We are looking at another winter threat for northern Alabama beginning Friday morning. For the Tennessee Valley region of north Alabama, the threat for winter weather has prompted the NWS in Huntsville to issue winter weather advisories.
Light snow or sleet will begin about mid-morning in northwest Alabama. The area of frozen precipitation will move east and continue to produce snow, sleet and freezing rain into Friday night.
The Winter Weather Advisory covers Lauderdale, Colbert, Franklin, Lawrence, Limestone, Morgan, Marshall & Cullman counties from 6 am Friday until midnight.
Accumulations of 1/2 inch of snow and sleet are possible. The snow and sleet will change over to freezing rain before changing over to rain as temperatures warm Friday night. There could be some light accumulations of ice of around .10 of an inch.
The conditions may become more serious for extreme northeast Alabama. As a result a Winter Storm Warning has been issued for Madison, Jackson and DeKalb counties from noon Friday until 9 am Saturday.
The colder air will hang in these areas a bit longer and as a result…the precipitation…especially freezing rain will continue for a longer period of time. The freezing rain is expected to change over to rain Saturday morning.
Accumulations around a half an inch of snow or sleet… and greater than a quarter of an inch of ice are possible.
For areas south of the Tennessee Valley, there are no advisories at this time. However, there will be a decent chance of seeing some mixed precipitation fall in these areas.
Folks that live or travel across Blount, Cherokee, Etowah, Marion and Winston should be especially alert in the event that more widespread mixed precipitation falls in these areas.
Remember that the roads are cold, and it won’t take much precipitation to make the roads a real mess. If you are involved in any travel across the northern third of Alabama, be sure and check the latest conditions and forecasts.
Finally, this forecast could change as the frozen precipitation line could more more north or south as the event develops. We will be updating the blog and follow me on Twitter at http://twitter.com/alaweather