We are in for one hell of an ending to January in the eastern half of the country with unending ARCTIC COLD and SIGNIFICANT WINTER PRECIPITATION across most of this area. It's going to stay VERY COLD after the event too, which makes melting and recovery much more difficult when significant ICE and SNOW fall. There are many details within the ECMWF model below, but I wanted to show you a "rough draft" of this storm. The timeline of the event looks to be Friday afternoon into Tuesday from the southern Plains to the Mid Atlantic. The ECMWF wants to put the northeast into a snowstorm before this ends on Tuesday. Some of the data I have looked at this morning is downright scary with respect to ICE ACCRETION. Hopefully a lot of this falls as SLEET, but some of the FREEZING RAIN COULD BE OVER AN INCH which is crippling. Double digit SNOW is likely as well especially in the mid-Atlantic region. Significant snowfall is expected in DC. ICE is possible to the southeast coast. I've included the @weatherbell NBM liquid equivalent total as this is the pie from which we slice. How this plays out in precip types is still up for discussion, but this has the potential to disrupt life as we know it for many areas for several days during and after the event.