Damaging non-thunderstorm winds, likely caused by what is known in meteorological terms a gravity wave, occurred in two main swaths in north central and northeast Alabama.  Sustained winds of 30 to 40 mph were observed, with gusts around 50 mph.  The sustained winds and gusts downed numerous trees onto power lines resulting in multiple power outages.  Lawn furniture and Christmas ornaments were thrown about, and a couple of outbuilding roofs were also torn off.  In a couple of cases, telephone and power poles were snapped.  One swath of damage tracked from southern Lawrence County through northern Morgan and southern Madison counties, including the southern portion of Huntsville.  Another widespread swath of damaging winds tracked through Cullman into southern Marshall and DeKalb counties.

Strong Wind in COLBERT, ALABAMA
From 20-DEC-07 14:05:00 to 20-DEC-07 14:05:00 (CST-6)
Magnitude: 43.00 ES
Property damage: 1000.00K
Reported by: Emergency Manager

Strong winds around 45 mph affected Lawrence County downing numerous trees, particularly in the Speake community.

Strong Wind in MORGAN, ALABAMA
From 21-DEC-07 14:30:00 to 21-DEC-07 14:40:00 (CST-6)
Magnitude: 43.00 ES
Property damage: 1000.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Strong winds knocked down severeal trees across much of Morgan county.  Particularly hard hit were the Hartselle, Decatur, and Somerville communities.  A roof was blown off an outbuilding at 822 Bluff City Road aprroximately 2 miles north of Somerville at 2:40 pm. Also, a roof was blown off a business at 304 2nd Avenue SE in Decatur.  Most winds were sustained around 40 mph, with estimated gusts around 50 mph at times.

Strong Wind in MADISON, ALABAMA
From 20-DEC-07 15:00:00 to 20-DEC-07 15:10:00 (CST-6)
Magnitude: 39.00 ES
Property damage: 1000.00K
Reported by: Broadcast Media

Strong winds sustained around 40 mph with gusts to around 50 mph, knocked down several trees and powerlines across the county.  Locations particularly hard hit included: Moutain Gap Road 7 miles SSE of Huntsville, the intersection of Rock Cut Road and U.S. Highway 72 in Gurley, and other locations in eastern Madison county.

Strong Wind in CULLMAN, ALABAMA
From 20-DEC-07 15:10:00 to 20-DEC-07 15:10:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 1000.00K
Reported by: Law Enforcement

Strong winds down trees across roads in many locations across Cullman county.  Cities reporting downed trees included:  Crane Hill, Loretta, Bremen, Garden City, Battleground, Fairview, and Gold Ridge.

Strong Wind in MARSHALL, ALABAMA
From 20-DEC-07 16:00:00 to 20-DEC-07 16:10:00 (CST-6)
Magnitude: 43.00 EG
Property damage: 1000.00K
Reported by: Emergency Manager

Strong winds sustained around 45 mph with gusts around 50 mph knocked down or snapped power poles causing massive power outages countywide. Locations hardest hit included: Douglas, Horton, and Lake Guntersville. Some of the stronger wind damage occurred to the Old Horton Grocery store at 410 pm, when the canopy was blown off the building.

Strong Wind in DEKALB, ALABAMA
From 20-DEC-07 16:35:00 to 20-DEC-07 16:35:00 (CST-6)
Magnitude: 43.00 EG
Property damage: 1000.00K
Reported by: Emergency Manager

Strong winds knocked down trees and powerlines across the county.  Particularly hard hit were Collinsville and Geraldine.  The strongest wind damage occurred in the Geraldine area, where a metal carport was moved onto county road 23.