From Spann.
MUCH COLDER THURSDAY: After a windy, wet night, temperatures will fall into the 30s Thursday, and we are forecasting some light snow, light sleet, and the potential for snow showers in the cold air over parts of Alabama, mainly east of I-65 and north of I-20.
The current forecast is for no meaningful accumulation or impact, although grassy areas could become white across the northeast corner of the state, especially across higher terrain.
But, in any winter weather situation it is always best to avoid a deterministic forecast (a forecast that does not include expression of the associated uncertainty). We like to present a range of possibilities, and the attached maps do that. You can see the most likely case (as described above), along with a "boom" and "bust" forecast. These are not expected, but are a possibility.
The "bust" scenario is basically no snow at all. On the other hand, the "boom" forecast is for two inches of snow over the northeast corner of the state, 1 inch around Gadsden, and a quarter of an inch for Birmingham.
I will have a new Weather Xtreme video and discussion posted early tomorrow morning as we have some time to look at new data. One way or another, it will be COLD Thursday and Friday across Alabama!