A strong storm system moving into California as of Thursday evening will track eastward through the Southern states over the weekend. With a cold setup in place for the eastern two-thirds of the nation, this storm will cause snow and ice for many people north of the storm track, including the southern Plains, along and north of I-40 through the middle Mississippi Valley and in the Carolinas and Virginia. A lot of moisture will get pulled north out of the tropics into the Southeast, setting the stage for potentially historic snowfall over the southern Appalachians. Areas that don't see the snow and ice are in for a soaking rain. There will also be a risk for severe storms south of the track of the low; this includes parts of Texas, along the Gulf Coast and into Florida, perhaps southern Georgia. Behind the storm, chilly air will hold on over the Southeast, leading to slow snowmelt in areas the see a lot of it and this could keep some folks snowed in for a while. Later next week, we will warm up some and another storm looks to bring a soaking rain and thunderstorms. Flooding could be an issue where there is heavy rain on top of snowmelt.

We should resolve some of the uncertainty in the forecast by Friday afternoon when the storm gets fully over North America and we have better surface and upper air data to put into the computer models.