Winter Storm Cato Forecast: Nor'easter Snarling East Coast Travel With Heavy Snow, Rain

Thanksgiving Day: The last of the snow will wind down in the morning over parts of Maine. In the wake of the storm, highs will be below average across the Northeast. But they should climb far enough above freezing to allow rapid improvement in road conditions.

http://www.weather.com/storms/winter/news/winter-storm-cato-thanksgiving-travel-east-coast-2014

Snowfall amounts and impacts: The inset map at right shows our latest 48-hour snowfall forecast. Confidence in exact amounts is lowest along the Interstate 95 corridor, and somewhat higher to the north and west. Bear in mind the amounts shown are in addition to any snow that has already fallen.

For more snowfall maps with specific highways labeled, along with information on travel impacts, click here for our Winter Storm Cato news and impacts article.
Total snowfall isn't the only thing to consider, however. Temperatures will be close to the 32-degree mark for most of the affected area, so this will be a heavy, wet snow. This could lead to broken tree limbs and power outages in areas where the snow is heaviest.
But it could also mean less impact on drivers where amounts are lighter, where roads may just be slushy or wet. Bear in mind that temperatures were in the 70s on Monday in parts of the Northeast, so ground temperatures are not very cold.
The rate of snowfall is also important. Some areas, especially closest to the rain/snow line, could see snowfall rates of 1 inch per hour or more, especially where thunder accompanies the snow. Road conditions can deteriorate very quickly in snows of that intensity, as the snow can fall faster than road crews can clear it with plows. Even where the soil is warm, heavy rates of snowfall can allow snow to accumulate much faster than the ground can melt it.
Stay with The Weather Channel and weather.com for updates on this high-impact storm system.