March 17, 2021
4:12 PM| Date | March 17, 2021 |
| Time | 4:12 PM |
| County | Chilton |
| City | Maplesville |
| Property Loss | $0 |
| Crop Loss | $0 |
| Source | NCEI 944813 |
2 WNW Billingsley - 1 ENE Pools Crossroads A tornado touched down in an inaccessible area near Little Mulberry Creek northwest of Billingsley. It continued north-northwestward, uprooting a couple tree along County Road 361. The tornado intensified as it crossed County Road 37 near the intersection with County Road 24. Near this intersection, an unanchored home was shifted off of its foundation and a large anchored building was destroyed. In addition, a doublewide manufactured home was completely destroyed with debris blown downstream, some exterior walls of a brick residence were collapsed, and outbuildings were damaged. The occupants of the manufactured home reported getting the warning and taking shelter with additional family in a storm shelter minutes before the storm hit. The resident of the brick structure also reported receiving the warning and taking cover in an interior closet with a friend. Both were uninjured. Also near this intersection, another residence suffered roof damage, two vehicles were moved 15 feet, and multiple trees were uprooted. The tornado continued northeastward through a wooded area, snapping numerous trees before dissipating as it crossed County Road 16 just east of Pools Crossroads. The tornado damage path was 5.84 miles long and was 400 yards at its widest point. The maximum winds were estimated at 130 mph. Start: 32.6746/-86.7364 End: 32.7544/-86.7028
NWS EF Scale: F2
National Weather Service meteorologists surveyed damage in eastern Chilton County and determined that it was consistent with an EF1 tornado, with maximum winds near 95 mph. A tornado touched down near County Road 484 and tracked north-northeast producing mainly tree damage along County Roads 491 and 97. Hardwood trees were snapped and uprooted along County Roads 486 and 491. Some minor structural damage was also noted with damage to farm buildings and an outbuilding. The tornado widened to about 500 yards in this area. As the tornado continued northeast towards County Road 28, it began to weaken with more minor tree damage noted. The tornado dissipated quickly just north of County Road 28.
An active southern jet stream set-up across the southern United States during the middle of March. Several short-wave troughs became negatively tilted as each one traversed across Texas and towards Alabama. This resulted in a single hail event one Monday, March 15, and significant tornado outbreak on Wednesday, March 17. Many supercells began to develop across Central Alabama by midday Wednesday and continued into the evening hours before a squall line moved through the state. Sufficient instability and strong wind shear produced conditions favorable for tornadoes to develop. The event consisted of twenty-one tornadoes in the NWS Birmingham forecast area.
Part of 21-tornado outbreak on March 17, 2021
An active southern jet stream set-up across the southern United States during the middle of March. Several short-wave troughs became negatively tilted as each one traversed across Texas and towards Alabama. This resulted in a single hail event one Monday, March 15, and significant tornado outbreak on Wednesday, March 17. Many supercells began to develop across Central Alabama by midday Wednesday and continued into the evening hours before a squall line moved through the state. Sufficient instability and strong wind shear produced conditions favorable for tornadoes to develop. The event consisted of twenty-one tornadoes in the NWS Birmingham forecast area.