March 17, 2021
11:32 AM| Date | March 17, 2021 |
| Time | 11:32 AM |
| County | Dallas |
| City | Selma |
| Property Loss | $0 |
| Crop Loss | $0 |
| Source | NCEI 945099 |
1 E - 2 ENE Central Mills The tornado touched down near State Road 66 and east of County Road 109. At this spot, only some large branches were snapped off. The tornado continued northeast through pastureland where additional minor tree damage was observed. The tornado lifted just north of County Road 109 where a large softwood tree was uprooted. The tornado damage path was 1.07 miles long and was 75 yards wide. The maximum winds were estimated around 65 mph. Start: 32.2850/-87.4280 End: 32.2940/-86.4160
NWS EF Scale: F0
National Weather Service meteorologists surveyed damage in southwest Dallas County and determined that it was consistent with an EF0 tornado, with maximum winds near 65 mph. The tornado touched down near State Road 66, just east of County Road 109. At this location, a few large branches were snapped off. The tornado tracked northeast through pastureland where additional minor tree damage was observed. The tornado lifted just north of County Road 109 where a large softwood tree was uprooted.
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.