Issued 256 PM EST Sun Dec 16 2018 Valid Mon Dec 17 2018 - Wed Dec 19 2018 ...Heavy snow possible over the Northern Cascades and Northern Intermountain Region... ...Heavy snow and rain/freezing rain over parts of New England... ...Heavy rain possible over the Pacific Northwest Coast... A storm along the Northern Mid-Atlantic Coast will move northeastward to the Canadian Maritimes by Tuesday. The system will produce rain and snow with pockets of rain/freezing rain over parts o...