Sparked by the remnants of Hurricane Isaac -- which still maintained extra-tropical characteristics nearly 5 days after making landfall along the Gulf Coast. Thunderstorms erupted during the mid afternoon hours across northwest Alabama and tracked east and southeast across the rest of north Alabama through early to mid evening.  Multiple small bow echoes produced sporadic wind damage in north central and northeast Alabama, while a few supercell storms in northwest Alabama produced wall clouds and locally heavy rainfall.  In northern Madison County, 2 to 5 inches of rain fell in a very isolated location resulting in brief flash flooding.

Thunderstorm Wind in LIMESTONE, ALABAMA
From 02-SEP-12 14:45:00 to 02-SEP-12 14:46:00 (CST-6)
Location: ELKMONT
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few power lines and branches two to three inches in diameter were downed by thunderstorm winds near Elkmont.

Thunderstorm Wind in LAWRENCE, ALABAMA
From 02-SEP-12 15:25:00 to 02-SEP-12 15:26:00 (CST-6)
Location: TOWN CREEK
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few trees were downed by thunderstorm winds near the Doublehead resort, just northwest of Town Creek.

Thunderstorm Wind in LAWRENCE, ALABAMA
From 02-SEP-12 16:15:00 to 02-SEP-12 16:16:00 (CST-6)
Location: MOULTON
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree was blown down by thunderstorm winds on Main street, just east of Moulton.

Flash Flood in MADISON, ALABAMA
From 02-SEP-12 16:40:00 to 02-SEP-12 18:30:00 (CST-6)
Location: HUNTSVILLE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Flash flooding was reported at the Carmike movie theater complex, about three miles northwest of Huntsville. Several theaters on the property had a few inches of water in them.

Thunderstorm Wind in DEKALB, ALABAMA
From 02-SEP-12 17:55:00 to 02-SEP-12 17:56:00 (CST-6)
Location: GERALDINE
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was downed by thunderstorm winds onto County road 36, near Geraldine.

Thunderstorm Wind in LAWRENCE, ALABAMA
From 02-SEP-12 17:15:00 to 02-SEP-12 17:16:00 (CST-6)
Location: MOULTON
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few trees were downed by thunderstorm winds onto highway 33 in Bankhead National Forest, about 12 miles south of Moulton.

Thunderstorm Wind in MORGAN, ALABAMA
From 02-SEP-12 16:03:00 to 02-SEP-12 16:04:00 (CST-6)
Location: DECATUR
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was downed by thunderstorm winds just north of Decatur.

Flash Flood in MADISON, ALABAMA
From 02-SEP-12 16:18:00 to 02-SEP-12 17:30:00 (CST-6)
Location: HARVEST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Four to six inches of flowing water was reported across Wall Triana highway, along and north of Nick Davis road in Huntsville.

Thunderstorm Wind in DEKALB, ALABAMA
From 02-SEP-12 16:10:00 to 02-SEP-12 16:11:00 (CST-6)
Location: HAMMONDVILLE
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was downed by thunderstorm winds at the intersection of County road 236 and County road 101, near Hammondville.

Heavy Rain in MADISON, ALABAMA
From 02-SEP-12 16:30:00 to 02-SEP-12 17:45:00 (CST-6)
Location: HARVEST
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heavy rain occurred, as 4.25 inches of rain was measured in one hour and fifteen minutes in Huntsville.

Lightning in MADISON, ALABAMA
From 02-SEP-12 16:36:00 to 02-SEP-12 16:36:00 (CST-6)
Location: HUNTSVILLE
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lightning struck a home and produced minor to moderate damage to it as it caught on fire in Huntsville.

Thunderstorm Wind in LAUDERDALE, ALABAMA
From 02-SEP-12 14:09:00 to 02-SEP-12 14:09:00 (CST-6)
Location: KILLEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wind gust was estimated at 60 mph near U.S. highway 72 and County road 31, just southeast of Killen.

Thunderstorm Wind in LIMESTONE, ALABAMA
From 02-SEP-12 14:15:00 to 02-SEP-12 14:16:00 (CST-6)
Location: GOOD SPGS
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few trees and power lines were blown down by thunderstorm winds, near Good Springs.

Thunderstorm Wind in LIMESTONE, ALABAMA
From 02-SEP-12 14:34:00 to 02-SEP-12 14:35:00 (CST-6)
Location: ATHENS
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few trees were downed by thunderstorm winds across Baker hill road near the intersection of Elk River Mills road, about 9 miles north-northwest of Athens.

Thunderstorm Wind in COLBERT, ALABAMA
From 02-SEP-12 14:40:00 to 02-SEP-12 14:41:00 (CST-6)
Location: CHEROKEE
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was downed by thunderstorm winds on Barnes lane and Old Lee highway, near Cherokee.

Thunderstorm Wind in LIMESTONE, ALABAMA
From 02-SEP-12 14:43:00 to 02-SEP-12 14:44:00 (CST-6)
Location: ELKMONT
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few trees and power lines were downed by thunderstorm winds near the intersection of Easter Ferry road and Myers road, about five miles south-southwest of Elkmont.

Thunderstorm Wind in COLBERT, ALABAMA
From 02-SEP-12 14:25:00 to 02-SEP-12 14:26:00 (CST-6)
Location: CHEROKEE
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down by thunderstorm winds near Muscle Shoals.

Lightning in COLBERT, ALABAMA
From 02-SEP-12 14:50:00 to 02-SEP-12 14:50:00 (CST-6)
Location: MUSCLE SHOALS
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lightning struck a house just southwest of Muscle Shoals and produced minor damage.

Thunderstorm Wind in LIMESTONE, ALABAMA
From 02-SEP-12 15:05:00 to 02-SEP-12 15:09:00 (CST-6)
Location: ATHENS
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few power lines were downed by thunderstorm winds at Piney Chapel road and Elkton road, about five miles north-northeast of Athens.

Thunderstorm Wind in LIMESTONE, ALABAMA
From 02-SEP-12 14:55:00 to 02-SEP-12 14:57:00 (CST-6)
Location: ATHENS
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few trees and power lines were downed by thunderstorm winds, just northwest of Athens.

Thunderstorm Wind in MADISON, ALABAMA
From 02-SEP-12 16:28:00 to 02-SEP-12 16:30:00 (CST-6)
Location: HUNTSVILLE
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few power lines were downed by thunderstorm winds just southwest of Huntsville.

Thunderstorm Wind in FRANKLIN, ALABAMA
From 02-SEP-12 15:42:00 to 02-SEP-12 15:45:00 (CST-6)
Location: RUSSELLVILLE
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few trees were downed by thunderstorm winds on Fairview road near Atwood.

Thunderstorm Wind in MADISON, ALABAMA
From 02-SEP-12 16:25:00 to 02-SEP-12 16:28:00 (CST-6)
Location: HUNTSVILLE
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A couple of power poles were blown down by thunderstorm winds in Huntsville.

Thunderstorm Wind in MADISON, ALABAMA
From 02-SEP-12 16:36:00 to 02-SEP-12 16:38:00 (CST-6)
Location: OWENS XRDS
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was blown down by thunderstorm winds just northwest of Owens Crossroads.

Thunderstorm Wind in CULLMAN, ALABAMA
From 02-SEP-12 17:56:00 to 02-SEP-12 17:59:00 (CST-6)
Location: FAIRVIEW
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few power lines were downed by thunderstorm winds just northeast of Cullman.

Thunderstorm Wind in CULLMAN, ALABAMA
From 02-SEP-12 20:48:00 to 02-SEP-12 20:49:00 (CST-6)
Location: WALTER
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tree was downed by thunderstorm winds onto County Road 649 near County Road 648, near the town of Walter.

Flash Flood in MADISON, ALABAMA
From 02-SEP-12 16:20:00 to 02-SEP-12 18:10:00 (CST-6)
Location: HARVEST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A portion of Ford Chapel Hill road, just south of Harvest, was closed due to flash flooding, as several inches of water was over the road.

Flash Flood in MADISON, ALABAMA
From 02-SEP-12 16:22:00 to 02-SEP-12 18:15:00 (CST-6)
Location: HARVEST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding occurred, as a portion of North Day Hill road, just southeast of Harvest, was closed due to several inches of water over the road.