This severe weather threat has come to an end. The heaviest rain as of 2am is now in Georgia.
Timing For Strongest Storms
A potent weather system will pass through the region leading to thunderstorms forming Wednesday night in the Tennessee Valley.
Storms will move into northwest Alabama by 7 p.m. Storms are then expected to move east through our region during the overnight hours, exiting northeast Alabama by 4 a.m.
The Storm Prediction Center has highlighted almost half of the Tennessee Valley under an Enhanced Risk (level 3 out of 5). The remainder of the Tennessee Valley is under a Slight Risk (level 2 out of 5). We are still days away from this event, so any small change in the track or timing of this frontal passage could shift the severe weather threat.
The main threats with this line of showers and thunderstorms Wednesday night into Thursday morning will be damaging winds and very heavy rainfall. Rainfall amounts of 1 to 1.5 inches will be possible with isolated higher totals of 2 inches. While the wind shear is highest during the cold front passage, the CAPE, or storm energy, is mostly elevated. If a surface-based storm can develop in what little surface CAPE the models are showing, it’s possible a tornado forms because of the high shear. So the primary threats are damaging winds and heavy rainfall. The tornado threat is low but not zero.
Stay with the Weather Authority as we track these storms move into our area tonight.