According to BMX, the boundary between Greenville and Montgomery that was left from the morning MCS is supposed to dissipate after noon allowing the warm front to move north. The lastest satellite imagery seems to show that process has begun.
The wall of how far north it will be able to go is also very evident on visible satellite as well as radar. My question is, has the insolation over parts of northern and central AL/MS created a weakness that will tug the precip train a little further north allowing the warm front to progress slightly further north? Nothing drastic it seems but with such a sharp gradient and the potential for the boundary to be focus of the worst of the day's storms that few miles could be critical in terms of the population that will be affected by today's storms.
I know it isn't much but the current radar loop seems show the band of precip being about 20-25 miles further north than was predicted on the HRRR a couple of hours ago and it seems each successive batch of rain crossing the MS/AL line is a tad further north than the previous batch.