Several clusters of thunderstorms developed during peak afternoon heating across north Alabama.  These formed in an environment favorable for downbursts capable of damaging winds.  Small hail was also reported.
Several of the thunderstorms produced intense downpours in a short period of time, including 1-2 inches in less than an hour.  This resulted in short-term flash flooding in the north side of Huntsville just north of downtown. In this area, up to two feet of flood water closed a heavily traveled street in north Huntsville, while several others experienced short term flooding of 3-6 inches depth.

Flash Flood in MADISON, ALABAMA
From 10-SEP-19 15:30:00 to 10-SEP-19 20:30:00 (CST-6)
Location: NORMAL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two feet of water reported at Washington Street and Max Luther Drive. The road has been closed. Other reports of more minor flooding ongoing in North Huntsville at this time.

Thunderstorm Wind in LAWRENCE, ALABAMA
From 10-SEP-19 14:00:00 to 10-SEP-19 14:00:00 (CST-6)
Location: MT MORIAH
Magnitude: 52.00 EG
Reported by: Emergency Manager

Thunderstorm winds damaged a roof to a barn and houses in the area along CR 309. Time estimated by radar.

Thunderstorm Wind in DEKALB, ALABAMA
From 10-SEP-19 14:55:00 to 10-SEP-19 14:55:00 (CST-6)
Location: BEATY XRDS
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Bradford pear trees were knocked down near the intersection of CR 134 at CR 712.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:25:00 to 10-SEP-19 15:25:00 (CST-6)
Location: CHASE
Magnitude: 52.00 EG
Reported by: Emergency Manager

Numerous trees and power lines were knocked down in north Huntsville, including the Moores Mill area.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:26:00 to 10-SEP-19 15:26:00 (CST-6)
Location: HUNTSVILLE PARK
Magnitude: 52.00 EG
Reported by: Broadcast Media

Trees were knocked down at the 4400 block of Millvale Drive. Time estimated by radar.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:26:00 to 10-SEP-19 15:26:00 (CST-6)
Location: NORMAL
Magnitude: 43.00 EG
Property damage: 0.20K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was knocked down on Normandale Road. Time estimated by radar.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:29:00 to 10-SEP-19 15:29:00 (CST-6)
Location: NORMAL
Magnitude: 52.00 EG
Reported by: Emergency Manager

Trees were knocked down along Blue Spring Road at Winchester Road. Time estimated by radar.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:29:00 to 10-SEP-19 15:29:00 (CST-6)
Location: MOORES MILL
Magnitude: 52.00 EG
Reported by: Broadcast Media

A power line was snapped on Helena Drive NW with transformers hanging off the ground.

Thunderstorm Wind in COLBERT, ALABAMA
From 10-SEP-19 15:45:00 to 10-SEP-19 15:45:00 (CST-6)
Location: CHEROKEE
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree and power line was knocked down in Cherokee.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:26:00 to 10-SEP-19 15:26:00 (CST-6)
Location: HUNTSVILLE PARK
Magnitude: 52.00 EG
Reported by: Broadcast Media

A large tree was knocked down onto an apartment building causing severe damage on Hood Road.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:37:00 to 10-SEP-19 15:37:00 (CST-6)
Location: NORMAL
Magnitude: 52.00 EG
Reported by: Broadcast Media

A large tree was knocked down onto a car and carport on Lakeview Drive. Time estimated by radar.

Thunderstorm Wind in LAWRENCE, ALABAMA
From 10-SEP-19 14:00:00 to 10-SEP-19 14:00:00 (CST-6)
Location: CHALYBEATE SPGS
Magnitude: 52.00 EG
Reported by: Public

Thunderstorm winds produced severe roof damage to a building in the Mount Hope area. Time estimated by radar.

Thunderstorm Wind in MADISON, ALABAMA
From 10-SEP-19 15:26:00 to 10-SEP-19 15:26:00 (CST-6)
Location: HUNTSVILLE PARK
Magnitude: 52.00 EG
Reported by: Emergency Manager

Trees and power lines were knocked down on Baywood Drive and Johnson Drive. Time estimated by radar.