More than 4 million people across five states were under winter storm alerts on Sunday as heavy lake-effect snow continued to bury the Great Lakes region, prompting emergency declarations and the deployment of National Guard troops to rescue stranded motorists.

The lake-effect snowstorm has disrupted holiday travel across the region. Some areas could get up to six feet of snow by Tuesday.

Lake-effect snow hit Western New York on Friday and has continued throughout the weekend, prompting multiple counties to be placed under a state of emergency and lake-effect snow warning. Gov. Kathy Hochul announced the state of emergency on Friday for Erie,