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December 29, 2021 · Chilton, Shelby County · 2021
EF1

December 29, 2021

10:01 PM
Chilton, Shelby County, Alabama · Near Calera (ZIP 35040)
Fatalities
0
Injuries
0
Path Length
10.9 mi
Max Width
400 yd
DateDecember 29, 2021
Time10:01 PM
CountyChiltonShelby
CityCalera
Property Loss$0
Crop Loss$0
SourceNCEI 995904
NWS Birmingham

.5 SW Minooka Park - 6 N Jumbo National Weather Service meteorologists surveyed damage in northern Chilton County and determined that it was consistent with an EF 1 tornado, with maximum winds near 110 mph. The tornado touched down just west of County Road 33, a few miles south of the Chilton and Shelby County line. Before crossing County Road 33, the tornado uprooted and snapped several trees and at least four structures were damaged. The tornado traveled east over Highway 31 and produced significant tree damage when it reached County Road 800. The tornado continued east northeast over I-65 and then over mostly rural northern Chilton County where it uprooted and snapped numerous trees. The tornado crossed into Shelby County near Wilderness Trail. This tornado crossed from Chilton County into Shelby County near Wilderness Trail and tracked southeast for several miles before dissipating near Highway 145. Damage consisted of uprooted trees. Start: 33.0444/-86.7754 End: 33.0492/-86.5879

NWS EF Scale: F1

Event Narrative

National Weather Service meteorologists surveyed damage in northern Chilton County and determined that it was consistent with an EF1 tornado, with maximum winds near 110 mph. The tornado touched down just west of County Road 33, a few miles south of the Chilton and Shelby County line. Before crossing County Road 33, the tornado uprooted and snapped several trees and at least four structures were damaged. The tornado traveled east over Highway 31 and produced significant tree damage when it reached County Road 800. The tornado continued east northeast over I-65 and then over mostly rural northern Chilton County where it uprooted and snapped numerous trees. The tornado crossed into Shelby County near Wilderness Trail.

Episode Narrative

A line of storms with embedded supercells developed south of an outflow boundary ahead of a slow-moving cold front, producing damaging winds and several tornadoes across the northern portions of central Alabama during the evening hours on December 29th. The surface boundary shifted into the southern counties of central Alabama on December 30th. The low level shear was not favorable for tornadoes, but the storms were robust enough to produce damaging winds and large hail.

Outbreak Context

Part of 4-tornado outbreak on December 29, 2021

Shared Episode Narrative

A line of storms with embedded supercells developed south of an outflow boundary ahead of a slow-moving cold front, producing damaging winds and several tornadoes across the northern portions of central Alabama during the evening hours on December 29th. The surface boundary shifted into the southern counties of central Alabama on December 30th. The low level shear was not favorable for tornadoes, but the storms were robust enough to produce damaging winds and large hail.

Source Data
NCEI Event ID: 995904

See Also

10.9 mi400 yd wide