A long-lived quasi-linear convective system moved into northwest Alabama between 6 and 9 AM, and gradually tracked east across the remainder of north Alabama through the midday and early afternoon hours.  In advance of the line, strong southerly winds of 30 to 40 mph with gusts over 45 mph were reported.  In some cases, trees and power lines were knocked down with these non-thunderstorm winds.  The line of thunderstorms yielded numerous reports of thunderstorm wind damage, including trees and power lines being knocked down, along with some structural damage.  A few weather stations measured wind gusts of 58 mph or higher as well.  Storm surveys revealed 3 separate tornadoes: 1 EF0 and 1 EF1 in Cullman County,  and 1 EF2 in Marshall County.  Intense rainfall in a short period of time resulted in a few reports of brief flash flooding in northwest Alabama.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 14:00:00 to 11-JAN-20 14:00:00 (CST-6)
Location: SECTION
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms winds damaged the Section Highs School score board.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 13:48:00 to 11-JAN-20 13:48:00 (CST-6)
Location: SECTION
Magnitude: 43.00 EG
Property damage: 0.20K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was knocked down at this location. Time estimated by radar.

Thunderstorm Wind in MARSHALL, ALABAMA
From 11-JAN-20 13:24:00 to 11-JAN-20 13:24:00 (CST-6)
Location: LAKEVIEW
Magnitude: 78.00 EG
Reported by: NWS Storm Survey

Thunderstorm winds bent and snapped at least 15 wooden power poles along Highway 227 along the causeway east of downtown Guntersville. Time estimated by radar.

Thunderstorm Wind in MADISON, ALABAMA
From 11-JAN-20 13:10:00 to 11-JAN-20 13:10:00 (CST-6)
Location: MADISON CO JET PORT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Measured at the Huntsville International Airport.

Thunderstorm Wind in MARSHALL, ALABAMA
From 11-JAN-20 13:44:00 to 11-JAN-20 13:44:00 (CST-6)
Location: ALBERTVILLE MUNI ARP
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Measured at the Albertville Regional Airport.

Thunderstorm Wind in CULLMAN, ALABAMA
From 11-JAN-20 13:05:00 to 11-JAN-20 13:05:00 (CST-6)
Location: FAIRVIEW
Magnitude: 52.00 EG
Reported by: Public

Structures damaged near CR 1691.

Thunderstorm Wind in MADISON, ALABAMA
From 11-JAN-20 13:12:00 to 11-JAN-20 13:12:00 (CST-6)
Location: MADISON
Magnitude: 56.00 EG
Reported by: NWS Employee

A large wooden power pole was partially snapped at it's base and leaned over requiring replacement. The event occurred just north of Old Madison Pike along Hughes Road. Time estimated.

Thunderstorm Wind in CULLMAN, ALABAMA
From 11-JAN-20 13:24:00 to 11-JAN-20 13:24:00 (CST-6)
Location: HOLLY POND
Magnitude: 52.00 EG
Reported by: Broadcast Media

Damage to awning and roof at the high school at this location. Time estimated by radar.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 13:46:00 to 11-JAN-20 13:46:00 (CST-6)
Location: SECTION
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines were knocked down along Davistown Road.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 13:45:00 to 11-JAN-20 13:45:00 (CST-6)
Location: LANGSTON
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Damage was reported to a storage building/shed on CR 152 near Bucks Pocket.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 13:46:00 to 11-JAN-20 13:46:00 (CST-6)
Location: PLEASANT HILL
Magnitude: 52.00 EG
Reported by: Law Enforcement

A tree was knocked down and a roof was blown off a house along CR 144.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 13:49:00 to 11-JAN-20 13:49:00 (CST-6)
Location: DAVISTOWN
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Damage was done to a structure on CR 66 and CR 43.

Thunderstorm Wind in LAUDERDALE, ALABAMA
From 11-JAN-20 07:50:00 to 11-JAN-20 07:50:00 (CST-6)
Location: WATERLOO
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was knocked down along CR 45 with live wires across the road.

Thunderstorm Wind in COLBERT, ALABAMA
From 11-JAN-20 08:50:00 to 11-JAN-20 08:50:00 (CST-6)
Location: SHEFFIELD
Magnitude: 52.00 EG
Reported by: Emergency Manager

Trees were knocked down onto a row of telephone poles, pushing them down to the ground.

Thunderstorm Wind in LAWRENCE, ALABAMA
From 11-JAN-20 12:05:00 to 11-JAN-20 12:05:00 (CST-6)
Location: LEOLA
Magnitude: 52.00 EG
Reported by: Public

Trees were knocked down on Alabama Highway 33 at CR 9 in the Bankhead National Forest.

Tornado in CULLMAN, ALABAMA
From 11-JAN-20 13:13:00 to 11-JAN-20 13:14:00 (CST-6)
Location: JOPPA
Tornado F-scale: EF1
Reported by: NWS Storm Survey

The tornado caused damage to structures, and numerous trees were snapped or uprooted along Highway 69, landing on a few homes.  Tornado damage was rated up to EF-1 in the city of Joppa, with wind speeds of 100 mph. Trees were snapped and
uprooted along Highway 69, causing minor structural damage.

Tornado in MARSHALL, ALABAMA
From 11-JAN-20 13:14:00 to 11-JAN-20 13:15:00 (CST-6)
Location: ARAB
Tornado F-scale: EF0
Reported by: NWS Storm Survey

The tornado continued rapidly moving north east into Marshall County along Highway 69. The tornado lifted in Hog Jaw in Marshall County at a farm across from the Westside veterinary Hospital where the roof of an outbuilding was taken off.

Thunderstorm Wind in MORGAN, ALABAMA
From 11-JAN-20 12:34:00 to 11-JAN-20 12:34:00 (CST-6)
Location: OAKWORTH
Magnitude: 52.00 EG
Reported by: Public

Trees and power poles were knocked down at Miller Street SW and Cockrell Avenue SW in Decatur.

Thunderstorm Wind in MORGAN, ALABAMA
From 11-JAN-20 12:42:00 to 11-JAN-20 12:42:00 (CST-6)
Location: OAK RIDGE
Magnitude: 61.00 EG
Reported by: Emergency Manager

A roof was blown off of the Liberty Baptist Church on Lane Road.

Thunderstorm Wind in MORGAN, ALABAMA
From 11-JAN-20 12:50:00 to 11-JAN-20 12:50:00 (CST-6)
Location: BROOKSVILLE
Magnitude: 52.00 EG
Reported by: Emergency Manager

A storage building was blown off its foundation at this location.

Tornado in MARSHALL, ALABAMA
From 11-JAN-20 13:19:00 to 11-JAN-20 13:24:00 (CST-6)
Location: UNION GROVE
Tornado F-scale: EF2
Reported by: NWS Storm Survey

The tornado initially touched down just south west of Brindlee Mountain Primary School. At this location, the school gymnasium, 10 classrooms, and the cafeteria were destroyed. Numerous beams in the roof of the gym were also twisted and bent, and large bolts used to attach it to the foundation were ripped from the structure. EF2 tornado damage was determined at this location, with wind speeds 120 mph. In addition to damage to the school, several trees were snapped or uprooted at this location near the ballfield. A set of bleachers was hurled over 150 yards from one side of the school to the other. Several dumpsters were displaced as well, along with three or four power poles snapped at their
bases. This lead to additional damage at the school property when the poles fell on the school awning and roof. Little to no additional tornado damage was noted to the northeast of the school, aside from roofing materials strewn from the damage at the primary school itself. The tornado ended as it crossed Union Grove Road west of the Union Grove Fire Station.

Thunderstorm Wind in CULLMAN, ALABAMA
From 11-JAN-20 12:52:00 to 11-JAN-20 12:52:00 (CST-6)
Location: BOLTE
Magnitude: 52.00 EG
Reported by: Trained Spotter

Several trees were knocked down, some on top of homes at the intersection of Bolte Road and CR 702.

Thunderstorm Wind in MADISON, ALABAMA
From 11-JAN-20 12:59:00 to 11-JAN-20 12:59:00 (CST-6)
Location: NEBO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree was knocked down onto an ambulance, injuring 3 occupants.  The injuries were thankfully minor.  The event occurred on Balch Road just north of U.S. Highway 72.

Thunderstorm Wind in MORGAN, ALABAMA
From 11-JAN-20 12:52:00 to 11-JAN-20 12:52:00 (CST-6)
Location: BROOKSVILLE
Magnitude: 52.00 EG
Reported by: Emergency Manager

A storage building was damage and siding was damaged at a home along Tabscott Road.

Thunderstorm Wind in CULLMAN, ALABAMA
From 11-JAN-20 13:10:00 to 11-JAN-20 13:10:00 (CST-6)
Location: JOPPA
Magnitude: 52.00 EG
Reported by: Public

Numerous reports of damage along Highway 69 near Joppa.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 13:49:00 to 11-JAN-20 13:49:00 (CST-6)
Location: PLEASANT HILL
Magnitude: 52.00 EG
Reported by: Emergency Manager

Power lines were knocked down on Highway 79 near Goose Pond Drive.

Thunderstorm Wind in JACKSON, ALABAMA
From 11-JAN-20 14:00:00 to 11-JAN-20 14:00:00 (CST-6)
Location: CENTRAL
Magnitude: 43.00 EG
Property damage: 0.20K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was knocked down at the intersection of CR 151 and CR 88. Time estimated by radar.

Thunderstorm Wind in DEKALB, ALABAMA
From 11-JAN-20 14:02:00 to 11-JAN-20 14:02:00 (CST-6)
Location: SYLVANIA
Magnitude: 52.00 EG
Reported by: Emergency Manager

A building was damaged at Buttram Crossroads near Sylvania.

Tornado in CULLMAN, ALABAMA
From 11-JAN-20 13:03:00 to 11-JAN-20 13:08:00 (CST-6)
Location: HOLLY POND
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A tornado touched down in the Holly Pond community near the center of town. The tornado caused minimal tree and roof damage as it quickly moved through the city. Minor roof damage was caused to the old WaterBrook restaurant, also blowing off siding at this location, and wrapping it around a cell phone tower northeast of the restaurant. From there, the tornado skipped northeast, causing minimal roof damage to the southwest corner of Holly Pond High School, where less than 20% of the roof was damaged, and portions of the awning were also damaged.

Thunderstorm Wind in DEKALB, ALABAMA
From 11-JAN-20 14:10:00 to 11-JAN-20 14:10:00 (CST-6)
Location: BEATY XRDS
Magnitude: 43.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds produced minor non-specified damage to a mobile home.