Trio of storms snarling holiday travel across the country

In Central California, several vehicles were involved in a chain-reaction crash as winds gusting above 30 mph blew dust across the roadway.
2:54 | 11/26/19

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Transcript for Trio of storms snarling holiday travel across the country
But we begin with those back-to-back storms that could cause real travel problems across the country, just as millions travel for the holiday. A storm moving across the west right now before heading straight across the country. And you can see this tractor trailer jackknifing in Washington state. It comes after a nor'easter moved up the east coast. Snow and sleet. Pictures from Columbia county, Pennsylvania, there. With that moving off, there's a lot more coming behind it. Warnings and watches in 25 states as we come on tonight, from California to Michigan. A major threat here in the east by Wednesday. And on Thanksgiving day, real concern over strong winds here in New York City. Will the famous balloons be grounded for the parade? We time it out for you. ABC's Clayton Sandell leading us off from Denver. Reporter: Tonight, the first taste of a storm bearing down on the west that forecasters are calling historic and unprecedented. Part of a pair of storms already snarling holiday travel across the country. In central California, 30-mile-per-hour winds kicking up dust, cutting visibility and likely triggering this chain reaction crash. Snow making roads a mess in Washington and Utah. The storm now headed to Colorado. This is going to be a big snow maker, our biggest snowstorm of the season so far. Reporter: Denver's airport is expecting nearly 200 thousand flyers tomorrow. A record 31.6 million passengers nationwide are expected to fly over the holiday. And Thanksgiving may deliver a bitter dish. The Macy's parade balloons may be grounded for the first time since 1971, thanks to high winds. And David, this storm is really expected to kick in overnight. 425 flights are already canceled for tomorrow and the morning commute could be a real mess for some of the 50 million people expected to hit these roads over the holiday. David? Take it very slowly all week long. Clayton, thank you. And let's get right to chief meteorologist ginger zee, who is timing it all. And you have your work cut out for you this week. Reporter: It's a big one, David. We've got wind alerts from California to New York and so many different winter storm warnings, advisories and watches in between. All the way through the Texas panhandle. Let's focus on storm number one. That would be the one impacting Denver right now. If you had plans to travel interstate 70 tonight through early tomorrow, I'm going to ask you to go ahead and delay that. It is going to be horrible. Visibility less than a quarter gusts up to 35. Then that heavy snow moves boo the northern plains and you've got severe storms tomorrow afternoon from St. Louis down to Mississippi. That then moves Minneapolis, Green Bay, all could see impacts in the way of snow and eventually that makes wind here in the northeast, but that's when Tuesday night into Wednesday, we get the next big one and the one that could make history, especially northern California, along the state line into southwest Oregon. Gusts up to 80 miles per hour. One to three feet of snow. And talking about that one moving across the nation, as well. We could see gusts here in new York City, closer to 40 and that would, indeed, ground those balloons at the parade. We'll be watching it, David. We'll take it one day at a time.

This transcript has been automatically generated and may not be 100% accurate.

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