By Jim Stefkovich, Meteorologist, Alabama Emergency Management Agency
CLANTON – 3:30 pm November 30, 2018
Severe weather is possible across all of Alabama on Saturday, especially near and south of I-20. This includes the potential for supercell thunderstorms and tornadoes. The graphic above shows the timing of when severe weather is anticipated.
As with many late fall/early winter events, this is still not a clear-cut scenario. A band of convection near the coast early Saturday morning will move northeastward. Widespread rain/thunderstorms will also be occurring north of a Demopolis – Montgomery – Auburn line, but these are not anticipated as being severe.
Another band of thunderstorms could develop during the late morning into late afternoon and move across Alabama, with these storms potentially becoming severe.
Negative factors for a widespread severe event include morning convection disrupting afternoon thunderstorm formation, and afternoon upper level features beginning to move out of the area. However, there is still the possibility that this could change, which would lead to both a higher threat area and lasting well into the afternoon.
Listen for updates this evening and early Saturday and be prepared to receive both severe weather watches and warnings if they are issued.
Finally, this system will produce around one inch of total rainfall over the northern 2/3 of the state, 1-3 inches over the southern 1/3, with higher amounts in stronger thunderstorms. This may lead to localized flash flooding, and a Flash Flood Watch is in effect for southeast Alabama.