALABAMA
From 20-MAY-10 15:35:00 to 20-MAY-10 15:35:00 (CST-6)
Location: ROSEDALE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in TUSCALOOSA, ALABAMA
From 20-MAY-10 15:48:00 to 20-MAY-10 15:48:00 (CST-6)
Location: RALPH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in TUSCALOOSA, ALABAMA
From 20-MAY-10 16:05:00 to 20-MAY-10 16:05:00 (CST-6)
Location: HOLT JCT
Magnitude: 60.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Four apartment buildings within an apartment complex were heavily damaged when trees were blown down onto them.

Hail in TUSCALOOSA, ALABAMA
From 20-MAY-10 16:11:00 to 20-MAY-10 16:11:00 (CST-6)
Location: COTTONDALE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flash Flood in TUSCALOOSA, ALABAMA
From 20-MAY-10 16:30:00 to 20-MAY-10 19:00:00 (CST-6)
Location: RIVER VIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Water was reported flowing over the bridge in the Brookhaven area of Tuscaloosa, just off of US-82.  Eight inches of water was reported in the University Mall area, near the intersection of US-82 and 15th Street.

Thunderstorm Wind in WINSTON, ALABAMA
From 21-MAY-10 06:05:00 to 21-MAY-10 06:05:00 (CST-6)
Location: HALEYVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees were blown down and blocked Wakefield Road, near AL-13 northwest of Haleyville.

Lightning in WINSTON, ALABAMA
From 21-MAY-10 06:14:00 to 21-MAY-10 06:14:00 (CST-6)
Location: HALEYVILLE
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A lightning strike set fire to a warehouse building in downtown Haleyville, resulting in a total loss of the building.

Thunderstorm Wind in SHELBY, ALABAMA
From 20-MAY-10 17:45:00 to 20-MAY-10 17:45:00 (CST-6)
Location: GENERY
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several trees were blown down at CR-13 and Environs Parkway, in the western portion of the county.

Thunderstorm Wind in JEFFERSON, ALABAMA
From 20-MAY-10 18:03:00 to 20-MAY-10 18:03:00 (CST-6)
Location: HOMEWOOD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Sixty to 70 mph winds were estimated at the WIAT-TV studios, atop Red Mountain in Birmingham.

Thunderstorm Wind in WALKER, ALABAMA
From 21-MAY-10 06:53:00 to 21-MAY-10 06:53:00 (CST-6)
Location: CARONA
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down onto AL-18, in the Corona community.

Thunderstorm Wind in PICKENS, ALABAMA
From 20-MAY-10 14:09:00 to 20-MAY-10 14:09:00 (CST-6)
Location: CARROLLTON
Magnitude: 40.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Stores in downtown Carrollton had merchandise blown down the street.

Thunderstorm Wind in PICKENS, ALABAMA
From 20-MAY-10 14:32:00 to 20-MAY-10 14:32:00 (CST-6)
Location: GORDO
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Several large limbs were blown down onto AL-86, near Gordo.

Hail in TUSCALOOSA, ALABAMA
From 20-MAY-10 14:55:00 to 20-MAY-10 14:55:00 (CST-6)
Location: RALPH
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in TUSCALOOSA, ALABAMA
From 20-MAY-10 15:12:00 to 20-MAY-10 15:39:00 (CST-6)
Location: FOSTERS
Magnitude: 1.75 
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Public

A swath of hail, ranging from the size of nickels up to the size of golf balls, was reported from the Fosters community northeastward into the southwestern portions of the city of Tuscaloosa.  Several vehicles were damaged by golf ball sized hail at the intersection of US-11 and Gainsville Road, just east of Fosters.

Thunderstorm Wind in TUSCALOOSA, ALABAMA
From 20-MAY-10 15:15:00 to 20-MAY-10 15:15:00 (CST-6)
Location: FOSTERS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down at the intersection of US-11 and Gainsville Road, in the Fosters community.

Thunderstorm Wind in TUSCALOOSA, ALABAMA
From 20-MAY-10 15:39:00 to 20-MAY-10 15:41:00 (CST-6)
Location: TAYLORVILLE
Magnitude: 60.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Damage was reported in the Skyland Blvd. area of the city of Tuscaloosa.  An auto parts store suffered the collapse of a roof, which subsequently flooded the inside of the store.  Roof damage was also reported to portions of the McFarland Mall shopping center, with debris scattered around the parking lot.  A Sam's Club and Walmart store across the street from the mall were also damaged, and several traffic lights in the area were blown down.

Thunderstorm Wind in ST. CLAIR, ALABAMA
From 20-MAY-10 19:14:00 to 20-MAY-10 19:14:00 (CST-6)
Location: ST CLAIR
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down, including one on a car, near the intersection of US-11 and AL-23.

Thunderstorm Wind in TALLADEGA, ALABAMA
From 20-MAY-10 19:15:00 to 20-MAY-10 19:15:00 (CST-6)
Location: ST IVES
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were blown down near the condos at Alpine Bay Resort.

Thunderstorm Wind in TALLAPOOSA, ALABAMA
From 20-MAY-10 19:44:00 to 20-MAY-10 19:44:00 (CST-6)
Location: REELTOWN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees were blown down near the Reeltown VFD, and some nearby baseball field dugouts were damaged by winds.

Flash Flood in MARION, ALABAMA
From 21-MAY-10 07:00:00 to 21-MAY-10 08:00:00 (CST-6)
Location: BARNESVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A portion of CR-122, north of Hamilton, experienced a short period of flash flooding.

Thunderstorm Wind in JEFFERSON, ALABAMA
From 21-MAY-10 08:30:00 to 21-MAY-10 08:30:00 (CST-6)
Location: DOLOMITE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down at two locations in the city of Hueytown.

Thunderstorm Wind in JEFFERSON, ALABAMA
From 21-MAY-10 08:30:00 to 21-MAY-10 08:30:00 (CST-6)
Location: WOODLAWN
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down in downtown Birmingham.

Flash Flood in JEFFERSON, ALABAMA
From 21-MAY-10 09:00:00 to 21-MAY-10 12:00:00 (CST-6)
Location: MIDFIELD
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several areas in the southwestern suburbs of Birmingham became flooded due to heavy rain.  The hardest hit areas included Parker Spring Street and Bessemer Street in Brighton, 9th Avenue at AL-150 and Dartmouth Avenue in Bessemer, and Perimeter Way at McCalla Road in McCalla.  One car became submerged in Brighton.

Hail in GREENE, ALABAMA
From 21-MAY-10 13:25:00 to 21-MAY-10 13:25:00 (CST-6)
Location: BRAGGVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Hail in MARENGO, ALABAMA
From 21-MAY-10 13:50:00 to 21-MAY-10 13:50:00 (CST-6)
Location: DEMOPOLIS MUNI ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MARENGO, ALABAMA
From 21-MAY-10 14:00:00 to 21-MAY-10 14:00:00 (CST-6)
Location: DEMOPOLIS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MARENGO, ALABAMA
From 21-MAY-10 14:30:00 to 21-MAY-10 14:30:00 (CST-6)
Location: LINDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in SHELBY, ALABAMA
From 20-MAY-10 17:48:00 to 20-MAY-10 17:48:00 (CST-6)
Location: ALABASTER
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were blown down at 1st Street South and Old Highway 31, in Alabaster.