Issued 209 PM EST Sun Jan 20 2019 Valid Mon Jan 21 2019 - Wed Jan 23 2019 ...Major winter storm will begin to wind down over the Northeast... ...Heavy snow possible over parts of Northern Maine, Sierras, Great Basin, and Northern/Central Rockies... ...Temperatures will be 10 to 20 degrees below average over parts of the Great Lakes, Ohio Valley, and into parts of the Northeast/Mid-Atlantic... A major winter storm will slowly wind down as the storm over the Gulf of Maine moves...