There is a high ceiling for how much snow the storm could generate, but it could also just produce a glancing blow or even head out to sea with little impact.

Winter storm warnings extended from Kentucky to southern New Jersey, and a flood watch was posted for a wide swath of Kentucky, Tennessee, southwest Virginia and northern Georgia. The snow-and-ice mix was expected to become all rain as temperatures climb by Wednesday afternoon.

Snow and ice will impact millions across the nation's northern tier this weekend as the latest in a string of winter storms tracks across the country. The system has been named Winter Storm Jett by The Weather Channel. The latest radar shown below shows where snow is falling from Winter Storm Jett from the West to the Midwest and Northeast.