Overview:
A potent storm system will be moving eastward from out of Texas and to Oklahoma during the day on Wednesday, with very moist and unstable conditions developing across much of the Southeast. Widespread showers and storms are expected to develop across Central Alabama starting during the day on Wednesday and lasting through Wednesday night. Torrential downpours are possible as an almost tropical air mass moves northward from the Gulf of Mexico, which will lead to significant flooding concerns.
Uncertainties currently exist in terms of where the heaviest rainfall will set up across the area, as we could have more than one corridor of heavy rainfall that develops. The potential for severe storms will also exist with plenty of wind shear and instability available.
Changes from previous forecast:
A Moderate risk of flash flooding was introduced across much of Central Alabama, and the Slight Risk for severe storms was expanded to the north and east.
Highlights:
A Flood Potential:
Where:
* All of Central Alabama
When:
* Wednesday afternoon through Wednesday Night
Threats:
* Rainfall amounts of 3 to 6 inches are likely with isolated higher amounts
* Potential for significant flooding and flash flooding where heaviest rainfall occurs
Severe Potential:
Where:
* All of Central Alabama, greatest chance across western and southwestern counties
When:
* Wednesday afternoon through Wednesday Night
Threats:
* Damaging winds up to 60mph
* A tornado or two cannot be ruled out