The severe storms that killed three people and caused travel delays in the southern U.S. on Tuesday are now headed for the Northeast. 600 fights were canceled across the country on Tuesday, in addition to more than 6,000 delays. As of Wednesday morning, over 370 flights had already been canceled. An outbreak of tornadoes on Christmas Day left damage across the Deep South and over 100,000 customers were left without power in Texas, Arkansas, Oklahoma, Mississippi, Louisiana, and Alabama. But the storms have moved on. The National Weather Service has issued storm and blizzard warnings from Oklahoma and Texas all the way up to Maine. Ron Agnir/Journal Newspaper, via AP; Sam Craft/The Paris News, via AP; Ben Noey Jr./Fort Worth Star-Telegram/MCT, via Getty; Marvin Gentry/Reuters, via Landov A family makes a snowman as the snowstorm blows through Martinsburg, West Virginia. Ron Agnir/Journal Newspaper, via AP Drivers navigate icy roads in Paris, Texas on Tuesday after the storm left inches of rain and snow on much of North East Texas. Sam Craft/The Paris News, via AP Tommy and Cindy Huddleston finish a snowman in Paris, Texas. Sam Craft/The Paris News, via AP Lucas Martinez and his dad, Nick Martinez, go sledding at Trinity Park in Fort Worth, Texas. Ben Noey Jr./Fort Worth Star-Telegram/MCT, via Getty A street littered with debris after a tornado hit the Midtown area of Mobile, Alabama. Twisters on Tuesday left damage across the Deep South. G.M. Andrews/AP Damage along Dauphin Street in Mobile after a tornado hit around 5 p.m. on Tuesday. Marvin Gentry/Reuters, via Landov