First of all, I want to stress that this will be a long day and conditions will vary depending on your location; in other words, this is NOT "a one forecast fits all" kind of day. As of 7:00 this morning, precipitation is moving in from the west; the good news is, at least temporarily the air just off the surface is very warm and as the light rain, freezing rain, and sleet falls, some of the warm air is working down the surface. If you've noticed, temperatures warmed a couple degrees after the precip began. Jackson is slightly above freezing as of 7AM, but Vicksburg is at 32 degrees with freezing rain and sleet.
In the short term, (through mid-morning), the focus will be icing due to freezing rain and sleet; the greatest potential for widespread icing should remain along and northwest of the Natchez Trace Parkway. By late morning and early afternoon, a cold upper level low will move in from our west; as it moves across the state, precipitation will change to all snow north of I-20, and a wintry mix between I-20 to potentially as far south as Highway 84. The greatest accumulation will occur over the northern half of Mississippi, but these systems have a tendency to deliver some surprises, which is why this is a situation we'll have to take hour by hour. For now, our accumulation forecast from yesterday still looks good, so we'll roll with it and make necessary changes as the day unfolds...
We'll keep you posted throughout the day, on air and online.