Large Hail, Tornado and Wind Events of March 26-28th, 2011


During the early afternoon hours of Saturday, March 26th, a quasi-stationary surface boundary that had drooped into northern Alabama in the morning hours, finally set up across northern portions of the Birmingham CWA. This boundary would be the triggering mechanism for many storms during the afternoon and overnight hours on the 26th. As the atmosphere warmed that afternoon, multiple supercell thunderstorms developed across the area. One in particular traveled across portions of Bibb and Shelby Counties, and as the storm approached Montevallo in southern Shelby County, an impressive wall cloud developed. Though there was sporadic wind damage from this storm, and it was concluded that a brief EF-1 tornado touched down just north of town. There was also straight line wind damage in Autauga County. In addition to the wind damage, numerous thunderstorms dropped hailstones that ranged from pea to golf ball sized. A few hail stones were measured at 3.5 inches in diameter in Tallapoosa County. Pictures of the funnel cloud in Montevallo and the hail stones can be found below. Hail producing thunderstorms continued into the afternoon of March 27th and the early morning hours of March 28th across all of central Alabama.

 

surface analysis
Surface Analysis at 1 pm on March 26th, 2011

surface analysis
Surface Analysis at 7 pm on March 26th, 2011

 

surface analysis
Surface Analysis at 1 am on March 27th, 2011

surface analysis
Surface Analysis at 7 am on March 27th, 2011

 

storm reports
Storm Reports from March 26th, 2011

storm reports
Storm Reports from March 27th, 2011

 

Montevallo EF-1 Tornado (Shelby)
March 26, 2011

EF-1
Estimated Maximum Wind:
90 mph
Injuries/Fatalities:
None
Damage Path Length:
0.2 miles
Maximum Path Width:
50 yards
Approximate Start Point/Time:
1.9 NW Aldrich
33.1223/-86.9194 410 pm
Approximate End Point/Time:
1.8 NNW Aldrich
33.1223/-86.9161 411 pm
National Weather Service Meteorologist surveyed damage locations in southern Shelby County near Montevallo. It has been determined that the damage was produced by a brief tornado. The damage was consistent with winds around 90 mph. The tornado touched down near the intersection of County Road 10 and Homeland Way in the Aldrich Community. This location is approximately 3 miles northwest of Montevallo. Ten to twenty trees were either snapped off or were uprooted along the short damage path. One quarter of an outbuildings roof was peeled back and tossed 50 yards. The tornado damage path was 0.2 miles long and was 50 yards wide at its widest point.

View Montevallo EF1 March 26 2011 in a larger map
 
 
 

Hail Stones

Funnel cloud in Shelby county

Hail stones collected in Elmore County on March 26th. 

Funnel cloud from the supercell storm in Shelby County. 

   

Truck Damage

Mobile Home Damaged

 Tree destroys a truck in Autauga County

Mobile home destroyed in Autauga County

Hail

Hail

2+ Inch Hail in Tallapoosa County 3/26

Funnel Cloud near Co Rd 99 Shelby Alabama 3/26

Hail

Hail

Large Hail Drift near Jasper 3/26

Large Hail near Jasper 3/26

Hail

Hail

Funnel Cloud near Lay Lake 3/26

Funnel Cloud near Calera 3/26

   
If you have any pictures from this event you would like to share with us, please email them to sr-bmx.pix@noaa.gov.  Images can be submitted in any format, but please try to keep the file sizes below 500 Kb.  Please include a date and location the image was taken, and a brief description. Although not every detail is needed, be as specific as you can. For proper credit for the image, also include your name and location. 

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