Published: Nov 27, 2013 1:12 PM EST
Updated: Nov 27, 2013 3:47 PM EST

NEW YORK- The messy weather that is creating problems for holiday travelers is also threatening a Thanksgiving tradition. Severe winds are expected in New York tomorrow morning.

And as WINK News reporter Jason Carroll explains, that could leave Snoopy, Spongebob and all the other iconic Macy's parade balloons grounded.

Macy's Thanksgiving Day Parade's giant balloons may or may not fly.

Parade organizers aren't concerned about rain or snow...it's wind.

Giant balloons, like the all new "Toothless" from "How to Train Your Dragon," measuring 72 feet long and 36 feet wide, could be grounded. Sustained winds could reach at least 23 miles per hour Thursday and wind gusts could top 34 miles per hour.

Macy's says, "Regarding the giant balloons. A determination is made on their inclusion based on real-time weather data parade morning and not forecasts, so its not helpful to discuss it now."

Both city and parade officials have learned from past wind-related balloon accidents. In 1997, a woman spent more than three weeks in a coma after the "Cat in the Hat" balloon struck a light pole, which hit her. In 2005, two more were hurt in a similar accident involving the M&M's balloon.

Now, improved weather monitoring devices are along the parade route. And a police sergeant assigned to each balloon.