Transcript for Christmas Storms: What Travelers Need to Know
Now, to the storms brewing at this hour. Just as millions of Americans travel for Christmas, the howling wind. This from Wyoming. Listen to this. Lovely scene there. Blustery weather hitting. And this is I-70 in Colorado. Grid lock stretching for miles and circled there on the right, that's a man on skis. He'll get home for the holidays faster than anyone in those cars. And look at the map tonight. Winter weather warnings across the heartland. A big storm building strength in the east. The new track in a moment. But first, ABC's rob Marciano with the new images coming in tonight. Reporter: For the more than 98 million of us hitting the roads and the skies for the holiday, the first full day of winter is in full force. Blizzard warnings for the rocky mountains. These motorists were making their way to California for the holidays. Just perfect example of how horrible these conditions can be. Reporter: And watch this traffic camera in I-70 in Colorado. On your right, you can see the only way to get around was on skis. The mountains hammered with over two feet of snow. And allhat snow causing avalanches. In California, more mudslides closing down part of a highway. This is a significant amount of Earth. Reporter: Stretch rouse travel in the upper midwest, too. Frozen roads in Wisconsin and de-icing planes in Minneapolis. All this, a day after at least seven people were injured in a lightning strike just outside this Tampa football stadium. It just took you to your knees. Let's get right to rob. That part of the country, severe weather through the next 24 hours. Reporter: Another storm brewing in the gulf coast tonight. We've got a severe weather threat from New Orleans along I-10 through mobile, Alabama. Does include Tampa and Atlanta. Damaging winds, some isolated tornadoes. That same storm system on Wednesday will drive up the east coast, with a lot of rain and a lot of wind. This is going to slow down travel. Look at Chicago, though. Maybe a little bit of snow there for a white Christmas. That means maybe some delays. A yellow plane there. Atlanta and New York, probably significant delays on Christmas eve because of the wind and the rain. We'll keep following it. Rob Marciano, thank you.
This transcript has been automatically generated and may not be 100% accurate.