Issued 242 PM EST Sat Jan 19 2019 Valid Sun Jan 20 2019 - Tue Jan 22 2019 ...Major winter storm expected to move rapidly across the Ohio/Tennessee Valleys into the Northeast producing heavy snow, heavy rain, and rain/freezing rain... ...Severe weather and flash flooding are possible in the Central/Eastern Gulf Coast... ...Heavy rain possible for parts of Northern California, with heavy snow possible over the Sierras and parts of the Northern Rockies... ...Heavy lake effect sn...