Monday AM UPDATE:

Hitting the road shortly back to ACA, but wanted to update what we can expect weather-wise in ACA.  What's complicating the potential snow forecast is the timing of the cold air arrival with the last of the heavier rainfall overnight TONIGHT. Plenty of rain yet to come to ACA, but the updated model still has enough cold air to make Tuesday morning an issue.  Snow onset will be in the overnight hours, and should be going nicely by midnight. 

There is a kinda-sorta second part of this storm that will continue to keep snow in the forecast for the Tuesday evening and overnight hours.  Potentially more road issues, Tuesday evening through Wednesday morning.

NAM run for early this morning is holding tight to 2-5" around ACA.  The latest GFS run isn't done yet, but it's consistently been at 1" tops.  The NWS is talking of only light accumulations (1") above 4-5K feet at this time...but I also just now saw where winter storm watches are posted for the areas in MS and TN I wrote in the prior post.  Their NWS offices weren't discussing snow when the NAM was peppering them with lots of snow, so it may well be our 'light looking' forecast might lean a tad more towards the NAM later today. (click pic to enlarge)

NAM early Monday run

For now, I am going to stick with my up to 3" for the top of ACA, and 1" for the bottom of ACA for a storm total.  Road issues should develop before sunrise tomorrow, Tuesday.  My best guess, for now.

Bob