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April 15, 2011 · Autauga County · 2011
EF1

April 15, 2011

7:48 PM
Autauga County, Alabama · Near Prattville (ZIP 36080)
Fatalities
0
Injuries
0
Path Length
7.9 mi
Max Width
200 yd
DateApril 15, 2011
Time7:48 PM
CountyAutauga
CityPrattville
Property Loss$440000.00M
Crop Loss$0
SourceNCEI 310539
NWS Birmingham

1 NW Poseys Crossroads - 2.9 SSE Pine Flats Winds were estimated around 150 mph. The tornado touched down just east of the Old Kingston Community near the intersection of County Road 40 and County Road 63. This tornado was the third tornado to affect this same general area during the evening hours. The tornado tracked east-northeast and passed north of Poseys Crossroad and entered Boones Chapel. The tornado then crossed Interstate 65 and lifted along County Road 85 north of the Stoney Point Community. Hundreds of trees were snapped off or were uprooted. At least 50 homes and one business were significantly damaged or were destroyed. Three occupants of a manufactured home were killed and 4 others were seriously injured. Start: 32.5803/-86.5818 End: 32.6126/-86.4269

NWS EF Scale: F3

Event Narrative

A tornado touched down approximately 2 miles southeast of Independence along County Road 13. The tornado moved northeast where it snapped or uprooted several trees. As the tornado moved into the Old Kingston community, it strengthened to and EF-1 rating, with maximum winds of 90 mph, and removed the steeple from a church. A mobile home also sustained significant damage. The tornado lifted 2 miles north of Old Kingston near County Roads 161 and 150.

Episode Narrative

A potent storm system, which wreaked havoc across the eastern half of the United States on April 14-16, produced a significant and historic tornado outbreak across Central Alabama on April 15. Forty tornadoes, 30 of which touched down in Central Alabama, occurred in the state. At the time, this set a new record for number of tornadoes within the state from one event. This record was broken on April 27, 2011. ||A surface low developed across the Central Plains on Thursday, April 14, and strengthened as it moved into the mid-Mississippi River Valley. In response, surface dew points in the middle to upper 60s surged northward into Central Alabama and deep vertical wind shear increased, providing support for tornadic supercell development. A weakening line of thunderstorms moved into northwest Central Alabama early Friday morning. The southern end of this line intensified by mid day as it encountered a more unstable airmass. South of the line, supercells formed in Mississippi and tracked eastward into west Central Alabama. The entire system pushed east across the area over the course of about twelve hours, exiting east Central Alabama in the early morning hours on Saturday, April 16. In addition to the thirty tornadoes, the storm system produced widespread straight line wind damage and numerous large hail reports.

Outbreak Context

Part of 43-tornado outbreak on April 15, 2011

EF1Clarke CountyView →EF0Choctaw CountyView →EF0Choctaw CountyView →EF1Choctaw, Marengo CountyView →EF2Washington CountyView →EF2Sumter CountyView →EF1Monroe CountyView →EF3Greene, Tuscaloosa CountyView →EF2Hale CountyView →EF2Sumter CountyView →EF1Bibb CountyView →EF2Sumter, Greene CountyView →EF2Greene, Hale CountyView →EF0Shelby CountyView →EF3Marengo County1 fatalView →EF2Monroe CountyView →EF2Marengo CountyView →EF2Monroe, Butler CountyView →EF2Marengo CountyView →EF1Shelby CountyView →EF0Perry CountyView →EF2Choctaw, Marengo CountyView →EF2Perry CountyView →EF1Dallas CountyView →EF0Lowndes CountyView →EF1Dallas CountyView →EF1Dallas CountyView →EF1Autauga CountyView →EF0Autauga CountyView →EF2Clarke CountyView →EF1Dallas CountyView →EF0Elmore CountyView →EF1Autauga CountyView →EF2Autauga CountyView →EF0Mobile CountyView →EF2Monroe CountyView →EF3Autauga County3 fatalView →EF2Butler CountyView →EF2Elmore, Coosa, Tallapoosa CountyView →EF1Escambia CountyView →EF1Tallapoosa CountyView →EF2Escambia, Conecuh, Covington CountyView →
Shared Episode Narrative

A potent storm system, which wreaked havoc across the eastern half of the United States on April 14-16, produced a significant and historic tornado outbreak across Central Alabama on April 15. Forty tornadoes, 30 of which touched down in Central Alabama, occurred in the state. At the time, this set a new record for number of tornadoes within the state from one event. This record was broken on April 27, 2011. ||A surface low developed across the Central Plains on Thursday, April 14, and strengthened as it moved into the mid-Mississippi River Valley. In response, surface dew points in the middle to upper 60s surged northward into Central Alabama and deep vertical wind shear increased, providing support for tornadic supercell development. A weakening line of thunderstorms moved into northwest Central Alabama early Friday morning. The southern end of this line intensified by mid day as it encountered a more unstable airmass. South of the line, supercells formed in Mississippi and tracked eastward into west Central Alabama. The entire system pushed east across the area over the course of about twelve hours, exiting east Central Alabama in the early morning hours on Saturday, April 16. In addition to the thirty tornadoes, the storm system produced widespread straight line wind damage and numerous large hail reports.

Source Data
NCEI Event ID: 310539

See Also

7.9 mi200 yd wide