The combination of a cold front and an associated upper level short wave moving through the region, resulted in two tornadoes and isolated wind damage across portions of north Alabama.

Thunderstorm Wind in CULLMAN, ALABAMA
From 11-APR-13 14:30:00 to 11-APR-13 14:31:00 (CST-6)
Location: CRANE HILL
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: County Official

A tree was downed by thunderstorm winds on County Road 351, about one mile south of Crane Hill, Alabama.

Tornado in MADISON, ALABAMA
From 11-APR-13 15:20:00 to 11-APR-13 15:28:00 (CST-6)
Location: FARLEY
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down on the southeast area of Redstone Arsenal near the intersection of Redstone Road Southwest and Patton Road Southwest. Damage was seen just northeast of this location as several small to medium-sized trees were snapped along Magazine road. About a half mile northeast, off Sandpiper road, minor structural damage occurred to a medium-sized metal building system with two portions of a west facing wall blown out. Debris from the walls and small portions of the roof were thrown to the northwest, perpendicular to the storm motion and track.  Several pine trees were snapped and uprooted in this area as well. The tornado continued its track northeast toward the eastern edge of the Arsenal perimeter, where several larger trees were snapped and uprooted.  The tornado continued its track northeast and connected with the damage beginning around Craigmont road.
The tornado continued to track toward the west side of Memorial Parkway (Highway 231), in the 9000 block of Craigmont drive. In this area, several large trees were snapped or uprooted with at least one falling onto the back of a house.  The tornado moved northeast, crossing Highway 231, with several trees snapped along Oldfield road. Extensive power line and power pole damage was also noted at the intersection of Whitesburg Drive and Lily Flagg road. Several wooden poles were snapped near the base and a street light was snapped at the base as well. Several  business signs were blown out in the area. The tornado was likely at its strongest point in this area, reaching EF-1 intensity.
The tornado then moved across several residential neighborhoods, snapping and uprooting both soft and hardwood trees. Minor damage to roofs, mainly from falling trees, was also noted. A large tree fell on a house on Valley View drive, causing major damage to the home. The tornado crossed Hickory Hill road, snapping trees and eventually causing minor tree damage in the Valley Hill Country Club area. The tonrado finally lifted near Haven Street, just west of Bailey Cove road.

Thunderstorm Wind in CULLMAN, ALABAMA
From 11-APR-13 14:30:00 to 11-APR-13 14:32:00 (CST-6)
Location: JONES CHAPEL
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: County Official

A few trees were downed by thunderstorm winds on County Road 1051 near Jones Chapel, Alabama.

Tornado in MADISON, ALABAMA
From 11-APR-13 15:32:00 to 11-APR-13 15:34:00 (CST-6)
Location: DUG HILL
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

The same storm that spawned the Lily Flagg area tornado previously in Madison County, Alabama, caused an additional short-lived tornado that touched down along Dug Hill road near the Cheval Boulevard (Cheval neighborhood). At this location, several hardwood trees were uprooted and several power poles were snapped. In addition, large cedar trees and other smaller softwood trees were snapped and twisted further down Dug Hill road. Further east-northeast, a large swath of cedar trees and other hardwood trees were snapped or uprooted, with several snapped off near the base, which was consistent with EF-1 damage.  A roof was also ripped off a barn on the east side of Dug Hill road.  The tornado then lifted just north of Raintree road in Madison County, Alabama.